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Reactive power compensation method, device and equipment

A compensation device and compensation method technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation, etc., can solve problems such as voltage fluctuations, achieve the effects of reducing control costs, solving voltage fluctuations, and suppressing voltage fluctuations exceeding the standard

Active Publication Date: 2020-01-10
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This application can realize voltage fluctuations only through the control methods of different operating angles, without adding any actual equipment, reducing control costs, and solving the technical problem of voltage fluctuations in the prior art

Method used

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  • Reactive power compensation method, device and equipment
  • Reactive power compensation method, device and equipment
  • Reactive power compensation method, device and equipment

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Embodiment Construction

[0039] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0040] In some cases, due to the limitation of equipment manufacturing capacity, the voltage fluctuation caused by the first tap of the converter transformer cannot be too large, and the control voltage fluctuation will greatly limit the group capacity of the reactive power compensation device. However, the limited group capacity of the reactive power compensation ...

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Abstract

The invention discloses a reactive power compensation method, device and equipment. The method comprises the following steps: when a DC transmission system meets the conditions for input of a reactivepower device and the reactive power of the DC transmission system is greater than or equal to AC absorption reactive power, a group of reactive power compensation device is input into the DC transmission system; when the operation angle of the DC transmission system is greater than the first preset operation angle, tap operation is performed on the DC transmission system to adjust the operation angle of the DC transmission system to a normal range; and when the operating angle of the DC transmission system is less than the second preset operation angle, tap operation is performed on the DC transmission system to adjust the operating angle of the DC transmission system to the normal range. The reactive power compensation method can realize voltage fluctuation only through the control modeof different operation angles without additionally arranging any actual equipment so as to reduce control cost and solve the technical problem of voltage fluctuation in the prior art.

Description

technical field [0001] The present application relates to the field of reactive power compensation, in particular to a reactive power compensation method, device and equipment. Background technique [0002] In order to ensure its own reactive power requirements, the DC transmission system often needs to be equipped with reactive power compensation devices. The reactive power required by the DC transmission system increases with the increase of the active power, so the reactive power equipment is required to be gradually put into or removed with the change of the active power. In the process of putting in or removing reactive power equipment, it will have an impact on the AC and DC system, causing fluctuations in the AC voltage. [0003] Usually, the power system has restrictions on the fluctuation of AC voltage and needs to meet the requirements of relevant standards for power quality. Therefore, when designing the group capacity of reactive power compensation equipment, th...

Claims

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Application Information

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IPC IPC(8): H02J3/18
CPCH02J3/18Y02E40/30
Inventor 辛清明彭发喜赵晓斌许树楷雷博
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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