A method for determining the maintenance and operation mode of electrical equipment considering the reliability of the power grid
A technology of operation mode and electrical equipment, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the problems of insufficient consideration of power grid security, failure to take into account cascading failures and successive failures, and failure to take into account grid safety issues, etc., to avoid Limitations, accurate and reliable calculations, and the effect of improving security
Active Publication Date: 2017-09-15
STATE GRID CORP OF CHINA +2
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Problems solved by technology
This method avoids the limitations of technicians' personal skills, but because of the economical operation target instead of the operational security target, the security of the power grid is not considered enough, and the cascading failures and successive failures caused by uncertainty cannot be taken into account. Grid security issues brought about by micro-environmental conditions
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[0028] Such as figure 1 As shown, the steps of the method for determining the maintenance operation mode of electrical equipment considering the reliability of the power grid in this embodiment include:
[0029] 1) According to the operating conditions of the power grid and the electrical equipment to be repaired, an alternative maintenance operation mode is generated;
[0030] 2) For each maintenance operation mode, calculate the expected number of reductions in load demand electricity caused by power generation capacity shortage or grid constraints within a given time interval as the adequacy evaluation index EENS, and calculate the load demand caused by grid component failures to ensure stability The expected number of power cuts is used as the safety evaluation index EDENS, and the reliability evaluation model of the power grid is established based on the adequacy evaluation index EENS and the safety evaluation index EDENS, and the reliability evaluation of the power grid ...
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The invention discloses a method for determining the maintenance operation mode of electrical equipment taking into account the reliability of the power grid. The indicator EDENS, according to the adequacy evaluation index EENS and the safety evaluation index EDENS, establishes the reliability evaluation model of the power grid. Evaluation index: For the evaluation index of all maintenance operation modes, determine the best maintenance operation mode according to the principle of the smallest total cost considering reliability. The invention can improve the operation safety of the power grid when the electrical equipment is overhauled, avoid limitations due to the personal skills of the technicians, calculate accurately and reliably, and can determine a safe and economical overhaul scheme.
Description
technical field [0001] The invention relates to the field of power system operation and maintenance, in particular to a method for determining the maintenance and operation mode of electrical equipment taking into account the reliability of the power grid. Background technique [0002] Electrical equipment maintenance is the daily work of power grid maintenance. When electrical equipment fails or its normal operation performance decreases, electrical equipment maintenance needs to be arranged. Only in this way can the safe operation of the power grid be guaranteed. When electrical equipment is overhauled, it is often necessary to shut down the electrical equipment to be overhauled and ground the electrical equipment to be overhauled before the corresponding maintenance work can be carried out. Since the electrical equipment to be repaired is out of operation, the power grid is equivalent to an N-1 situation, and the safety performance of the power grid will be significantly ...
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IPC IPC(8): H02J3/00
Inventor 彭石明邓集李欣夏骏
Owner STATE GRID CORP OF CHINA