US 12,340,429 B2
Distributed energy storage planning method and system for power distribution network
Chuanliang Zhang, Dongguan (CN); Haitao Li, Dongguan (CN); Zhiyang Liu, Dongguan (CN); Jinrun Huang, Dongguan (CN); Chongzhi Zhai, Dongguan (CN); Wei Du, Dongguan (CN); Xiaofei Wan, Dongguan (CN); Tianhang Wang, Dongguan (CN); Zhirong Mai, Dongguan (CN); Huifang Zheng, Dongguan (CN); Jiaying Feng, Dongguan (CN); Wenhui Huang, Dongguan (CN); Jinjiang Yu, Dongguan (CN); and Jianming Chen, Dongguan (CN)
Assigned to DONGGUAN POWER BUREAU OF GUANGDONG POWER GRID CO., LTD., Dongguan (CN)
Appl. No. 18/847,592
Filed by DONGGUAN POWER BUREAU OF GUANGDONG POWER GRID CO., LTD., Dongguan (CN)
PCT Filed Dec. 5, 2022, PCT No. PCT/CN2022/136467
§ 371(c)(1), (2) Date Sep. 16, 2024,
PCT Pub. No. WO2023/173817, PCT Pub. Date Sep. 21, 2023.
Claims priority of application No. 202210255517.X (CN), filed on Mar. 16, 2022.
Prior Publication US 2025/0111450 A1, Apr. 3, 2025
Int. Cl. G06Q 50/06 (2024.01); G06Q 10/0631 (2023.01); H02J 3/38 (2006.01)
CPC G06Q 50/06 (2013.01) [G06Q 10/0631 (2013.01); H02J 3/381 (2013.01); H02J 2203/20 (2020.01)] 8 Claims
OG exemplary drawing
 
1. A distributed energy storage planning method for a power distribution network, comprising:
step S1: setting a mathematical indicator for quantitatively evaluating superiority and inferiority of construction positions of distributed energy storage assemblies as a location evaluation indicator in a distribution area of a distributed power supply;
step S2: planning an optimal laying path of the distributed energy storage assemblies in a planning area based on the location evaluation indicator, and achieving a planning benefit of the construction positions of the distributed energy storage assemblies in the planning area being globally optimal, wherein the optimal laying path is characterized as a path formed by sequentially connecting construction positions of the distributed energy storage assemblies in the planning area; and
step S3: constructing the distributed energy storage assemblies according to the optimal laying path and connecting the distributed energy storage assemblies to the power distribution network to perform an energy storage operation, wherein an energy storage priority is set for the energy storage operation with the optimal laying path as a criterion to achieve orderly energy storage of the distributed energy storage assemblies by the distributed power supply in the power distribution network,
wherein setting the mathematical indicator for quantitatively evaluating the superiority and the inferiority of the construction positions of the distributed energy storage assemblies as the location evaluation indicator comprises:
quantizing a construction cost of the distributed energy storage assemblies as a cost evaluation indicator, and quantizing an energy storage benefit of the distributed energy storage assemblies as the benefit evaluation indicator; and
setting adaptive weights for the cost evaluation indicator and the benefit evaluation indicator based on a production year of the distributed energy storage assemblies, and performing weighted summation on the cost evaluation indicator and the benefit evaluation indicator based on the adaptive weights to obtain the location evaluation indicator,
wherein quantizing the construction cost of the distributed energy storage assemblies as the cost evaluation indicator comprises:
quantizing a single construction cost and a construction cost of an energy storage line of each of the distributed energy storage assemblies, and summing the single construction cost and the construction cost of the energy storage line of each of the distributed energy storage assemblies to obtain a construction cost of each of the distributed energy storage assemblies, wherein a calculation formula of the construction cost is as follows:
fi=A+a*√(xi−x0)2+(yi−y0)2;
wherein in the formula, fi is characterized as a construction cost of an i-th distributed energy storage assembly, A is characterized as a single construction cost, a is characterized as a construction cost of a unit length of an energy storage line, xi and yi are characterized as an abscissa value and an ordinate value of a positional coordinate of the i-th distributed energy storage assembly, respectively, x0 and y0 are characterized as an abscissa value and an ordinate value of a positional coordinate of the distributed power supply, respectively, √(xi−x0)2+(yi−y0)2 is characterized as a length of an energy storage line between the i-th distributed energy storage assembly and the distributed power supply, and a*√(xi−x0)2+(yi−y0)2 is characterized as a construction cost of the energy storage line of the i-th distributed energy storage assembly; and
summing construction costs of all the distributed energy storage assemblies to obtain the cost evaluation indicator, wherein a calculation formula of the cost evaluation indicator is as follows:

OG Complex Work Unit Math
wherein in the formula, F is characterized as the cost evaluation indicator, n is characterized as a total number of distributed energy storage assemblies, i is a measurement constant without a substantive meaning, and the energy storage line is characterized as being located between the distributed power supply and the distributed energy storage assemblies so that the distributed power supply performs discharge and energy storage on the distributed energy storage assemblies.