Method and device for communication of security and stability control system device

Abstract

The invention discloses a communication method for a security and stability control system device, and the method is executed by a substation and comprises the following steps: determining a corresponding relationship between an identity label of a generator tripping execution station and a framing sequence number in a communication protocol; during power-on, judging an identity identifier of a generator tripping execution station which is put into work of the substation; if it is judged that the first all-machine execution station is put into work, determining that the data of the first all-machine execution station is included in a sub-frame corresponding to the first all-machine execution station; if it is judged that the second generator tripping execution station does not work, deleting the sub-frame corresponding to the second generator tripping execution station in the data packet to be sent to the master station; and sending the data packet to a master station. The method is improved on the basis of the communication mechanism of the current stability control device, firstly, whether useless sub-frames exist in sub-frames can be automatically identified according to the channel switching information of the device, so the sub-frames are eliminated, the total number of the sub-frames is reduced, and the communication real-time performance is improved.

Description

technical field [0001] The present invention relates to the technical field of electric power safety and stability control systems, in particular to a method and device for communicating with safety and stability control system devices. Background technique [0002] The safety and stability control device is a control device installed in the power plant or substation (conversion) station to ensure the stability of the power system when it encounters a large disturbance, and realizes machine cut, load shed, rapid output reduction, and DC power emergency increase It is an important facility for the second line of defense to maintain the safe and stable operation of the power system. The safety and stability control system is a system composed of the safety and stability control devices of two or more power stations connected through communication equipment to realize the stability control of the regional or larger power system. According to the role played by the stability co...

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Problems solved by technology

Therefore, once the safety and stability control system has abnormal actions, it will cause quite serious consequences and pay a high price

For example, the safety and stability control subsystem in a certain area malfunctions due to software deadlock, communication error code, communication module and verification loopholes, resulting in wrong load shedding

In addition, the misoperation and refusal of operation caused by the damage of stability control reliability will form an unbearable secondary disturbance impact on the power grid. For this reason, the State Grid proposes that the stability control device must have a command link self-check function to solve the problem of the stability control device. And the command logic link abnormality caused by the failure of the software and hardware of the communication equipment

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