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Reactive voltage centralized control method

A centralized control and voltage technology, applied in the field of power grid, can solve the problems of line voltage loss, increase of power loss, reduction of generator transmission and power supply capacity of substation equipment, etc., and achieve the effect of flexible location

Inactive Publication Date: 2019-11-05
詹亿运
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] To adapt to the access of high penetration rate and large-scale distributed power, the research technology of active distribution network with certain adjustment ability under the background of smart grid is actively carried out at home and abroad; the reactive power in the grid often reduces the generator active power output and The power supply capacity of power transmission and transformation equipment will also cause line voltage loss and increase in power loss

Method used

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Experimental program
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Embodiment Construction

[0013] Below in conjunction with specific embodiment, the present invention is described in further detail:

[0014] A method for centralized control of reactive power and voltage, comprising the following sub-steps performed in sequence:

[0015] Step 1: Collect distributed power data: specific data include reactive power, active power, line impedance and admittance;

[0016] Step 2: Carry out power flow calculation: use Newton-Raphson algorithm or PQ node algorithm to carry out power flow calculation, and calculate the loss of each line and node;

[0017] Step 3: Determine whether the voltage of the access point exceeds the limit, if not, return to step 1 to re-measure the data of the distributed power supply; if the voltage exceeds the limit, execute step 4;

[0018] Step 4: Determine whether the distributed power source is adjustable, if the distributed power source is adjustable, adjust the demand side according to the sensitivity of the distributed power source, and the...

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PUM

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Abstract

The invention relates to a reactive voltage centralized control method. The reactive voltage centralized control method comprises the following sub-steps that are performed in sequence: step 1, collecting data of a distributed power supply: including reactive power, active power, line impedance, and admittance; step 2, carrying out power flow calculation; step 3, judging whether the access point voltage exceeds a limit or not; if the access point voltage does not exceed the limit, returning to step 1 to measure the data of the distributed power supply again; and if the voltage exceeds the limit, performing step 4; step 4, judging whether the distributed power supply is adjustable or not; if the distributed power supply is adjustable, performing demand side adjustment according to the sensitivity of the distributed power supply, and then returning to step 2 for iterative calculation; and if the distributed power supply is not adjustable, executing step 5; and step 5, judging whether theload is adjustable or not; if the load is not adjustable, returning to step 1; and if the load is adjustable, determining the adjustment range according to the demand side sensitivity, and then returning to step 2 for power flow calculation.

Description

technical field [0001] The invention relates to the technical field of power grids, in particular to a method for centralized control of reactive power and voltage. Background technique [0002] Adapting to the high penetration rate and the access of large-scale distributed power sources, active distribution network research technologies with certain adjustment capabilities under the background of smart grids are actively carried out at home and abroad; the reactive power in the grid often reduces the active power output of generators and The power supply capacity of transmission and substation equipment will also increase the line voltage loss and power loss. SUMMARY OF THE INVENTION [0003] In order to solve the above problems, the purpose of the present invention is to design a method for centralized control of reactive power and voltage. [0004] To achieve the above object, the present invention adopts the following technical solutions: [0005] A method for centra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/16H02J3/06
CPCH02J3/06H02J3/16Y02E40/30
Inventor 詹亿运
Owner 詹亿运