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A Distributed Battery Energy Storage System Scheduling Operation Method Considering Voltage Regulation

A technology of battery energy storage system and voltage regulation, which is applied in the direction of flexible AC power transmission system, battery circuit device, collector, etc., to achieve the effect of solving the problem of bus voltage exceeding the limit

Active Publication Date: 2018-12-28
江苏云上电力科技有限公司
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  • Application Information

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Problems solved by technology

However, how to carry out the corresponding scheduling operation of distributed energy storage is still a problem worthy of research

Method used

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  • A Distributed Battery Energy Storage System Scheduling Operation Method Considering Voltage Regulation

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Embodiment Construction

[0029] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] A method for dispatching and operating a distributed battery energy storage system considering voltage regulation, the flow chart of which is shown in figure 1 As shown, the specific steps are as follows:

[0031] S10, the battery energy storage dispatching system program starts;

[0032] S11. Data collection: devices installed on busbars, photovoltaic power generation, loads, battery energy storage systems, and voltage regulation equipment collect data and collect it into the controller;

[0033] S12. Judging the bus voltage V bus Whether the limit is exceeded: if V bus >Maximum voltage reference V ref_max (step S121), then enter step S13 (overvoltage adjustment flow process); if V bus ref_min , or the system is in the peak load state (Peak_Load=1) (step S122), then enter S14 (low voltage regulation and p...

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Abstract

The invention discloses a distributed battery energy storage system dispatching operation method of considering voltage regulation. The method comprises the following steps of (1) carrying out data collection; (2) judging whether bus voltage V<bus> is over the limit or not, if the bus voltage is greater than a maximum voltage reference value V<ref-max>, entering the step (3), and if the bus voltage is smaller than a minimum voltage reference value V<ref-min> or the system is in a peak load condition Peak-Load=1, entering the step (4); (3) carrying out an overvoltage regulation process; (4) carrying out low voltage regulation and peak load reduction processes; (5) carrying out an instruction sending link of a controller, sending a control instruction to voltage regulating equipment or a battery energy storage system by the controller and enabling the voltage regulating equipment or the battery energy storage system to start a corresponding action; and (6) returning to the step (1) and observing the control effect of the bus voltage. The bus voltage is regulated through battery energy storage charging and discharging dispatching, the out-of-limit problem of the bus voltage is solved, and mutual optimization of the voltage regulating equipment and the battery energy storage system and a photovoltaic power generation system is achieved.

Description

technical field [0001] The invention relates to a dispatching operation method of a distributed battery energy storage system considering voltage regulation under high photovoltaic penetration rate, and belongs to the technical field of energy management. Background technique [0002] In the distribution network, the installation of grid-connected photovoltaics has grown significantly. Under the high penetration rate of photovoltaics, a large amount of reverse active power may lead to an increase in voltage levels, which will cause a potential crisis in the distribution system. Conventional voltage control devices such as on-load tap changers and voltage regulators are usually used to regulate voltage within the normal range. However, this voltage regulation technology will shorten the life cycle due to repeated regulation in the context of high-permeability photovoltaic applications. Therefore, an improved voltage regulation method is needed to solve the overvoltage proble...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/32H02J7/35
CPCH02J3/32H02J7/35Y02E10/56Y02E40/10Y02E70/30
Inventor 李明轩
Owner 江苏云上电力科技有限公司
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