Method for overhauling power line of hydraulic power plant

By designing an automatic maintenance process in the computer monitoring system of the hydropower plant, the problems of low operating efficiency and high risk of misoperation in the existing technology of hydropower plant 500kV line are solved, and the automatic switching of the line is realized, improving operation efficiency and safety.

CN119651584APending Publication Date: 2025-03-18THREE GORGES JINSHAJIANG CHUANYUN HYDROPOWER DEV CO LTD
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Patent Information

Application Number
CN202411777718.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-05
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

The existing hydropower plants have low operating efficiency and high risk of misoperation, making it difficult to meet the requirements of efficient scheduling and operation management.

Method used

A method for power line maintenance of hydropower plants is designed, and the automatic judgment of line status and process control is realized through a computer monitoring system, including responding to power outage dispatch commands, issuing disconnection instructions one by one, changing line switch status, and automatically performing maintenance actions when preset conditions are met.

Benefits of technology

The automatic switching and maintenance status of the 500kV line of the hydropower plant has been realized, which reduces the risk of omissions in manual supervision, improves operation efficiency and safety, and reduces the risk of instability of the power system caused by misoperation.

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Abstract

The invention discloses a hydraulic power plant electric power line maintenance method, and belongs to the technical field of hydraulic power plant line management, and the method comprises the steps: responding to a received power failure scheduling command, after a power failure scheduling preset condition is satisfied, issuing a disconnection instruction to line switches one by one, and when all line switches are disconnected, converting the line switches into a hot standby state; after a preset condition that the line switch is switched to cold standby is met, issuing an opening instruction to the disconnecting links corresponding to the line one by one, and when all the disconnecting links are switched equally, switching the line switch to a cold standby state; and after the preset condition for switching the line to overhaul is met, issuing a closing instruction to the overhaul ground knife of the line one by one, and switching the line to an overhaul state. The 500kV line power-off maintenance device can automatically, quickly and safely complete 500kV line power-off maintenance.
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