﻿ 基于负荷转移模型的配网合环可行性研究 The Feasibility Research on Distribution Network Closed Loop Based on the Load Transfer Model

Journal of Electrical Engineering
Vol.05 No.02(2017), Article ID:20867,10 pages
10.12677/JEE.2017.52018

The Feasibility Research on Distribution Network Closed Loop Based on the Load Transfer Model

Qi Yin1, Rui Ding1, Yongchun Zhao2, Yanfen Liu2, Xiaolin Liu3

1State Grid Deyang Electric Power Supply Company, Deyang Sichuan

2Beijing Join Bright Digital Power Technology Co., Ltd., Beijing

3State Grid (Beijing) Energy Conservation Design and Research Institute Co. Ltd., Beijing

Received: May 17th, 2017; accepted: Jun. 3rd, 2017; published: Jun. 6th, 2017

ABSTRACT

In order to improve the success rate of power distribution without switching power distribution, this paper presents mathematical model of load transfer in distribution network. The differences of voltage of amplitude and phase angle on both sides are calculated by the power flow. According to the size of the difference, we can determine whether the operation can be carried out, thereby improving the success rate of operation.

Keywords:Power Flow, Surge Current, Closing Loop

1国网四川省电力公司德阳供电公司，四川 德阳

2北京中恒博瑞数字电力科技有限公司，北京

3国网(北京)节能设计研究院有限公司，北京

1. 引言

2. 配网合环原理

2.1. 城市配电网常用结构

2.2. 负荷模型

Figure 1. The diagram of 220 kV different network

(a) (b)

Figure 2. The diagram of 220 kV network

(a) (b)

Figure 3. The diagram of the same plant

(a) (b)

Figure 4. The diagram of the below of 220 kV main transformer

(1)

(2)

2.3. 配网合环判据

(3)

2.4. 合环冲击电流模型

(4)

(5)

Figure 5. The load model of distribution network

Figure 6. The diagram of closed loop

Figure 7. The closed loop of network

Figure 8. The diagram of Davidon equivalent circuit

(6)

(7)

3. 潮流计算

(8)

(9)

Figure 9. The diagram of P-Q power flow

4. 算例分析

Figure 10. The diagram of Typical wiring of Deyang

Figure 11. The diagram of surge current of closed loop

Figure 12. The block diagram of closed loop measurement

Table 1. The information of current of closed loop of Zhaqiaodong

Table 2. The information of voltage of closed loop of Zhaqiaodong

Table 3. The information of voltage is obtained by measuring

5. 结论

The Feasibility Research on Distribution Network Closed Loop Based on the Load Transfer Model[J]. 电气工程, 2017, 05(02): 150-159. http://dx.doi.org/10.12677/JEE.2017.52018

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