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Load control method for stabilizing fluctuation of distributed power supply

A distributed power supply and load control technology, applied in the direction of single-network parallel feeding arrangement, reducing/preventing power oscillation, etc., to achieve the effect of broad application prospects

Active Publication Date: 2015-09-02
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Distributed power generation has the advantages of energy saving, environmental protection, and less investment. However, as the penetration rate of distributed power generation continues to increase, grid security is facing huge challenges, including power quality, protection and stability of the grid.

Method used

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  • Load control method for stabilizing fluctuation of distributed power supply
  • Load control method for stabilizing fluctuation of distributed power supply
  • Load control method for stabilizing fluctuation of distributed power supply

Examples

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Embodiment 1

[0043] Such as Figure 1-3 As shown, the load control method for the invention of this example to stabilize the fluctuation of the distributed power supply includes the following steps:

[0044] (1) Determine the static load information and establish a static load model;

[0045] (2) Determine the distributed power output power;

[0046] (3) Determine the static load voltage setting value;

[0047] (4) Track the distributed power output power.

[0048] The static load in the step (1) is the residential load in the distribution network; the static load information includes the static load value, the proportion of constant impedance load and the proportion of constant current load, and the model of static load is established.

[0049] Model in described step (1) is:

[0050] P = P n ( ...

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Abstract

The invention relates to a load control method for stabilizing fluctuations of a distributed power supply. The load control method comprises the steps of: determining static load information, and establishing a static load model; determining output power of the distributed power supply; determining static load voltage set value; and tracing the output power of the distributed power supply. The load control method traces output of the distributed power supply through changing load magnitude by adjusting voltage, so as to reduce even eliminate adverse effects of output power fluctuations of the distributed power supply on a power grid. The load control method focuses on active and reactive joint optimization of the power system, has broad application prospect, and has a certain guiding significance to the intelligent development of the power grid.

Description

Technical field: [0001] The present invention relates to a load control method, more specifically to a load control method for smoothing fluctuations in distributed power sources. Background technique: [0002] With the development of economy and society, the demand for clean energy in countries around the world is increasing day by day. The power industry has a tendency to transition from the traditional centralized power supply mode to the combination of centralized and decentralized power supply modes. Distributed power supplies rely on their environmental protection and commercial benefits. The advantages of national policies and other aspects are more and more widely used in power systems. The application of distributed power generation avoids the construction of new transmission lines and large power plants, so it is a cost-effective means to improve the reliability of the power system, and it uses renewable energy for power generation, which alleviates the energy cris...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/24
Inventor 杨占勇李晓东刘广一贾宏杰范士雄杨洋魏明磊孙辰军
Owner STATE GRID CORP OF CHINA
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