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首页> 外文会议>2015 5th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies >Complex network theory based recognition of power grid key line
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Complex network theory based recognition of power grid key line

机译：基于复杂网络理论的电网关键线路识别

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摘要

The probability of power system cascading failure is very small, but once happened, its influence is disastrous. There are a few key branches play an important role in the process of cascading failures in power system. The identification of these key branches is of great significance to the safe and stable operation of power system. Power system transmits active power and reactive power at the same time. Different from the full range of active power, the reactive power has the characteristic of regional decoupling. The impact is generally limited in the vicinity of fault branch, so this paper temporarily only considers active power. Firstly, in this paper, the only link line between two subsystems is detected. If the branch is the only link line, it is the key branch. If it is not, then make the power flow of the fault branch as the basic parameters, and reduce the active power flow in the relevant branch of the fault branch to the fault branch by the power grid topology. Then get the grid key branch identification evaluation indicator. Finally apply the evaluation indicator in practical example of IEEE 39 bus system, and the result conform to the actual operation characteristics of IEEE 39 bus system and prove the correctness and effectiveness of the method.
机译：电力系统级联故障的可能性很小，但是一旦发生，其影响是灾难性的。在电力系统的级联故障过程中，有几个关键分支发挥着重要作用。这些关键分支的识别对电力系统的安全稳定运行具有重要意义。电力系统同时传输有功功率和无功功率。与有功功率的全部范围不同，无功功率具有区域解耦的特征。影响通常限制在故障分支附近，因此本文暂时仅考虑有功功率。首先，在本文中，检测到两个子系统之间的唯一链接线。如果分支是唯一的链接线，则它是关键分支。如果不是，则将故障分支的潮流作为基本参数，并通过电网拓扑将故障分支的相关分支中的有功功率减小到故障分支。然后获得网格键分支标识评估指标。最后将评价指标应用于IEEE 39总线系统的实例中，结果符合IEEE 39总线系统的实际运行特性，证明了该方法的正确性和有效性。

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