利用负荷转移方法提升电网输电能力

doi:10.3969/j.issn.1000-7229.2015.02.016

摘要/Abstract

摘要：

输电断面潮流超控制极限会限制电网的输电能力，而利用变电站之间的联络通道转带负荷是电网实际运行过程中解决潮流越限的常用方法。从现场运行经验出发，在介绍变电站之间负荷关联特性的基础上，以灵敏度系数为切入点，系统地阐述利用负荷转移方法提升电网输电能力的基本原理，推导变电站之间负荷转移灵敏度系数的简化计算公式，并利用启发式搜索算法的推演思路，提出负荷转移方法控制策略。实际算例表明：提出的负荷转移方法具有计算速度快、操作简单实用等优点，在潮流控制过程中能有效地消除潮流越限现象，达到提升电网输电能力的目的。

关键词: 负荷转移方法, 输电能力, 输电断面, 灵敏度系数, 启发式搜索

Abstract:

If the power flow of transmission section exceeds the control limits, it will restrict the transmission capacity of power grid, using liaison channel to transfer power load between substations is a common way to solve this problem in actual power system. This paper introduced the relevance characteristics of loads between substations base on field operating experience, systematically discussed the basic principles that the load transfer method was used to improve grid transmission capacity, deduced the sensitivity coefficients calculation formula of load transfer between substations in a simplify form and proposed the control strategy of load transfer method with heuristic searching algorithms. The actual examples show that the proposed load transfer method has advantages of fast calculation, simple and practical operation, etc., and can effectively solve the over-limit problem during power flow control process, which can enhances the transmission capacity of power grid.

Key words:

load transfer method, transmission capacity, transmission section, sensitivity coefficient, heuristic search

赖平，周想凌，石一辉. 利用负荷转移方法提升电网输电能力[J]. 电力建设, 2015, 36(2): 96-100.

LAI Ping，ZHOU Xiangling，SHI Yihui. Power Transmission Capacity Improvement Based on Load Transfer Method[J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(2): 96-100.

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