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Generator reactive power control method and device based on automatic voltage control substation

An automatic voltage and controller technology, applied in the control of generators, control systems, reactive power compensation, etc., can solve the problems of low-excitation limiter failure causing great harm, threatening the security of the power grid of the unit, and out-of-step operation of the unit. Improve the AVC investment rate and pass rate, reduce protection failure, and improve safety

Pending Publication Date: 2020-09-22
北京京能高安屯燃气热电有限责任公司
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Problems solved by technology

[0005] In addition, the low-excitation limiter is an important protection of the excitation system. Frequent actions have the risk of protection failure. The failure of the low-excitation limiter is very harmful. It may cause the unit to enter an out-of-step operation state, which seriously threatens the safety of the unit and even the power grid. sex

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  • Generator reactive power control method and device based on automatic voltage control substation
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  • Generator reactive power control method and device based on automatic voltage control substation

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[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0027] In the description of this specification, the words "comprising", "comprising", "having", "containing" and so on are all open terms, meaning including but not limited to. A description referring to the terms "one embodiment," "a particular embodiment," "some embodiments," "for example," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one of the present application. Examples or examples. In this specification, schematic representations of the above terms do not ne...

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Abstract

The invention provides a generator reactive power control method and device based on an automatic voltage control substation, and the method comprises the steps: obtaining a reactive power calculationvalue of a power plant according to a generator terminal voltage and a generator terminal current of the power plant; determining safety constraint data of the automatic voltage control substation according to the reactive power measured value, the reactive power calculated value, a preset reactive power difference value and a reactive power minimum limit value of the power plant; and controllingthe reactive power of the generator according to the safety constraint data of the automatic voltage control substation. According to the embodiment of the invention, the reactive power of the generator can be effectively controlled, the safety is high, and the input rate and qualified rate of the automatic voltage control substation are high.

Description

technical field [0001] The invention relates to the technical field of power system control, in particular to a generator reactive power control method and device based on an automatic voltage control substation. Background technique [0002] The automatic voltage control (Automatic Voltage Control, AVC) system is a global reactive power dispatching control system, which is divided into an AVC master station on the grid side and an AVC substation on the power plant side. The AVC substation on the power plant side is a subsystem of the AVC system, installed in the control room of the power plant, and realizes reactive power control of the generator by adjusting the excitation system. [0003] At present, with the rapid development of clean energy power generation, more and more clean energy units are connected to the grid for power generation. Especially when factors such as holidays and weather changes are superimposed, the peak-to-valley difference in system load has increa...

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Application Information

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IPC IPC(8): H02J3/50H02J3/16H02P9/10
CPCH02J3/50H02J3/16H02P9/105Y02E40/30
Inventor 杨子建陈大宇邓建平齐桐悦陈晓萌张小宁闫乃欣王越超赵璐
Owner 北京京能高安屯燃气热电有限责任公司
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