Graduation thesis of railway safety management 20 17

Safety is the eternal theme of railway transportation, the guarantee of reform and development, the lifeline of enterprise survival and development, and an important prerequisite for railway to do all the work well. The following is the content of 20 17 graduation thesis on railway safety management that I collected for you. Welcome to read the reference!

20 17 graduation thesis on railway safety management 1

Discussion on safety management of traction power supply for high-speed railway

Abstract: The safety management of traction power supply for high-speed rail is a complex systematic work, which plays an irreplaceable role in ensuring the safe operation of high-speed rail. Therefore, it is very necessary to strengthen the research on it. The related aspects of traction power supply safety management of high-speed railway are analyzed, which lays a safe foundation for the stable development of traction power supply safety technology of high-speed railway.

Keywords: high-speed railway; Traction power supply; safety management

1, analysis of load characteristics and safety management characteristics of traction power supply system of high-speed railway

1. 1, load characteristics of high-speed rail traction power supply system

The load characteristics of high-speed rail traction power supply system are very different from those of ordinary railways:

(1) The load fluctuates frequently. The load is related to the number of trains operated by the power supply arm, the slope of the line and the running speed of the trains. The load of traction substation of high-speed railway will fluctuate with the number of trains in two power supply arms and their load state at any time.

(2) The traction load is large. High-speed trains have the characteristics of high speed and high density during rush hours, and the air resistance will increase exponentially with the increase of speed. At this time, the traction of the train needs to overcome the air resistance, which makes the traction load bigger. The current of high-speed trains can reach 600 ~ 1000 A, while that of ordinary trains generally does not exceed 300A.

(3) High-speed trains often need to overcome air resistance during high-speed operation. In order to maintain high-speed train operation, it is necessary to continuously obtain electric energy from catenary, which makes the train's own load rate higher and the power receiving time longer.

(4) High power factor. The AC -DC- AC EMU is adopted, and the power factor is above 0.95.

1.2, safety management features

The characteristics of high-speed rail traction power supply safety management are mainly reflected in the following four aspects:

(1) dynamic. The traction power supply load of high-speed rail has obvious mobility and uncertainty, and the load is often in an unbalanced state, which makes various safety problems change dynamically. Once a traffic accident or power interruption occurs, it will inevitably cause huge economic losses and serious negative effects.

(2) Repeatability. Because all traction power supply equipment is set in the open air, the operation of the equipment is relatively greatly affected by temperature changes and climatic conditions, which makes seasonal safety problems occur frequently.

(3) complexity. The catenary of traction power supply system has obvious complexity, such as complex environment, changeable climate and no backup equipment.

(4) uniqueness. The impact load of traction power supply for high-speed rail is very frequent, the harmonic content is large, and the operating environment pollution is also serious, which puts forward higher requirements for the safety management of traction power supply. Therefore, effective measures must be taken to improve the safety management level of traction power supply, which is of great practical significance to ensure the safe, stable and reliable operation of high-speed rail.

2. Main safety problems faced by traction power supply system.

At present, the main problems faced by traction power supply system are: harmonics, negative sequence current, power factor, locomotive over-phase, grounding, relay protection, pantograph-catenary relationship, insulation coordination and electromagnetic compatibility.

1) harmonic current injected into power supply system will bring unfavorable factors to the reliability of communication system and control system, and reduce the operation efficiency of electrical equipment.

2) Negative sequence current will reduce the user's electric energy utilization rate, resulting in the user's rotor surface temperature rise is too high.

3) When the neutral section is cut off when the locomotive is electrified and split-phase, overvoltage will occur, and the overvoltage level can sometimes reach the value of breaking through the insulator of the contact wire, and the arc may burn out the catenary hanger; When the locomotive is powered on again, the over-current phenomenon appears, and the over-current level can reach 5~7 times of the normal running current of the locomotive, which may damage the normal life of the equipment and affect the correctness of relay protection.

4) The catenary system is a non-standby system, and the locomotive obtains electric energy through sliding connection between pantograph and catenary. During the locomotive movement, there are vibrations in different directions, which are transmitted to the catenary through the pantograph, and the catenary vibrates accordingly. The good relationship between pantograph and catenary is that the vibration characteristics of catenary and pantograph are consistent, and it is a follow-up system, which keeps the catenary and pantograph in good contact.

