On Power System Management Seminar

[Paper Keywords] relay fault handling computer Technology management oversight functions
[Abstract] relay device is an automatic device in the power system is mainly responsible for the safe and reliable power system operation, which is its main responsibility is the task, it can keep abreast of the power system running, while the timely detection of problems , by selecting the appropriate circuit breaker to cut off part of the problem. This combination of work experience, the management of power system protection analysis of frequently asked questions, personal recommendations and propose effective measures to ensure grid security and stability are discussed.


Introduction
When unforeseen circumstances, the protection device will automatically transmit the signal to inform the staff, the staff will be able to promptly deal with failure to solve the problem, restore the system's security operation at the same time, the device can also be coordinated with other equipment automatically eliminate transient faults, therefore, strengthen the power system relay protection management is a reliable guarantee for safe operation.

First, the importance of relay protection and task management
1 importance. Work as a network relay work an important part of their job duties and responsibilities, technical, heavy task. Relay staff face every day, such as network structure, protection configuration, equipment investment and retirement, changes in operation mode and fault conditions and other information, a correct analysis of them, processing and Statistics, work is very heavy, and between the upper and lower Council, between the Bureau and the plant stand, there are many repetitive data entry and maintenance work in order to reduce relay protection of staff strength, improve labor productivity, development of information management systems relay protection has become a necessary requirement for the development of grid.

2, the main task of power system relay protection management system's main task is to relay the data involved, graphics, forms, documents, etc. for input, query, modify, delete, browse Since managed object hierarchy and more complex structure involving almost all the secondary equipment parameters, operating status, statistical analysis, document management or personnel information and other transaction management, protection of the professional division of smaller layers, which makes the database, many different types of tables, the use of management system can greatly improve efficiency and accuracy of data used.

In the power system, there are imperfections, such as software design protection, the second circuit design is unreasonable, the parameters with the bad, poor quality components, equipment aging, secondary logo is not correct, not running counter-measures and many other reasons, resulting in running relay protection equipment there or failure, ranging from the impact equipment operation, while in endangering the grid security and stability, for which we must attach great importance to relay troubleshooting, serious and lasting relay the information to carry out good management.

Second, the lack of relay protection management
Looking at the current power system of the hair, the relay power supply management unit, will find the units relay protection management problems that exist in various forms, records vary, different recording format, fill in also very irregular; In addition, almost all units of vulnerability discovery and management process is often just take notes, there has not eliminated the failure to conduct a deeper analysis and research. More seriously, or even individual units without any record of failure, there management less often after only arrange resolved even if the bin because of all units on the management of different levels of attention, eventually leading to operation and maintenance effects are very different: some units fail, may once eradicated, equipment and basic network security firm; The same failure occurs, some units may not fully eliminate multiple handling, time-consuming and supplies, but also seriously affect the safety equipment and stable operation of power grid; even some failure occurs because of the professional team members are nervous, not immediately eliminated, coupled with the failure not to do the appropriate records, resulting in glitches become stranded due to large losses. for this phenomenon, in order to reduce duplication of consumer lack of work, and constantly enhance the ability of the fault relay staff and gain experience, improve relay protection indicators, to ensure the healthy operation of power equipment and power grid safety and stability. effectively troubleshooting management will do a good job, and through scientific management to guide the safe operation and maintenance work must be implemented on the computer to malfunction and vulnerability management, with computer powerful, for the occurrence of the fault storage Statistics, summary, classification, and careful study, analysis, looking for equipment operation rules to better enable fault management applications, services, maintenance and safety in operation. Links to free download http://www.hi138.com 3, troubleshooting measures
1, independent of the relay device according to the type of failure Statistics. The current system is running a variety of circuit protection devices, transformer protection, bus differential protection, reactor protection, capacitor protection, reclosing device or relay , standby power from the switching device, switching boxes, voltage switch boxes, and other protection or automatic safety devices, their failure in the microcomputer in accordance with the type of device Statistics, instead of a list of records or Statistics, etc. stations.

2, the relay fault classification in addition to equipment failure or by degree of influence of power grid is divided into general, serious, critical three categories, it can also produce according to the direct cause of failure, the fault is divided into poorly designed (including the two sub-circuit and device theory), counter-measures are not implemented, poor quality components (including the quality of the product itself, after a long run backward and aging products), staff errors (including faulty wiring, improper setting error or debug, error identification, acceptance is not in place ) four aspects. Statistics for this failure, the failure risk based on the one hand, the degree of consumer lack of priority arrangements; the other hand, to facilitate the classification of fault liability and targeted rectification from the fundamental solution to the failure may occur again , but also to ensure that the troubleshooting process results.

3, clear the channel relay log or system defects order to gradually master the equipment, operation rules, and constantly improve the level of relay operation and maintenance personnel, there must be a variety of relay protection equipment failure to make timely and comprehensive statistics , in addition to relay the fault to be found on his own time statistics, but also the importance of timely statistics on duty substation operation found fault, but to do the latter, often more difficult to end, must run the department (staff), following a clear electrical protection fault reporting channels, the system, through the system requirements, clear reporting lines failure, failure handling boundaries, dealing with the consequences of failure delays in the attribution of responsibility, to ensure that every failure can be timely statistics, looking through the defect management device operation of the law to lay a solid foundation.

Fourth, the relay fault management measures
1, track relay equipment operation, timely, reasonable arrangements for consumers lack through fault management, you can keep abreast of the operation of equipment, be aware of: what equipment failures, people can rest assured, what equipment there is failure, failure would not affect the safe operation of equipment, and faulty equipment, according to the nature of failure, in order of priority, immediately arrange to resolve or gradually incorporated into the monthly production of consumer lack of equipment maintenance plan or a combination of relay regular inspections, transfer of the check, condition-based maintenance for Consumers lack of equipment to ensure stable operation of health facilities as much as possible.

2, ahead of prevention, safety in production. By fault management, data on the master fault in an accident prior to its failure to lead, we must timely analysis, the development of countermeasures. To be able to immediately eliminate the failure, lack of immediate consumer organization staff; that can not immediately eliminate the fault, a re-analysis to develop remedial measures, and earnestly desired the accident.

3, timely and accurate statistics on the relay protection equipment for grading, to really achieve the rating of each relay protection equipment in place, it must be always fully grasp the problems of each relay protection equipment, and rationalization of its management, thereby achieving a dynamic rating of the equipment and scientific management.

References
1 Yang, Dongshan, China Power Relay Technology development and prospects [J]. Private Technology ,2009 -08-20. Links to free download http://www.hi138.com