Realization method for online control strategies of security control device with self-adaption running modes

Abstract

The invention relates to a realization method for online control strategies of a security control device with self-adaption running modes. The method comprises the following steps of: automatically recognizing running modes through the security control device, and matching and checking with definite values of online strategies including a plurality of running modes obtained through calculation at a scheduling end; when the running mode changes and the scheduling end can not calculate in time and issue new online strategy, automatically matching the definite value of the online strategy running in the device according to the changed running mode by the device, and once new fault occurs, enabling the security control device to operate according to the definite value of the online strategy matched with the current running mode. By utilizing the method, the adaptability of the definite value of the online strategies of the security device to the running modes is improved.

Description

technical field [0001] The invention belongs to the field of electric power system automation, and more specifically relates to a method for realizing an online control strategy of a safety control device with self-adaptive operation mode. Background technique [0002] The security and stability control system is an important part of ensuring the safe and stable operation of the power grid, and the security and stability control strategy is the core of the security and stability control system. According to the study of power grid topology and operation conditions, the calculation personnel or parallel computer system will store the calculated control strategies and related information of each expected fault in the historical database in a specific format on the basis of a large number of stability calculations and analysis calculations. The control strategy table is the main expression of the security and stability control strategy. Its main content includes four types of i...

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Problems solved by technology

[0004] (2) Failure mode

[0009] (1) Due to the limited capacity of the control strategy table for offline design, it is impossible to consider all the network structures and operation modes of the actual power grid. Therefore, the strategy table can only be compiled according to the section power flow and more serious operation modes during design, which is very difficult in actual operation. There may be a large overcut, and the economic performance is poor

[0010] (2) The control strategy table for offline design is mainly aimed at the operation mode that occurs during normal operation, but for the grid operation mode after multiple faults occur one after another, there is a mismatch phenomenon, which leads to the inability of the stability control system to play a role, thus affecting the grid operation. safe and stable

[0013] Usually, when designing an online security control system, only the operation mode of the power grid is considered when the dispatcher performs online calculation and generates an online control strategy. Recalculate the online strategy according to the fault trigger, and issue a new online strategy setting value; this process usually takes several minutes, and once a new fault occurs in the power grid during this period, it will cause the safety control device to fail to communicate with the system when it is started. The operation mode that can be matched with the online strategy setting can only be switched to the offline strategy setting mode, and the action is performed according to the offline strategy setting inside the device, thus sacrificing the economy and adaptability brought by the online strategy setting

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