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Secondary voltage control method and device for controlling reactive power of generator to be uniform

A secondary voltage control and generator technology, applied in the control of generators, control systems, reactive power compensation, etc., can solve the problems of uneven reactive power output of generators, large differences in reactive power adjustment capacity, etc.

Active Publication Date: 2015-03-18
POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD +1
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Problems solved by technology

[0005] However, when the reactive power adjustment capacity of the controlled generators differs greatly, or the control sensitivity of the controlled generators to the central bus bar differs greatly, the optimization result of the secondary voltage control will make each controlled generator The reactive power output of the generator is more uneven

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  • Secondary voltage control method and device for controlling reactive power of generator to be uniform
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  • Secondary voltage control method and device for controlling reactive power of generator to be uniform

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Embodiment Construction

[0042] In order to facilitate understanding of the present invention, the following will be described in conjunction with the accompanying drawings.

[0043] This invention proposes a secondary voltage control method for controlling the uniform reactive power output of generators, please refer to figure 1 , including the steps:

[0044] S101. Divide the grid to be controlled into M control areas;

[0045] S102. Obtain reactive power coordination factors of controlled generators in each control area;

[0046] According to the power flow equation of the whole network, the reactive power coordination factors of the controlled generators in each control area are obtained.

[0047] S103. Calculate the mean square error of the reactive power coordination factors of the controlled generators in all control areas;

[0048] According to the reactive power coordination factors of the controlled generators in each control area, the mean square error of the reactive power coordination fa...

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Abstract

The invention discloses a secondary voltage control method for controlling reactive power of a generator to be uniform. The secondary voltage control method the steps of dividing the grid needing to be controlled into M control areas; according to the whole network power flow equation, obtaining reactive coordination factors of the controlled generator in each control area; according to the reactive coordination factors of the controlled generator in each control area, computing mean square difference value of the reactive coordination factors of the controlled generator in each control area; according to the mean square deviation, building a secondary voltage control model of each control area; solving the secondary voltage control model of each control area to obtain reactive regulating quantity of the controlled generator in the corresponding area; outputting the controlled reactive regulating quantity of the controlled generator in each area; and performing secondary voltage control. The invention also provides a secondary voltage control device for controlling the reactive power of the generator to be uniform, more uniform of the reactive power of the generator in the area is realized, and dynamic reactive support capability and voltage stable margin of the system are improved.

Description

technical field [0001] The invention relates to the field of automatic control of power systems, in particular to a secondary voltage control method and device for controlling uniform reactive power output of generators. Background technique [0002] Power system automatic voltage control (Automatic Voltage Control) refers to the real-time monitoring of reactive power and voltage of the power grid under normal operating conditions, online optimization calculations, hierarchical regional control of reactive power sources and related equipment in the power grid, and optimization of reactive power flow. distribution, to achieve the goal of qualified voltage and minimum active power loss of the whole network. Specifically include: primary voltage control (Primary Voltage Control), secondary voltage control (Secondary Voltage Control) and tertiary voltage control (Tertiary Voltage Control). Among them, the primary voltage control uses the automatic voltage regulator to control t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/18H02P9/00
CPCY02E40/30
Inventor 杨银国刘明波欧阳逸风温柏坚林舜江李剑辉李力吴国炳辛拓
Owner POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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