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Photovoltaic power generation automatic voltage control method

A photovoltaic power generation and automatic voltage technology, applied in photovoltaic power generation, wind power generation, AC network voltage adjustment and other directions, can solve the problem of not meeting the development requirements of Beijing power grid and ignoring automatic voltage control of new energy stations

Active Publication Date: 2019-02-19
STATE GRID BEIJING ELECTRIC POWER +1
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Problems solved by technology

The traditional automatic voltage control system does not consider the automatic voltage control of new energy stations such as photovoltaic power stations, and cannot meet the development requirements of Beijing Power Grid to accept new energy grid-connected

Method used

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  • Photovoltaic power generation automatic voltage control method
  • Photovoltaic power generation automatic voltage control method
  • Photovoltaic power generation automatic voltage control method

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Embodiment Construction

[0145] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0146] The inventive photovoltaic power generation automatic voltage control method of the present invention includes the following four aspects:

[0147] (1) Voltage control modeling of 110kV and 35kV photovoltaic power plants:

[0148] Since the busbar PAS model does not have grid models for 110kV and 35kV photovoltaic power plants, develop grid models that can read 110kV and 35kV photovoltaic power plants from the SCADA model and splicing them into the PAS model to form a grid including the PAS model and 110kV and 35kV photovoltaic power plants Model; develop the function of AVC modeling for photovoltaic power plants according to the new power grid model; develop the function of calculating the voltage and reactive power sensitivity of photovoltaic power plants to the power grid in real time according to the new power grid model.

[0149] Detailed implementation ...

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Abstract

The invention discloses a photovoltaic power generation automatic voltage control method. The photovoltaic power generation automatic voltage control method includes that voltage control modeling is carried out on 110kV and 35kV photovoltaic power stations, then AVC (automatic voltage control) master stations and AVC substations of the photovoltaic power stations bidirectionally interact with oneanother, global reactive power optimization on the photovoltaic power stations is computed, voltages of photovoltaic power generation collecting regions are quickly automatically controlled, and whole-network reactive power voltage optimization control targets are given by tertiary voltage control in AVC systems of dispatching centers after voltage safety operation of photovoltaic power generationregions is considered and are used as control targets for center bus of photovoltaic collecting regions; reactive power of the various photovoltaic power stations in control regions is controlled bymeans of secondary voltage control on the photovoltaic power generation regions, so that the voltage control targets for the center bus of the photovoltaic collecting regions can be achieved. The photovoltaic power generation automatic voltage control method has the advantages that the photovoltaic power generation automatic voltage control method can adapt to large-scale photovoltaic power generation grid-connected automatic voltage control systems, and automatic closed-loop control can be carried out on voltages of the photovoltaic power stations and accessed power grid regions; a system canaccess 100 closed-loop control photovoltaic power stations.

Description

technical field [0001] The invention relates to a voltage control method, in particular to an automatic voltage control method for photovoltaic power generation. Background technique [0002] The AVC function is an important part of the smart grid dispatching technical support system (hereinafter referred to as the D5000 system). For the convenience of user use and maintenance, the AVC application is required to be a sub-application module of the D5000 system to realize embedded integration. The D5000 platform manages AVC-related applications and processes through the system manager, and provides platform support for "AVC applications", including real-time libraries and related screens. The main body of "AVC application module" is composed of AVC application process and AVC closed-loop control process, and accepts the management of D5000 system manager. The AVC closed-loop control process calls relevant sub-processes to complete the closed-loop control function according to...

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Application Information

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IPC IPC(8): H02J3/38H02J3/16
CPCH02J3/383H02J3/386H02J3/16H02J2203/20Y02E10/56Y02E10/76Y02E40/30
Inventor 徐晓进黄立华周运斌王卫董楠王腾飞董晋阳刘昕
Owner STATE GRID BEIJING ELECTRIC POWER
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