5) Insulation is required between the live part of high-voltage equipment, the equipment shell and the earth, and between high-voltage equipment with different voltage levels and phases. Insulation coordination means that in a power supply system, due to the existence of many insulation components, through the selection of insulation levels (power frequency withstand voltage and impact withstand voltage) of each component, the reasonable level of technical and economic indicators can be achieved on the premise of meeting the requirements of system insulation level. Insulation coordination is one of the important topics in electrified railway research in recent years. It is paid attention to because the application of grounding technical measures is difficult to achieve the expected results without considering the insulation cooperation in different environments.

3. Main factors affecting the safety of traction power supply system

The main factors affecting the safety and reliability of traction power supply system can be divided into equipment factors, power supply quality factors, external influencing factors, system operation factors and management factors. There are many small factors in every big factor. This paper mainly lists various influencing factors as follows, as shown in Table 1:

Table 1 Factors affecting traction power supply

4. Measures to strengthen the safety management of traction power supply

In modern society, high-speed railway has become an advanced, important and fast means of transportation, and it is very important to ensure the normal operation of traction power supply system.

4. 1. Strengthen the skills training of high-speed railway professionals and improve their safety skills.

In order to meet the safety requirements of traction power supply system of electrified high-speed rail, ensure the safe and effective operation of electrified high-speed rail and ensure the normal operation of traction power supply system, firstly, strengthen the training of full-time and part-time personnel for high-speed rail safety. Organize safety management training courses, carry out safety laws and regulations and safety management skills and knowledge training, and promote the safety management of traction power supply for high-speed railways. The second is to organize training courses for high-speed rail maintenance personnel, strengthen the study of safety management knowledge and improve safety technical ability; Organize high-speed rail technology business seminars regularly, analyze the problems existing in high-speed rail safety maintenance, and put forward ideas to solve the problems, so that the safety management experiences and lessons of each team can be shared and the purpose of * * * can be achieved. The third is to strengthen the high-speed rail safety awareness training for employees. Safety training should be combined with training base construction, and staff training should be combined with safety training. Incorporate safety training content into employee skill training courses, integrate training and assessment, and strictly implement the safety training access system.

4. 1. 1, strengthen process monitoring.

It is necessary to strengthen the supervision of staff management. We must correct problems in time to avoid making mistakes in the same thing in the future, which will lead to unnecessary losses. At the same time, it is necessary to strengthen the assessment, ensure that the staff are assessed regularly or irregularly, and ensure that the staff cannot neglect their work and demand themselves with strict norms and standards. When there is a problem, it is necessary to ensure the satisfactory solution of the problem, investigate the responsibility of the problem personnel, and improve the vigilance and rigor of the staff. This is an important means to ensure safety.

4. 1.2, enhance the awareness of innovation management.

In the aspect of personnel management, we should pay attention to constantly enhancing innovation consciousness, strengthening the standardization of management system, constantly updating management regulations, using new management methods to enhance team awareness, and also pay attention to improving management level and the safety and stability of electrified high-speed rail traction power supply system without increasing labor intensity, so as to improve the running quality of locomotives.

4.2, standardize and improve the fine management of ledger.

Standardize and improve the resumes of all kinds of equipment ledgers, sort out and refine the format and content of equipment ledgers, and update them in time to make the ledgers traceable and in place in time. For the change of equipment, it is necessary to clarify the process of updating the ledger and related responsibilities, and improve the management level of high-speed railway safety technical data.

4.3, improve the quality of traction power supply equipment

In order to realize the safety and reliability of electrified high-speed rail traction power supply system, it is necessary to continuously strengthen management by using advanced equipment and information means to ensure the safety of equipment. For example, in the management process of traction power supply system operated by high-speed rail, SCADA system (data acquisition and monitoring system) can be used to monitor and control the operating equipment on site, thus gradually improving the safety and reliability of facilities. In order to ensure the normal operation under unattended conditions, remote control video equipment can be used for management in the system, which can not only ensure the normal operation of machinery, but also effectively reduce the waste of human resources. At the same time, high-tech equipment such as resistance tester and infrared imaging can be used for monitoring, which is very important for improving the monitoring standard of facilities and ensuring the order and safety of operation.

