A dispatching method for wide-area distributed energy storage systems considering peak-shaving and voltage-regulating requirements
A distributed energy storage and coordinated dispatching technology, applied in the field of electrical engineering, can solve problems such as insufficient peak regulation capacity, insufficient voltage deviation, single dispatching target, etc.
Active Publication Date: 2021-07-13
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +1
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Problems solved by technology
This solves the technical problems of the existing technology, such as the single scheduling target of the energy storage system, the inability to effectively balance the insufficient peak shaving capacity caused by the large-scale wind power connection, and the excessive voltage deviation caused by long-distance transmission.
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[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0030] Such as figure 2 As shown, a coordinated dispatching method for a wide-area distributed energy storage system considering peak regulation and voltage regulation requirements includes the following steps:
[0031] Step 1: Obtain grid parameters and distributed energy storage parameters.
[0032] The grid parameters include: thermal power unit economic parameters, system technical parameters, wind power unit technical parameters and thermal power technical parameters, and active power data of typical daily wind power and loads and reactive power data ...
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The invention discloses a coordinated dispatching method for a wide-area distributed energy storage system considering peak regulation and voltage regulation requirements, including: obtaining grid parameters and distributed energy storage parameters; and the minimum as the objective function; with conventional thermal power unit constraints, wind power unit constraints, system constraints and battery energy storage system constraints as constraints, a wide-area distributed energy storage system coordination scheduling model considering peak and voltage regulation requirements is established; for the benefit of Faster and more accurate solution of the model, using linearization tools such as the large M method to linearize nonlinear forms such as voltage drop constraints and voltage deviation penalty items in the objective function; finally call the solving tool on the simulation computing platform to The model is solved, and the power system dispatching scheme with distributed energy storage is obtained.
Description
technical field [0001] The invention belongs to the field of electrical engineering, and more specifically relates to a method for coordinating and dispatching a wide-area distributed energy storage system considering the demand for peak regulation and voltage regulation. Background technique [0002] my country's current energy structure is relatively single. The primary energy source is mainly coal power, and the proportion of flexible power sources such as gas-fired power stations is very small. Therefore, the lack of system regulation capacity has caused difficulties in the operation and scheduling of large-scale wind power power systems. According to the consistency of wind power and load fluctuations, the peak-shaving effect of wind power can be divided into three situations: positive peak-shaving, negative peak-shaving and over-peak-shaving. In the "Three North" regions with abundant wind resources in my country, the principle of "setting power with heat" for heating ...
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IPC IPC(8): H02J3/00H02J3/28H02J3/12
CPCH02J3/008H02J3/12H02J3/28H02J2203/20Y02E10/76Y02E40/10
Inventor 饶宇飞李相俊甘伟杨海晶李朝晖张景超贾学翠李程昊滕卫军
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST