Automatic voltage control-based distribution network and distributed photovoltaic power plant control method

A distributed photovoltaic and photovoltaic power station technology, applied in the direction of photovoltaic power generation, electrical components, circuit devices, etc., can solve the problem that the AVC system of the power station cannot dynamically obtain the real-time indicators of the main network, the capacity of reactive power equipment is not effectively used, and the local control mode Roughness and other problems, to achieve the effect of improving the voltage qualification rate, increasing the equipment utilization rate, and optimizing the grid power flow

Pending Publication Date: 2019-03-22
JIAXING HENGCHUANG ELECTRIC EQUIP
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Problems solved by technology

At present, the bus voltage and total reactive power limit settings given by the dispatcher are offline indicators, and the AVC system of the power station cannot dynamically obtain the real-time indicators given by the main network, resulting in a relatively rough local control mode of the AVC system of the power station, and a low voltage qualification rate. High, a large amount of reactive equipment capacity has not been effectively utilized

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  • Automatic voltage control-based distribution network and distributed photovoltaic power plant control method
  • Automatic voltage control-based distribution network and distributed photovoltaic power plant control method
  • Automatic voltage control-based distribution network and distributed photovoltaic power plant control method

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[0029] The present invention will be further described below in conjunction with specific examples.

[0030] In the following embodiments, unless otherwise specified, the involved devices, modules, terminals, etc. are all applications of corresponding products in the prior art. Distribution network and distributed photovoltaic power station control method based on automatic voltage control, including

[0031] Distribution network AVC system;

[0032] Photovoltaic power station AVC system, there are at least two photovoltaic power station AVC systems, and any photovoltaic power station AVC system exchanges information with the distribution network AVC system through the uplink bus, downlink busbar;

[0033] The AVC system of the photovoltaic power station counts the statistical information of the current reactive power compensation capacity that can be switched on / off in the photovoltaic power station in real time and uploads it to the AVC system of the distribution network th...

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Abstract

The invention discloses an automatic voltage control-based distribution network and distributed photovoltaic power plant control method. With the method adopted, the reactive power and voltage fluctuation of a photovoltaic power station are effectively restrained, grid power flow is optimized, a voltage qualification rate is raised, an equipment utilization rate is increased, network loss is reduced, and the safety and economic operation of a power grid system is realized. According to the method, the connection of software functions can be realized with no additional hardware device needed, and green loss reduction and energy saving are realized genuinely.

Description

technical field [0001] The invention relates to grid detection and management technology, in particular to a distribution network and distributed photovoltaic power station control method based on automatic voltage control. Background technique [0002] In recent years, my country's distributed photovoltaic power generation has achieved rapid development. Photovoltaic power generation is an effective way to utilize solar energy. With the large-scale distributed photovoltaic power generation system and multi-point access to the distribution network, its impact on the operation control and dispatch management of the distribution network has gradually become prominent. Among them, reactive power and voltage Control issues are one of the more obvious ones. The voltage and reactive power control of many photovoltaic power plants in China is generally through the AVC system inside the photovoltaic power plant to automatically adjust the voltage of the grid-connected point and the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/50H02J3/24H02J3/18
CPCH02J3/383H02J3/18H02J3/24H02J3/50H02J2203/20Y02E10/56Y02E40/30
Inventor 陆海强王金跃姚敏钱进周武郭振王冬林范云涛周竹菁卢俊杰
Owner JIAXING HENGCHUANG ELECTRIC EQUIP
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