4.3. 1 improvement? Skylight point? Equipment maintenance utilization rate

The maintenance of catenary equipment is mainly carried out by using the time when the train operation line is not laid or the train operation adjustment is reduced to the construction and maintenance of the business line. Establish an organization, strengthen leadership, and be responsible step by step. Skylight? Implement management measures with system constraints, strengthen skylight management, and carefully assess the redemption rate of skylights, so that the utilization rate of skylights can reach 100%. At the same time, strengthen equipment maintenance, check equipment maintenance, and improve the running quality of driving equipment.

Insulation cleaning

In order to ensure the normal operation of traction power supply equipment of high-speed railway in bad weather such as snow and fog, and prevent large-area insulator pollution flashover. According to the established account of high-speed rail heavily polluted areas, organize personnel to carry out insulation cleaning reasonably. According to the principle that porcelain insulators must be cleaned manually once, composite insulators are cleaned by small water washing machines and washing trains, and insulators missing from water washing operations are cleaned manually. First, manual power failure combined with charged water flushing is used to clean porcelain insulators. 2. Wash the composite insulator with small water or charged water after power failure. Insulators leaked by water washing operation should be supplemented by manual cleaning. Don't miss a piece, a stick, and leave no dead ends.

4.3.3 Temperature measurement of main circuit

According to the temperature measurement plan made by the equipment operation unit, combined with the actual operation situation of the equipment, the main circuit, connection points, internet access points, cable joint clamps and other places of the traction power supply equipment are detected by using the temperature measurement instrument, and compared with the measured ambient temperature and equipment temperature, so as to find out hidden dangers of the equipment in time, prevent equipment failures and ensure the safe operation of the traction power supply equipment.

4.3.4 Check the potential safety hazards, such as the compensation device and branch are stuck, the weight A value exceeds the standard, the conductor tension is too high, the electrical connection and separation conductors are too tight and too loose, the connection state of the Internet access points is poor, the distance between the additional conductors and the ground is insufficient, etc., and organize the equipment management unit to inspect the conductor galloping by means of patrol, online inspection and additional patrol.

4.3.5 According to the characteristics of high-speed railway equipment and seasonal weather changes, special inspections are carried out to prevent bird damage, repair dangerous trees, flood control, lightning protection, windproof, icicle prevention, cold protection, breakage prevention, abrasion resistance and cables, and the operation quality of high-speed railway equipment is comprehensively improved through special inspections.

4.5, prepare the accident emergency plan.

Due to the particularity of traction power supply system itself, all kinds of unexpected accidents happen from time to time. Therefore, it is necessary to formulate a scientific, reasonable and feasible safety emergency plan, which is the fundamental guarantee to deal with unexpected accidents. First, improve the emergency repair plan, carry out modular management of the emergency repair plan, and formulate specific safety response measures in various emergencies. The second is to formulate drill projects in a targeted manner, incorporate abnormal emergency response into normal management, and enhance the effectiveness of emergency response. Three, organize emergency drills on a regular basis, according to? One case at a time, one case at a time? Requirements, comprehensively improve the efficiency of emergency repair and shorten the time of emergency repair; Continuously improve the ability of emergency repair. Fourth, carry out regular inspection, maintenance and maintenance of emergency materials and tools for emergency repair to ensure that they are in good condition and reliable.

4.6, strengthen the overall management of catenary.

As OCS is a large-scale equipment and facility with customized engineering combination on site, whether its performance and safety and reliability can be fully exerted depends entirely on design, manufacture and on-site construction. Therefore, all aspects of construction and management should be well done to ensure the safety and stability of this facility.

In a word, traction power supply system is an important part of electrified railway, and it is very important to ensure its safety, which needs our attention. This paper analyzes the safety management of traction power supply for high-speed railway for reference.

refer to

[1] Cao Jianghua. On the safety management of traction power supply for high-speed railway [J]. West Railway Science and Technology, 2014,02:17-18.

