A remote control safety measure execution method for a relay protection device

Abstract

The present invention provides a remote control security measures execution method for a relay protection device. The method comprises the following steps of S1, providing an allowable list, and automatically synchronizing the information of a relay protection device to an executing device used for remotely controlling the relay protection device and arranged in a transformer substation, wherein the allowable list includes the information of the relay protection device capable of being remotely controlled; S2, after receiving a remote control instruction by the executing device, judging whether to permit the operation or not: firstly, accessing the allowable list; secondly, searching and judging whether an instruction executing device is in the allowable range or not according to the information of the relay protection device of the remote control instruction; if the device is in the allowable range, executing the remote control instruction; otherwise, refusing to execute the remote control instruction and feeding back an illegal operation alarm. According to the invention, the remote control of the relay protection, in joint debugging with the security measures, is realized. The joint debugging of the security measures isolation is conducted independent of the relay protection device through the allowable list. Therefore, the execution of the security measures is realized.

Description

technical field [0001] The invention belongs to the technical field of power systems, and in particular relates to the implementation of safety measures for remote remote control of a conventional substation based on the IEC60870-5-103 protocol and an intelligent substation relay protection device based on the IEC61850 protocol. Background technique [0002] With the development of intelligent stations and the continuous deepening of the application of unattended substations, research on the promotion and application of remote operation of relay protection devices has been carried out in China. Mainly include: remote control joint commissioning of relay protection device remote investment and withdrawal of soft pressure plate (referred to as “relay protection remote joint commissioning”), research on the implementation of safety measures for relay protection remote investment and withdrawal of soft pressure plate, etc. This program focuses on the research on the implementati...

AI Technical Summary

Problems solved by technology

Calculated according to the implementation of the safety measure ticket, one person supervises and one person operates the isolation method. It takes 1-1.5 hours for the smart station to complete the whole station (only for execution), and it takes more than 1.5 times for the conventional station to untie the line.

[0006] (2) After the security measures of the existing technical solution are implemented, the soft message information of the protection device with security measures in the joint debugging process cannot be sent to the monitoring background and the control master station

If a protection action occurs during the remote control joint debugging process, the protection signal cannot be sent to the monitoring background and the control master station, which will cause a large delay to the remote analysis of the protection action status and affect the follow-up work (line inspection, fault point troubleshooting, etc.), Extend equipment recovery time

[0007] (3) The implementation of the safety measures of this technical solution in the conventional station needs to operate on the secondary circuit, which may easily cause faults on the secondary circuit (such as DC ground loss, mistaken disconnection, etc.)

[0008] (4) After the implementation of unattended duty, relay protection and remote control joint debugging will become a normal work. Frequent plugging and unplugging of network cables and disconnection of RS-485 cables will easily accelerate the damage of network ports and terminals, resulting in communication failures

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