Remote latching method for site-prepared self-throwing device

Abstract

The invention discloses a remote latching method for a site-prepared self-throwing device. The method comprises the steps that the operation signal of a substation stability control device is connecting with a substation integrated automation background system; the substation integrated automation background system acquires the operation signal of the substation stability control device and uploads the signal to a dispatch master station EMS system in real time in the form of a remote signal; after receiving the signal, the dispatch master station EMS system generates a latching control instruction according to the latching strategy of the site-prepared self-throwing device and calls a remote control interface to realize batch release of the latching control instruction; a target site receives the latching control instruction and latches the site-prepared self-throwing device thereof. According to the invention, real-time monitoring, acquisition and uploading of the operation signal ofthe substation stability control device and remote latching and monitoring of the site-prepared self-throwing device are realized; the existing power grid hardware system does not need to be improved, so that the cost is low; and through the existing power grid hardware and software systems, stable, reliable and rapid signal transmission is realized, and signal transmission is stable, reliable and safe.

Description

technical field [0001] The invention specifically relates to a remote locking method of a station equipment self-injection device. Background technique [0002] With the continuous advancement of UHV AC and DC construction, long-distance high-power transmission power becomes possible. Affected by factors such as the relatively weak grid structure in the early stage of UHV grid construction, the lagging construction of supporting power sources, and the bottleneck of grid security and stability constraints, UHV DC blocking faults will cause large-scale power flow shifts, which will have a greater impact on the receiving end grid. In order to ensure the overall safety and stability of the receiving-end power grid and ensure the efficiency of UHV DC transmission, a large-scale stable control load shedding system needs to be built simultaneously in the surrounding area. As a common safety automatic device for the power grid, the standby automatic switching device can significant...

AI Technical Summary

Problems solved by technology

Blocking is realized through regional backup automatic switching, and the regional control center sends a pause or blocking command to control the action behavior of station backup automatic switching, thereby realizing the main and auxiliary control mode of regional backup automatic switching and site backup automatic switching. The transformation often involves other parts of the power grid For protection or safety automatic devices, special channels need to be added, the transformation is cumbersome, and it is difficult to promote on a large scale

However, the wide-area standby automatic switching control system based on the EMS system establishes a wide-area standby automatic switching model at the main dispatching station, and uses EMS real-time telemetry information to realize logical judgment. The strategy and verification method of the backup auto-injection cannot solve the problem of remote blocking of the backup auto-injection for the time being.

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