Qi Guangfeng. Development and prospect of traction power supply safety technology for high-speed railway [J]. China Railway, 20 12,11:18-21.

William Wang. Study on safety management of traction power supply for high-speed electrified railway [D]. Southwest Jiaotong University, 20 1 1.

20 17 graduation thesis on railway safety management 2

Discussion on safety management of railway intermediate station

With the reform and development of the railway, the level of railway technology and equipment is improving day by day, and the train speed, running density and traction quality are constantly improving. Facing the new situation, new changes and new problems brought by the transformation of transportation organization in the new period, it shows that it is not suitable for the acceleration of reform and development, and safety management is facing many problems. Based on the new concept of safety risk management, this paper discusses how to solve the safety management problem of railway intermediate stations in the new period.

Intermediate station; Security; Risk; operate

Safety is the eternal theme of railway transportation, the guarantee of reform and development, the lifeline of enterprise survival and development, and an important prerequisite for railway to do all the work well. It is the important duty of every manager to actively explore the railway safety management under the new situation of high speed, heavy load and high speed. As the most basic group under the jurisdiction of railway operation stations, intermediate stations are an important link in railway transportation and play a very important role in ensuring safety, stability and smoothness. Some railway intermediate stations are remote, far away from institutions, with harsh environment, inconvenient transportation and difficult life, which brings great difficulties to the management of intermediate stations. Therefore, doing a good job in the safety management of intermediate stations is a topic that we need to focus on at present.

1. Problems in the management of intermediate stations

1. 1 Safety work lacks high standards.

High standard is the premise and foundation of doing a good job, which is not only the target requirement, but also the quality requirement; It is both a source requirement and a result requirement. Some intermediate stations failed to achieve the safety goal, and even lost the battle in safety, because the standard was not high, and they were satisfied with getting by, but not demanding too much, which made the safety work of this station wander at a low level, and many problems developed into chronic diseases, and similar accidents appeared repeatedly. The specific manifestations are as follows: First, the standard understanding is vague. Although we have repeatedly stressed the issue of standards in recent years, until now, some cadres and workers are very vague about operating standards, technical standards and equipment standards, and high standards have become a mantra. Second, the implementation of standards is not thorough enough. After years of whole chapter establishment, a set of safety management system standards has been formed from the railway bureau to the station, which has played an important role in ensuring transportation safety. However, in daily work, some intermediate stations lack the seriousness, consciousness and persistence of implementing system standards, and do not act according to standards, which leads to accidents.

1.2 personnel quality is not suitable.

In recent years, with the continuous advancement of railway system reform, new technologies and new equipment have been gradually put into use, and the training and education mechanism has failed to keep up, resulting in the overall quality of employees becoming more and more unsuitable for the requirements of safe transportation production under the new situation. First, some webmasters can't keep up with the new management rhythm, lack new management knowledge and new technical knowledge, and can't better guide the operation of each post in the station, resulting in uncontrollable key operations in the station. Second, some employees have not gained a firm foothold? Safety first? Weak ideology and safety awareness, weak sense of responsibility, and irregular operation behavior; The technical and professional level is poor, especially the knowledge of new technology is not well mastered, the emergency ability of abnormal operation is not strong, and habitual operation is common. The terminology of operating procedures is simplified, and illegal operations are used to it, which causes certain safety hazards to safety production.

1.3 Safety management is not suitable.

For a long time, influenced by traditional management, safety management still stays in the inherent management mode. Management is often extensive, static and passive, which can't keep pace with the times. Security risk management is basically superficial, with simple management methods, lack of foresight and unclear management ideas. Mainly manifested in: ① the management concept is backward, the active management is lagging behind, and we can't strictly grasp the thin tube. Some webmasters exist? Nothing is safe? One-sided understanding downplays the idea of putting prevention first and eliminating hidden dangers; (2) Some webmasters lack enterprising spirit, are serious in humanitarianism and formalism, have a floating style and a weak sense of responsibility, and turn a blind eye to employees' illegal operation and simplified operation procedures, so that employees have developed the habit of becoming standards in operation; (3) The stationmaster didn't perform well in one day's work, and didn't grasp the quality of the roll call before the shift and the succession meeting. Some even simplify the handover meeting and go deep into the inspection operation of each post, failing to grasp the main problems, resulting in superficial phenomena; (4) not paying attention to technical business training and learning, dealing with more, solving fewer practical problems, and basically becoming a mere formality; ⑤ The implementation of advanced prevention of potential safety hazards is weak, and the control of key operating procedures is weak.

