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Reactive power control method of grid gateway based on automatic volume control (AVC) system

A power control and active power technology, applied in reactive power adjustment/elimination/compensation, reactive power compensation and other directions, it can solve the problem of large deviation in the setting range, inability to quantitatively measure the reactive power capacity of the receiving end grid, and grid reactive power coordination Problems such as poor control

Active Publication Date: 2012-10-03
GUANGDONG POWER GRID POWER DISPATCHING CONTROL CENT +1
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Problems solved by technology

[0004] Based on this, it is necessary to provide an AVC system based on the problem that the above-mentioned existing technology cannot quantitatively measure the reactive power bearing capacity of the receiving end grid, and its setting range deviation is large, resulting in poor coordination and control of reactive power between grids. Reactive power control method at gateway of power grid

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  • Reactive power control method of grid gateway based on automatic volume control (AVC) system
  • Reactive power control method of grid gateway based on automatic volume control (AVC) system
  • Reactive power control method of grid gateway based on automatic volume control (AVC) system

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Embodiment Construction

[0014] The specific embodiments of the method for controlling reactive power of an electrical gateway based on an AVC system of the present invention will be described in detail below with reference to the accompanying drawings.

[0015] figure 1 A flow chart of a method for controlling reactive power of an electrical gateway interface based on an AVC system according to an embodiment is shown, which mainly includes the following steps:

[0016] Step S1, according to the power flow calculation data and constraint conditions of the power grid, obtain a relationship curve between the total active power delivered by the upstream gateway and the corresponding average coordination power factor limit value.

[0017] Specifically, the power flow calculation data includes: branch circuit data, transformer parameters, loads in various operating modes and generator output data.

[0018] Specifically, the constraints include: control variable constraints and state variable constraints; ...

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Abstract

The invention provides a reactive power control method of a grid gateway based on an automatic volume control (AVC) system. The reactive power control method comprises the following steps: obtaining the relation curve between the general active power delivered from an upstream gateway and the corresponding average coordinating power factor limit value according to the load flow calculation data and the restriction condition of a grid; monitoring the reactive power delivered from the pressure side in every transformer in an upper main network in real time, calculating the limit value of the upstream gateway coordinated power factor of every transformer substation according to the relation curve; calculating the limit value of the coordinated power factor of a downstream gateway according to the limit value of the upstream gateway coordinated power factor; updating a control parameter of the AVC system according to the limit value of the power factor of the grid downstream gateway, and regulating the reactive power of the grid gateway according to the control parameter. According to the technology provided in the invention, the safety running of the upper main network is fully considered, the reactive regulating ability and the active load level of a lower branch network are also considered; therefore the mismatch problem possibly caused by the reactive / voltage regulation of the upper and lower grids is solved, and the voltage quality of the grid is further improved.

Description

technical field [0001] The invention relates to a reactive power control method, in particular to a reactive power control method of an electrical gateway interface based on an AVC system. Background technique [0002] At present, the automatic voltage control (AVC) system has become an important technical means to solve the reactive power / voltage regulation. By readjusting the reactive power distribution of the power grid, it can ensure that the power grid operates in a safer and more economical state. In the realization process, the whole network reactive power optimization is the core and foundation. [0003] The general technology based on AVC system to achieve reactive power optimization, in actual operation, the formulation of AVC control parameters is directly issued according to relevant guidelines and expert experience, although this reflects the actual operation status of the power grid to a certain extent, but , With the rapid development of the power grid and th...

Claims

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Application Information

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IPC IPC(8): H02J3/18
CPCY02E40/30
Inventor 温柏坚张勇军张锡填黄明辉杨银国李力辛拓刘希喆蔡泽祥
Owner GUANGDONG POWER GRID POWER DISPATCHING CONTROL CENT
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