Coordination control method for flexible direct current and reactive compensation equipment in plant station in urban flexible direct current power transmission system

A technology of power transmission system and coordinated control, applied in reactive power compensation, reactive power adjustment/elimination/compensation, power transmission AC network, etc., can solve the problems of opposite or inconsistent control objectives, waste of reactive power compensation, etc., to improve power supply quality, improve power quality, reduce the effect of voltage collapse

Inactive Publication Date: 2019-05-28
国网江苏省电力公司电力经济技术研究院 +2
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AI Technical Summary

Problems solved by technology

If the reactive power control of the flexible DC converter station grid is not coordinated with other reactive power compensation equipment, the control objectives may be opposite or inconsistent, resulting in a great waste of reactive power compensation. Due to the dense load of the urban power grid, it is necessary to protect certain reactive power Backup plays a vital role in the operation safety of urban power grids

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  • Coordination control method for flexible direct current and reactive compensation equipment in plant station in urban flexible direct current power transmission system
  • Coordination control method for flexible direct current and reactive compensation equipment in plant station in urban flexible direct current power transmission system

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Embodiment Construction

[0014] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] A method for coordinated control of the reactive power compensation equipment in the flexible direct transmission system and the power station in the urban flexible direct transmission system, which is characterized in that: through the reactive power control of the flexible DC converter station and the fixed capacitors, reactors, and main transformer taps in the substation The coordination and cooperation of reactive power and voltage adjustment equipment can better stabilize the coordinated voltage level in the plant, reduce voltage fluctuations, and improve the overall voltage stability of the city's voltage.

[0016] Further: the method for coordinating the control of the reactive power compensation equipment in the urban flexible direct transmission system and the power station in the city is characterized in that: the urban flexibl...

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Abstract

The invention provides a coordination control method for flexible direct current and reactive compensation equipment in a plant station in an urban flexible direct current power transmission system. Through coordination and cooperation of reactive power control of flexible direct current converter station and reactive voltage regulation equipment such as a fixed capacitor, a reactor and a main transformer tap in a transformer station, the coordinated voltage level in the transformer station is better stabilized, voltage fluctuation is reduced, and the overall voltage stability level of urban voltage is improved. Compared with the prior art, the method has the advantages that the reactive compensation capability of the converter station can be fully utilized, the power supply quality of theurban power grid is improved, the grid loss is reduced, and the like.

Description

technical field [0001] The invention relates to a coordination and cooperation technology of a flexible direct current transmission system and an alternating current system, in particular to a coordinated control method for a flexible direct current transmission system and reactive power compensation equipment in a plant station in an urban flexible direct current transmission system. Background technique [0002] With the rapid growth of power grid development and the acceleration of urbanization, urban power consumption units are becoming more and more dense, and the increase in power supply lines and power sources has led to an increase in the short-circuit capacity of the system. In order to reduce the short-circuit capacity of the system, urban power grids are gradually By adopting a hierarchical and partitioned operation structure, the partitioned operation of the urban power grid can reduce the short-circuit current of the power grid and make the power supply partition...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02J3/36H02J3/46
CPCY02E40/30Y02E60/60
Inventor 杨林王新宝蔡晖付俊波祁万春王荃荃吴晨谢珍建俞秋阳常宝立
Owner 国网江苏省电力公司电力经济技术研究院
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