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Estimation system and estimation method for voltage regulation capability of distributed power supply

A distributed power supply and voltage regulation technology, applied in photovoltaic power generation, electrical components, circuit devices, etc., can solve problems such as uneconomical operation and heavy workload, and achieve the effect of avoiding analysis and calculation and improving work efficiency

Active Publication Date: 2017-02-01
STATE GRID TIANJIN ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing methods for determining the voltage variation range of the grid-connected point after the distributed power generation is connected usually require power flow calculations and detailed parameters of the power grid. The workload is heavy and the operation is very uneconomical.

Method used

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  • Estimation system and estimation method for voltage regulation capability of distributed power supply
  • Estimation system and estimation method for voltage regulation capability of distributed power supply

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Experimental program
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Embodiment Construction

[0024] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0025] A system for estimating the voltage regulation capability of distributed power sources, such as figure 1 As shown, it includes a host computer, a current collector, a voltage collector, a current transformer and a voltage transformer; the host computer is connected to the current collector and the voltage collector through a USB data line; the current collector is connected to the current collector through a current The clamp is connected to the secondary side of the current transformer, and is used to collect the current data of the power supply switch of the grid-connected bus; the voltage collector is connected to the secondary side of the voltage transformer through a cable, and is used to collect the voltage data of the grid-connected bus.

[0026] A method for estimating the voltage regulation capability of distributed power sources, s...

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Abstract

The invention relates to an estimation system and an estimation method for voltage regulation capability of a distributed power supply. The estimation system is characterized by comprising an upper computer, a current collector, a voltage collector, a current transformer and a voltage transformer, wherein the upper computer is connected with the current collector and the voltage collector separately through a USB data line; the current collector is connected with the secondary side of the current transformer through a current clamp for collecting switching current data of a wire inlet power supply of a grid-connected bus; and the voltage collector is connected with the secondary side of the voltage transformer through a cable for collecting the voltage data of the grid-connected bus. By adoption of the estimation system and the estimation method, by estimating the influence to a grid-connected point voltage after grid connection of the distributed type power supply, large-scale analysis and calculation is avoided, so that working efficiency of design and audit is improved.

Description

technical field [0001] The invention belongs to the technical field of grid-connected distributed power sources, and relates to grid voltage regulation technology, in particular to a system for estimating the voltage regulation capability of distributed power sources and an estimating method thereof. Background technique [0002] Since the new energy power station is connected to the grid, it will affect the reactive power generated by the grid or absorb reactive power from the grid. Too much reactive power will cause the voltage of the grid connection point to rise, and insufficient reactive power will cause the voltage of the grid connection point to drop. Therefore, before new energy is connected to the grid, grid technicians must determine the range of voltage changes at the grid-connected point through calculations, and then adjust the operating status of the grid. [0003] However, the existing methods for determining the voltage variation range of the grid-connected ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/06
CPCH02J3/06H02J3/383Y02E10/56
Inventor 袁中琛吴磊黄潇潇姚维平张志君王丽媛李洋洋
Owner STATE GRID TIANJIN ELECTRIC POWER
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