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Power grid automatic voltage control method and computer readable medium

A technology of automatic voltage and control method, applied in the direction of AC network voltage adjustment, reactive power compensation, reducing/preventing power oscillation, etc., can solve the problems of substation voltage overshoot, communication channel interference, inability to judge whether the control command is a repeated command, etc. , to achieve the effect of reducing the impact

Pending Publication Date: 2022-04-12
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Problems solved by technology

Second, due to communication channel interference, when the local avc substation receives the same continuous control command, the local avc substation cannot judge whether the control command is a repeated command. If it is adjusted according to the received control command, it is very Potentially cause over-regulation of substation voltage

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  • Power grid automatic voltage control method and computer readable medium
  • Power grid automatic voltage control method and computer readable medium

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Embodiment Construction

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0042] The core of the present invention is to provide an automatic voltage control method. When adjusting the voltage of the high-voltage side bus, the voltage signal whose frequency deviation from the set frequency is greater than the preset frequency deviation in the voltage of the high-voltage side bus is filtered out, Reduce the impact on active power when reactive power regulation is performed on the high-voltage side bus voltage.

[0043] An automat...

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Abstract

The invention relates to an automatic voltage control method for a power grid and a computer readable medium, and the automatic voltage control method comprises the steps: sampling a voltage signal of a high-voltage side bus through employing a differential amplification circuit, carrying out the image smoothing of the signal when the frequency deviation between the frequency of the sampled voltage signal and a set frequency is greater than a first preset frequency deviation, and carrying out the image smoothing of the signal; when an absolute value of a difference value between the voltage signal after image smoothing and a preset voltage signal reference value is not smaller than a voltage difference threshold value, a first control signal is generated, and the series resistor is adjusted based on the first control signal; the absolute value of the difference value between the effective value of the voltage signal after image smoothing and the preset voltage signal reference value is smaller than the voltage difference value threshold value. Compared with the prior art, the method has the advantages of effectively reducing the influence on the power when the voltage of the high-voltage side bus is adjusted, and the like.

Description

technical field [0001] The invention relates to the technical field of voltage regulation, in particular to an automatic voltage control method for a power grid and a computer-readable medium. Background technique [0002] Automatic voltage control (hereinafter referred to as avc, automatic voltage control) system is an important means to realize grid security (increase voltage stability margin), economy (reduce network loss), and high-quality (increase voltage qualification rate) operation. The avc system architecture is based on the grid energy management system (ems), which can use the real-time operation data of the grid to scientifically make the best reactive power and voltage adjustment scheme from the perspective of overall grid optimization, and automatically send it to power plants, substations, and lower-level grid dispatchers Institutional execution. [0003] At present, for regional power grid provincial dispatching avc control systems with 500kv substations, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/16H02J3/24
CPCY02E40/30
Inventor 毕忠勤徐富强孙苏苏李永斌周平
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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