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Comprehensive operation control system and method for battery energy storage system in high-permeability photovoltaic distribution network

A technology of battery energy storage system and high penetration rate, which is applied in the field of power grid, can solve the problems of lack of comprehensive consideration of voltage control and economic optimization, and achieve the effect of improving voltage safety of distribution network, increasing service life and realizing economy

Active Publication Date: 2019-07-09
SHANDONG UNIV
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  • Application Information

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Problems solved by technology

[0007] To sum up, the existing battery energy storage system operation control strategies lack the comprehensive consideration of voltage control and economic optimization.

Method used

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  • Comprehensive operation control system and method for battery energy storage system in high-permeability photovoltaic distribution network
  • Comprehensive operation control system and method for battery energy storage system in high-permeability photovoltaic distribution network
  • Comprehensive operation control system and method for battery energy storage system in high-permeability photovoltaic distribution network

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Embodiment Construction

[0055] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0056] It should be noted that the terminology used here is only used to describe specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0057] Terminology Explanation Section:

[0058] 1) Battery state of charge

[0059] The state of charge of ...

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Abstract

The invention discloses a comprehensive operation control system and method for a battery energy storage system. The comprehensive operation control method comprises two sub strategies of voltage control and economic optimization, wherein voltage control, by taking voltage out-of-limit prevention as the target, comprises the steps of establishing an evaluation matrix comprising battery residual life, SoC state, voltage sensitivity characteristic, operational expenditure and the like, and selecting one with the maximum comprehensive index for controlling; economic optimization, by taking safeguarding of voltage safety as the premise, comprises the steps of reducing influence of battery action to a node voltage as far as possible by combination with power utilization peak and valley electric charges, and selecting one with the minimum of voltage sensitivity factor and operational expenditure and the best battery state for controlling. By adoption of the method, the problem of voltage out of limit caused by high-permeability photovoltaic and overhigh power utilization peak load can be solved; and in addition, peak clipping and valley filling is realized, the safety of the power distribution network is improved, profits is realized under the policy of time-of-use electricity price, and benefits of energy storage installation users are improved.

Description

technical field [0001] The invention relates to the field of power grid technology, in particular to a comprehensive operation control system and method for a battery energy storage system in a high-permeability photovoltaic distribution network. Background technique [0002] In today's world, the problem of environmental degradation caused by burning fossil fuels is becoming more and more serious. The development of renewable and clean energy has received widespread attention, and more and more distributed power sources are connected to the distribution network. Photovoltaic power generation (Photovoltaic power generation), as an efficient small-capacity power generation technology, has been rapidly developed and promoted. Photovoltaic power generation process is simple, does not include mechanical rotating parts, does not consume fuel, does not emit any substances including greenhouse gases, no noise, no pollution, and solar energy resources are widely distributed, inexhau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/32H02J3/12H02J3/00
CPCH02J3/008H02J3/12H02J3/32H02J2203/20Y02E10/56Y02E40/10Y02E70/30
Inventor 陈健李佳琪
Owner SHANDONG UNIV
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