A Method for High-voltage Distribution Network Structure Planning Based on the Optimal Division of Power Supply Units

High voltage distribution network is an important link between transmission and middle voltage distribution network. If a high voltage distribution network fault occurs, the economy and reliability of the whole city distribution system will be seriously affected. To solve this problem, a traditional reconstruction optimization model is improved and a 2-staged reconstruction optimization model is proposed based on an improved particle swarm optimization (PSO) algorithm. The first stage reconstruction only considers the economic goal and the second stage reconstruction needs consider the boundary constrains. The 2-staged method considers the economic benefit and the voltage quality simultaneously. It can achieve the multi goals: meeting actual boundary operation conditions, optimizing the combination of network losses and the number of operation switching. The fault isolation and reconfiguration of an actual distribution network system in Dezhou power grid were simulated. Simulation results validate the rationality and feasibility of the proposed method

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Research on adaptive congestion scheduling method for AC/DC hybrid high voltage distribution network

2021 6th International Conference on Smart Grid and Electrical Automation (ICSGEA) ◽

10.1109/icsgea53208.2021.00018 ◽

2021 ◽

Author(s):

Dehua Liu ◽

Chao Gao ◽

Meini Qi

Keyword(s):

High Voltage ◽

Distribution Network ◽

Voltage Distribution ◽

Scheduling Method

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Research and Application of a Clear Diamond-Shaped Distribution Network Structure

Frontiers in Energy Research ◽

10.3389/fenrg.2021.735294 ◽

2021 ◽

Vol 9 ◽

Author(s):

Liu Shengli ◽

Wu Jun ◽

Xue Longjiang ◽

Wu Di ◽

Lu Haiqing ◽

...

Keyword(s):

Network Structure ◽

Power Supply ◽

Distribution Network ◽

Regional Distribution ◽

Distribution Networks ◽

Ring Network ◽

Medium Voltage ◽

Double Ring ◽

Diamond Type ◽

Supply Reliability

Aiming at the problems of low power supply reliability, poor transfer capacity between stations, and low line utilization in the current distribution network, this paper proposes a diamond-shaped distribution network structure with a clear structure. First, we investigated the typical wiring patterns of medium-voltage distribution networks in Tokyo, Japan, Paris, France, and China’s developed cities, and summarized experience and shortcomings. Secondly, combining the typical wiring patterns of distribution networks in China and abroad, construct a diamond-shaped distribution network structure, and study its adaptability, safety and flexibility, power supply reliability, and economy. Finally, take the transformation of the wiring mode of a regional distribution network in a certain city as an example, compare the use of the diamond-shaped distribution network structure in this article with the use of cable double-ring network wiring, cable “double petal” wiring, and Shanghai diamond-type wiring distribution network grid reconstruction The effect verifies the superiority of the diamond-shaped distribution network structure in this paper.

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