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A control method and device for a power generation source and a distributed power generation system thereof

A distributed power generation and control method technology, applied in the direction of single-network parallel feeding arrangement, etc., can solve problems such as power generation source off-grid protection, power grid voltage rise, and electrical equipment hazards, so as to maintain stable operation of the power grid and improve power grid adaptability performance and reduce off-grid/grid-connected frequency

Active Publication Date: 2017-12-22
SUNGROW POWER SUPPLY CO LTD
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Problems solved by technology

The existing problem is that the voltage and frequency fluctuations of the power grid are likely to cause frequent off-grid protection and repeated grid-connected actions of the power generation source in the distributed power generation system; It has a great impact on the grid voltage. For example, when the generated power exceeds the rated power required by the load, it is easy to cause the grid voltage to rise, which further triggers the frequent off-grid protection of the power generation source, and the high grid voltage will also affect the power consumption on the grid. equipment poses a hazard

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  • A control method and device for a power generation source and a distributed power generation system thereof
  • A control method and device for a power generation source and a distributed power generation system thereof
  • A control method and device for a power generation source and a distributed power generation system thereof

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] see figure 2 , the embodiment of the present invention discloses a control method of the power generation source in the distributed power generation system, so as to reduce the off-grid / grid connection frequency of the power generation source in the distributed power generation system when the grid operation is unstable, and at the same time reduce the power generated by the power generation source itself The degree of influence on the grid voltage, in...

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Abstract

The present application discloses a power generation source control method, equipment and a distributed power generation system thereof. The method includes: judging whether the power grid operation stability of the distributed power generation system is lower than a preset standard according to changes in power grid parameters; When the grid operation stability of the distributed generation system is lower than the preset standard, calculate the power value that needs to be adjusted in the distributed generation system; distribute the power value that needs to be adjusted in the distributed generation system to each power generation source according to the preset distribution rules, and the Each power generation source coordinates with each other to reduce the off-grid / grid connection frequency of the power generation source in the distributed power generation system when the grid operation is unstable, and at the same time reduce the influence of the power generated by the power generation source itself on the grid voltage.

Description

technical field [0001] The present invention relates to the technical field of distributed power generation, and more specifically, to a control method and equipment for a power generation source and a distributed power generation system thereof. Background technique [0002] figure 1 It shows an existing distributed power generation system, in which power generation sources at different nodes are connected in parallel to provide power to local loads nearby. The existing problem is that the voltage and frequency fluctuations of the power grid are likely to cause frequent off-grid protection and repeated grid-connected actions of the power generation source in the distributed power generation system; It has a great impact on the grid voltage. For example, when the generated power exceeds the rated power required by the load, it is easy to cause the grid voltage to rise, which further triggers the frequent off-grid protection of the power generation source, and the high grid ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/46
Inventor 俞雁飞倪华杨宗军代尚方
Owner SUNGROW POWER SUPPLY CO LTD
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