Power substation busbar voltage real-time monitoring method

A bus voltage, real-time monitoring technology, applied in the direction of measuring current/voltage, measuring devices, measuring electrical variables, etc., can solve the problems of national grid assessment requirements, unsatisfied voltage qualification rate of substations, and difficult voltage control

Active Publication Date: 2019-03-12
LISHUI POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

For some substations that use natural energy to generate electricity, due to the uncertainty of the geographical environment, the voltage fluctuates greatly, making voltage control more difficult.
For example, Lishui, Zhejiang is located in a mountainous area, so most of the substations are used for hydropower generation. Due to the instability of the water flow, the voltage of the substation fluctuates greatly, making voltage control more difficult.
At present, there is a lack of methods dedicated to bus voltage monitoring, resulting in the voltage qualification rate of some substations using natural energy to generate electricity cannot meet the assessment requirements of the State Grid

Method used

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  • Power substation busbar voltage real-time monitoring method

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Embodiment

[0024] Embodiment: A method for real-time monitoring of substation bus voltage in this embodiment, such as figure 1 shown, including the following steps:

[0025] S1: Initialization of the system, including the following:

[0026] Set the bus voltage maximum threshold Vmax and the bus voltage minimum threshold Vmin;

[0027] Set the maintenance status flag bit Ck to 0, and set the maintenance status threshold CK;

[0028] Set the mutation times flag bit Tb to 0, and set the mutation times threshold TB;

[0029] Set the mutation threshold ΔV;

[0030] Initialize time array T;

[0031] The bus voltage is divided into the first type of bus voltage, the second type of bus voltage and the third type of bus voltage. Among them, the first type of bus voltage corresponds to the AC 10kV rural grid bus voltage, and the qualified range of the voltage is [V 1min , V 1max ],V 1min , V 1max They are the minimum and maximum values ​​of the bus voltage of category 1 respectively; the ...

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Abstract

The invention discloses a power substation busbar voltage real-time monitoring method. The method includes the following steps of dividing the voltages of busbars into N types, and setting different voltage qualified ranges for the voltages of all types of busbars, periodically collecting the voltages of the busbars of a target power substation, and generating corresponding warning according to the collected voltages of the busbars. An existing power substation data collecting and monitoring control system is sufficiently used; on the premise of extremely less increasing hardware devices, thevoltages of the busbars of the power substation are monitored in real time mainly through software, and the assessment requirements of the State Grid Corporation of China for the voltage qualified rate can be met for the power substation at extremely low refitting cost.

Description

technical field [0001] The invention relates to the technical field of busbar voltage monitoring, in particular to a method for real-time monitoring of busbar voltage in a substation. Background technique [0002] At present, the national grid is more and more strict in the assessment of the qualification rate of substation voltage. For some substations that use natural energy to generate electricity, due to the uncertainty of the geographical environment, the voltage fluctuates greatly, making voltage control more difficult. For example, the Lishui area of ​​Zhejiang Province is located in a mountainous area, so most of the substations are used for hydropower generation. Due to the instability of the water flow, the voltage of the substation fluctuates greatly, making voltage control more difficult. At present, there is a lack of methods dedicated to bus voltage monitoring, resulting in the voltage qualification rate of some substations using natural energy to generate ele...

Claims

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Application Information

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IPC IPC(8): G01R19/165
CPCG01R19/16576
Inventor 胡洪涛祝巍蔚陈楠罗庆丰徐文陈晓强季青锋杜倩昀
Owner LISHUI POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER
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