1.4 Inadequate security risk management control

Some webmasters have unclear ideas and vague understanding of security risk management, lack scientific management methods, and only pay attention to results rather than process. First, the key work of the station, especially the key work in special periods and stages, cannot be checked in time and lacks the ability to judge in advance. The targeted control measures for the identified risk sources are not rigorous and meticulous, and lack of operability. Second, the key parts and links of various operations are not well controlled, and the rules and regulations and operating standards cannot be seriously implemented. The key points such as construction organization, receiving and dispatching trains under abnormal conditions, shunting operations, anti-skid of parked vehicles, and receiving and dispatching trains with special requirements cannot be strictly controlled according to regulations, and repeated inertia problems cannot be rectified, posing a serious threat to safety production.

2. Some suggestions to improve the station safety management and control ability.

Station safety management mainly refers to a series of implementation and supervision means to eliminate unsafe factors in the production process of the station and prevent personal injury and traffic accidents by taking various safety measures, strictly implementing rules and regulations and operating standards, observing labor discipline and operating discipline, and strengthening process operation control.

2. 1 Improve the quality of personnel and lay a solid foundation for safety.

Safety in production is a complex system engineering. To do this systematic project well, we must lay a solid foundation, which is the quality of personnel. Only by constantly improving the quality of personnel can we constantly adapt to the requirements of railway development and reliably ensure safe production.

2. 1. 1 The stationmaster of the intermediate station is not only the organizer of the safety management of the intermediate station, but also the commander and ordinary participant of the safety production activities. The safety work of the intermediate station is regular, massive and meticulous, which cannot be separated from the stationmaster. At the same time, under special circumstances, the webmaster must personally participate in and supervise the key operating procedures. The stationmaster's own quality has a decisive influence on the safety production management of the whole station. Therefore, it is very important to improve the comprehensive quality of intermediate station webmasters. Train depot should strengthen the training management of intermediate station stationmaster, attach importance to training reserve stationmaster, provide them with a platform for promotion, introduce competition mechanism when necessary, and select qualified intermediate station stationmaster; At the same time, webmasters can be organized to go out and come in, exchange and learn from each other, broaden their thinking, learn from each other's strengths, and effectively improve their management level and technical business level.

2. 1.2 With the continuous improvement of technical equipment level and the change of traffic organization, the requirements for the technical and professional quality of the main types of traffic personnel are getting higher and higher, and the requirements that are not suitable for railway safety transportation production under the new situation gradually appear. Therefore, we should vigorously carry out technical business training and create a strong learning atmosphere. According to the new technology, new equipment and new requirements, we should organize various training activities, pay attention to practical results, and select good technical experts and top students to achieve the goal of comprehensive improvement from point to area. Through the improvement of employees' comprehensive quality, standardized team management, excellent employees' business, safety and order, safety production has entered a benign cycle of development. 2.2 Strengthen infrastructure construction and team management.

