bus voltage assessment method

A technology of bus voltage and bus voltage exceeding the limit, applied in the direction of measuring current/voltage, measuring electrical variables, measuring devices, etc., can solve the problems of not considering voltage characteristics, interfering with dispatcher monitoring and operation, etc., to reduce repeated alarm information , reduce interference, reduce the effect of surveillance

Active Publication Date: 2018-05-29
STATE GRID CORP OF CHINA +2
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AI Technical Summary

Problems solved by technology

The traditional bus voltage monitoring method does not take into account the voltage characteristics between parallel buses of the same voltage level in the same plant, but monitors each bus separately. The defect is that when the voltage of the parallel bus changes synchronously and exceeds the limit, multiple Repeated, invalid alerts that interfere with dispatcher monitoring and operations

Method used

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Embodiment Construction

[0015] The technical solution of the present invention will be further described in detail below.

[0016] 1. The bus voltage assessment method is characterized in that it comprises the following steps:

[0017] 1) The parallel busbars of the same plant station and the same voltage level are used as a virtual assessment busbar;

[0018] 2) Obtain the line voltage value of the bus;

[0019] 3) When the line voltage of the bus is less than the outage set value, the bus is considered out of service, and the outage bus is filtered out;

[0020] 4) After filtering out the outage busbars, check the remaining busbars. When the line voltage of the busbars is between the set maximum and minimum values, it is considered normal; Only one alarm needs to be reported; when the section busbars of the same voltage level in the same plant and station exceed the limit, each alarm will be reported.

[0021] The outage setting value is the voltage base value * 0.7, and the busbars lower than t...

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Abstract

The bus voltage assessment method relates to a monitoring method for grid bus voltage exceeding the limit. In the traditional bus voltage monitoring, each bus is monitored separately. When the voltage of the parallel bus changes synchronously or exceeds the limit, multiple repeated and invalid alarms will be generated, which will interfere with the monitoring and operation of the dispatcher. The present invention comprises the following steps: use parallel busbars of the same factory station and the same voltage level as a virtual assessment busbar; obtain the line voltage value of the busbar; Outage bus; after filtering out outage bus, check the remaining bus, when the line voltage of the bus is between the set maximum and minimum, it is considered normal, otherwise it is considered to exceed the limit, the bus of the parallel bus of the same voltage level in the same plant If the voltage exceeds the limit, only one alarm needs to be reported. This technical solution reduces the interference caused by invalid alarms, and provides effective technical support for operation monitoring personnel to better monitor the bus voltage.

Description

technical field [0001] The invention relates to a monitoring method for a grid bus voltage exceeding a limit. Background technique [0002] The busbar is an important device for collecting, distributing and transmitting electric energy in the power system, and the operating voltage of the busbar directly reflects the operation of the busbar. The traditional bus voltage monitoring method does not take into account the voltage characteristics between parallel buses of the same voltage level in the same plant, but monitors each bus separately. The defect is that when the voltage of the parallel bus changes synchronously and exceeds the limit, multiple Repeated, ineffective alerts that interfere with dispatcher monitoring and operations. Contents of the invention [0003] The technical problem to be solved and the technical task proposed by the present invention are to perfect and improve the existing technical solutions, provide a bus voltage assessment method, and achieve t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/165
Inventor 李继红吴秋晗陈利跃黄斌占震滨吴利锋吴华华马国梁孙世明杨冠军
Owner STATE GRID CORP OF CHINA
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