A Method for Ensuring a Load Aggregator’s Power Deviations Are Safe for Distribution Networks

A Method for Ensuring a Load Aggregator’s Power Deviations Are Safe for Distribution Networks
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确保负载聚合器功率偏差对配电网络安全的方法

DOI:
10.1016/j.epsr.2020.106781
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发表时间:
2020
影响因子:
3.9
通讯作者:
Mathieu, Johanna L.
Mathieu, Johanna L.
中科院分区:
工程技术3区
文献类型:
--
作者:
Ross, Stephanie Crocker;Mathieu, Johanna L.

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本文提出了一种约束第三方聚合器的控制行为,以确保配电网的安全运行的方法。我们设计了一个安全约束,限制了聚合器可以在网络中引起的功率偏差的大小。约束的上限是对网络不安全的最小偏差向量的大小,这是通过解决一组优化问题来计算的。我们提出了两个版本的安全约束,2-范数和1-范数的基础上,并发现都不能保证比其他的保守。我们还推导出条件下,一个优化问题可以消除的一组问题是必要的解决。我们将这些条件应用于案例研究中,并将测试网络的问题数量减少了89%,连接电容器组的测试网络减少了67%。
This paper proposes a method for constraining the control actions of third-party aggregators to ensure safe operation of the distribution network. We design a safety constraint that limits the size of the deviations in power that an aggregator can cause across a network. The constraint’s upper limit is the size of the minimum-sized vector of deviations that is unsafe for the network, which is computed by solving a set of optimization problems. We propose two versions of the safety constraint, based on the 2-norm and 1-norm, and find neither is guaranteed to be less conservative than the other. We also derive conditions under which an optimization problem can be eliminated from the set of problems that are necessary to solve. We apply these conditions in a case study and reduce the number of problems by 89% for the test network and 67% for the test network with capacitor banks connected.
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