To grasp enterprise management, we must first start from the foundation, but also from the team, so team management is the starting point and foothold of safety management. First, according to the management requirements of the intermediate station and the actual situation of the station, further improve, supplement and formulate various management methods, rules and regulations and assessment systems, focus on the revision and perfection of the details of the station, and gradually establish a rules and regulations system with the details of the station as the main body and various operation methods and measures as the extension, so as to be standardized, reasonable, focused, targeted and operable, and provide institutional guarantee for safe production. Second, the driving team leader is both a driving commander and a driving organizer. Therefore, the team leader should select employees who have a strong sense of responsibility, are skilled in technology, set an example, dare to grasp and manage, and can play a leading role in the organization in their work, so as to further improve the overall technical and business level of the team and the team leader's ability to lead the organization and command. Third, adhere to the activities of pre-judgment, mutual control in class and analysis and summary after class, so as to achieve targeted prevention in advance, mutual control of key processes in operation and rolling improvement after operation. The fourth is to implement the post operation standards, improve the standard operation level, and strengthen the degree of self-control, mutual control and joint control. Fifth, take the construction of self-control team as the starting point, strengthen the whole chapter establishment system, further standardize team management, implement the implementation measures of self-control team, cultivate a new force with excellent quality and consciously abide by rules and regulations, and lay a solid foundation for ensuring safe production. The sixth is to establish an incentive mechanism for production safety, implement the economic responsibility system for joint defense of safety, implement the responsibility system for personal protection and station protection, implement layer-by-layer protection, assign responsibilities at different levels, assess performance, reward the excellent and punish the poor, and fully mobilize the enthusiasm of all employees for production safety.

2.3 Strengthen the safety management and control of the operation process.

2.3. 1 Pay close attention to process control to ensure that all aspects of safety management are fully controlled.

The so-called whole process control of operation refers to the process that all relevant personnel involved in the operation clearly control the project, content, method and relevant responsible personnel through self-control, realize post control and program control, so that every link in the whole process of operation is in a controlled state, thus ensuring the safety and quality of operation. Therefore, strict standardized operation is also the control of operating procedures.

Process control should be based on? Give priority to prevention, grasp small amplification, nip in the bud, and prevent micro-duration? Change the concept of emphasizing the result as the process and the treatment as the prevention. Strictly enforced? Self-control, mutual control, joint control and monitoring? System, with self-control as the core, mutual control and joint control as the focus, and monitoring as the key, is the control center of safety management and a powerful guarantee for safety control.

2.3.2 Strengthen the safety risk management and control of key links.

In the process of railway transportation production, a link out of control may lead to traffic accidents, that is to say, control and out of control coexist, and safety and accidents coexist. Therefore, it is necessary to grasp the internal relationship between safety and accidents, and systematically analyze, investigate and judge them. It is necessary to conduct comprehensive investigation and judgment, comprehensively identify risk sources and risk points, and focus on personal safety and other risks, focusing on management risks, operational risks and equipment risks that may lead to accidents, according to the actual production safety and the characteristics of production organization, equipment facilities and personnel quality. First, strengthen the control of key operations. Security control should be strengthened for the weak parts and links in the station operation process. Such as construction organization, receiving and dispatching trains under abnormal conditions, shunting operation, anti-skid of parked vehicles and receiving and dispatching trains with special requirements. We need to focus on card control. Second, it is necessary to strengthen the prevention of potential safety hazards in advance, focusing on the prevention and control of signs, tendencies and regularity. At the same time, we should correct and implement inertia problems and tendentiousness problems, and try our best to solve difficult and key problems.

2.3.3 Establish the concept of safety management to ensure the sustainable, stable and healthy development of safety.

Safety in production is strict, but it is also wide. Strict and effective management is the premise of ensuring safe production. Safety management is a systematic project, involving all aspects. We must distinguish between primary and secondary, grasp the main contradictions, and be brave and good at management. Infiltrate the concept of scientific management into daily work, continue to deepen safety risk management, and follow? The problem is at the scene, and the reason is management? Train of thought, vigorously strengthen the management foundation, solve key and difficult problems, promote the strict implementation of various safety work, and ensure safety, order and controllability.

3. Concluding remarks

Under the new situation of railway reform and development, it is very important to do a good job in the safety management of intermediate stations. In the face of many practical difficulties in the intermediate station, we should further clarify the management ideas, take vigorously promoting safety risk management as a breakthrough, and strengthen risk investigation, judgment and control. By strengthening the management of safety sources, strengthening on-site operation control and strict safety inspection and supervision, targeted control measures are taken to ensure the healthy development of transportation safety in intermediate stations.

I guess you like it.

1. Railway Safety Management Paper

2. Railway construction safety papers

3. Railway transportation safety management papers

4. subway safety management thesis