Electric distribution network reactive-voltage three-level coordination control method

A three-level coordination and control method technology, applied in the direction of reactive power adjustment/elimination/compensation, reactive power compensation, etc., can solve the problems of large loss of distribution network lines and poor quality of terminal voltage, so as to reduce the number of adjustments and avoid ineffectiveness action, the effect of reducing economic pressure

Active Publication Date: 2014-04-23
南京软核科技有限公司
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Problems solved by technology

[0003] The present invention proposes a three-level coordinated control method for reactive power and voltage of a distribution network. Its purpose is to comprehensively analyze the entire power grid and correct the unreasonable current grid operation mode in view of the above-mentioned problems existing in the prior art. In some places, adjust the gear position of the tap of the on-load tap changer and switch on and off the reactive power compensation capacitor, and perform vol

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  • Electric distribution network reactive-voltage three-level coordination control method
  • Electric distribution network reactive-voltage three-level coordination control method
  • Electric distribution network reactive-voltage three-level coordination control method

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Embodiment Construction

[0012] Referring to the accompanying drawings, the three-level coordinated control method for reactive power and voltage of the distribution network includes the following steps,

[0013] (1) Create its own structure to copy the incoming data, that is, collect the telemetry and remote signaling real-time data of each node in the entire network through the scheduling automated SCADA system; including

[0014] 1) The three-phase active power and reactive power at the head end of the feeder, the three-phase voltage of the busbar (line voltage and phase voltage), the position of the bus tie switch, the position of the outlet switch of the feeder line, and related main network protection information, which are obtained from the SCADA system, Mainnet AVC system acquisition;

[0015] 2) The three-phase active power, reactive power, current, three-phase line voltage and phase voltage at the end of the distribution transformer, the gear position of the distribution transformer, loaded ...

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Abstract

The invention discloses an electric distribution network reactive-voltage three-level coordination control method, which comprises the following steps: (1) creating data input by self structure duplication, (2) performing forward chaining, (3) performing back substitution, (4) performing astringency judgment, (5) returning a result to a caller. The method has the advantages that 1) layered control over equipment according to the installation position and the control range of the equipment; 2) the variation trend of the operating state of a power grid is judge in advance according to short-run and super short-run load predicting technologies, the perspectiveness of adjustment tactics is ensured, the adjustment times of the equipment are reduced, and invalid actions are avoided; 3) the current situation that adjustment equipment of the electric distribution network is deficient is solved by classified coordination control, the adjustment potence of the adjustment equipment is fully exerted, and the economic pressure for investing and constructing the distribution network is reduced; 4) the method can adapt to multiple conventional and unconventional adjustment equipment, such as a subdivided capacitor, a distribution transformer tap, a line voltage regulator, a line capacitor, SVG, SVC and TSF.

Description

technical field [0001] The invention relates to a three-level coordinated control method for reactive power and voltage of a distribution network, which belongs to the technical field of power distribution networks. Background technique [0002] At present, the distribution lines in most areas widely adopt the unidirectional radiation power supply mode with large trunks and multi-branches. Some lines have low load rate, large seasonal load changes, long power supply radius, and high reactive power consumption, which lead to low power factor, large line loss, and poor terminal voltage quality. Contents of the invention [0003] The present invention proposes a three-level coordinated control method for reactive power and voltage of a distribution network. The purpose of the method is to comprehensively analyze the entire power grid and correct the unreasonable current grid operation mode in view of the above-mentioned problems existing in the prior art. In some places, adj...

Claims

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Application Information

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IPC IPC(8): H02J3/18
CPCY02E40/30
Inventor 王朝明马春生王晴戚光平
Owner 南京软核科技有限公司
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