﻿ 大规模直购电交易的重要输电路径分析 Important Transfer Power Lines Analysis under Large Scale Direct Electricity Purchases

Journal of Electrical Engineering
Vol.04 No.02(2016), Article ID:17784,6 pages
10.12677/JEE.2016.42012

Important Transfer Power Lines Analysis under Large Scale Direct Electricity Purchases

Lili Liu1, Jie Yu1, Bike Xue2

1School of Electrical Engineering, Southeast University, Nanjing Jiangsu

2China Electric Power Research Institute, Nanjing Jiangsu

Received: May 24th, 2016; accepted: Jun. 11th, 2016; published: Jun. 14th, 2016

ABSTRACT

It can stimulate the potential of electric power market to carry out the direct electricity purchase by large consumers, and it is a breakthrough in the electric power industry marketization. Large scale direct electricity purchases are generally inter-district inter-provincial long-distance power transactions and affect the operation mode and power flow calculation of power grid. Transfer power lines analysis of the direct electricity purchase by large consumers will provide support for the stability analysis of the electric power grid operation and congestion management of the power transmission branches. A sensitivity analysis method combined with breadth first search is proposed in this paper. Breadth first search method can search out all transfer power lines of the direct electricity purchases, and then breadth first search method combined with sensitivity analysis can get the sensitivity of the direct electricity purchase by large consumers on the transfer power lines. For large scale direct electricity purchases, the method proposed in this paper can be used to calculate the stack sensitivity of a plurality of direct electricity purchases on the transfer power lines. In this paper, based on the IEEE 118 nodes system as an example for example analysis, the results show the rationality and validity of the proposed method.

Keywords:Direct Power Purchase by Large Consumers, Breadth First Search, Sensitivity Analysis, Transfer Power Lines

1东南大学电气工程学院，江苏 南京

2中国电力科学研究院，江苏 南京

1. 引言

2. 灵敏度分析原理

(1)

(2)

xk为支路k的电抗；

X为直流潮流中B0的逆矩阵，B0为用1/x为支路建立的n × n阶电纳矩阵，Xmi为矩阵X中的第m行第i列元素，Xmj为矩阵X中的第m行第j列元素，Xni为矩阵X中的第n行第i列元素，Xnj为矩阵X中的第n行第j列元素；

Mk为支路k (始末节点m，n)的节点-支路关联矢量，

ei为单位列矢量，只在节点i所对应位置有非零元素1，其余都是零元素；

ej为单位列矢量，只在节点j所对应位置有非零元素1，其余都是零元素。

3. 结合广度优先搜索的灵敏度分析法

3.1. 广度优先搜索理论

1) 首先访问某指定的起始节点并且标记其已访问过；

2) 然后由出发访问与其相邻接的其他节点，记为第一层节点，并均标记为已访问过；

3) 然后再按照，的次序，访问每个节点的所有未被访问过的邻接节点，记为第二层节点，并均标记为已访问过；

4) 下一步再从这些节点出发访问与这些节点相邻的没有被访问的节点，并标记为已访问过；

5) 如此下去，直到访问到终止节点为止。

3.2. 结合广度优先搜索的灵敏度分析法

Figure 1. Sketch map of breadth first search

1) 从发电机节点 开始搜索到邻接节点，标记为已访问，并计算灵敏度

2) 然后再搜索1)中的未被访问过的邻接节点，标记为已访问，并计算灵敏度

3) 如此下去，直到搜索到大用户节点 为止。

(3)

(4)

(5)

4. 算例

Figure 2. Direct power purchase transfer power lines flowchart

Table 1. Transfer power lines stack sensitivity ranking

Figure 3. Direct power purchase transfer power lines

5. 小结

Important Transfer Power Lines Analysis under Large Scale Direct Electricity Purchases[J]. 电气工程, 2016, 04(02): 91-96. http://dx.doi.org/10.12677/JEE.2016.42012

1. 1. 夏清, 白杨, 钟海旺, 等. 中国推广大用户直购电交易的制度设计与建议[J]. 电力系统自动化, 2013, 37(20): 1-7.

2. 2. 陈皓勇, 张森林, 张尧. 电力市场中大用户直购电交易模式及算法研究[J]. 电网技术, 2008, 32(21): 85-90.

3. 3. 胡江溢, 陈西颖. 对大用户直购电交易的探讨[J]. 电网技术, 2007, 31(24): 40-45.

4. 4. Bialek, J. (1996) Tracing the Flow of Electricity. IEE Proceedings of Generation, Transmission and Distribution, 143, 313-320. http://dx.doi.org/10.1049/ip-gtd:19960461

5. 5. Kirschen, D., Allan, R. and Strbac, G. (1997) Contributions of Individual Generators to Loads and Flows. IEEE Transactions on Power Systems, 12, 52-60. http://dx.doi.org/10.1109/59.574923

6. 6. 李春燕. 潮流跟踪模型和算法及其在输电阻塞管理中的应用[D]: [博士学位论文]. 重庆: 重庆大学电气工程学院, 2008.

7. 7. 汤奕, 袁飞, 周霞, 等. 基于电气剖分方法的阻塞费用分摊[J]. 电力系统自动化, 2007, 31(19): 14-17.

8. 8. 田伟帅, 于继来. 基于电气剖分的转运电能损失估算方法[J]. 电网技术, 2010, 34(3): 123-128.

9. 9. 罗键. 系统灵敏度理论导论[M]. 西安: 西北工业大学出版社, 1990: 16-22.

10. 10. 张伯明, 陈寿孙, 严正. 高等电力网络分析[M]. 北京: 清华大学出版社, 2007: 202-214.

11. 11. 杨智明. 图的广度优先搜索遍历算法的分析与实现[J]. 农业网络信息, 2009(12): 136-137.