Optimal site selection and capacity determination method of energy storage power station in active distribution network
A technology for site selection, fixed capacity, and energy storage power stations, which can be used in energy storage, photovoltaic power generation, electrical components, etc., and can solve problems such as poor applicability
Active Publication Date: 2019-06-25
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO +1
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[0022] The purpose of the present invention is to overcome the shortcomings of the poor applicability of the active power-voltage sensitivity calculation method in the prior art, and provide an optimal site selection and capacity determination of energy storage power stations in active distribution networks containing distributed energy method
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[0068] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0069] Such as figure 1 The illustrated embodiment is a method for optimal site selection and capacity determination of an energy storage power station in an active distribution network, including the following steps:
[0070] (1-1) Obtain load data, photovoltaic output data, system impedance, various operating modes and days of the system from the EMS system of the source distribution network; initialize the population size, convergence conditions, crossover probability and mutation probability in the genetic algorithm;
[0071] (1-2) Set the maximum number M of energy storage nodes installed, and the current number of energy storage access n=1;
[0072] (1-3) Calculate the static comprehensive sensitivity of nodes and the comprehensive sensitivity of node timing, and use the node with the largest timing comprehensive sensitivity as the nth e...
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The invention discloses an optimized locating and sizing method of an energy storage power station of an active power distribution network. A conventional sensitivity method is improved by employing a time sequence analytical method, a time sequence comprehensive sensitivity calculation method considering the operation mode of the power distribution network is proposed, and a time sequence sensitivity index of each node is regarded as the basis for energy storage locating. According to the method, optimized locating of energy storage is realized, the influence of the node with high sensitivity and qualified voltage level on the locating results is reduced, and the voltage of the node is optimized without influencing the voltage of other nodes in an unfavorable way.
Description
technical field [0001] The invention relates to the field of optimal configuration of energy storage in a distribution network, in particular to a method for optimal location selection and capacity determination of an energy storage power station in an active distribution network containing distributed energy. Background technique [0002] my country's power generation structure is changing from centralized large-scale power generation to the coexistence of centralized and distributed generation (Distributed Generation, DG). Distributed power generation is usually connected to the power distribution network due to its low power generation voltage level. The access of DG changes the distribution network from a single power supply network to a multi-power supply network. Due to the randomness of DG output, it will have a significant impact on the system voltage when the penetration rate is high, and it is easy to cause the system voltage to exceed the limit. The energy storag...
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IPC IPC(8): H02J3/38H02J3/32
CPCH02J3/32H02J3/383H02J2203/20Y02E10/56Y02E70/30
Inventor 张静炜殷伟斌冯晓科严耀良金山红董成明李振坤陈思宇符杨赵巍杨晓雷方江晓屠一艳
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO