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首页> 外文期刊>IEEE systems journal >Security-Constrained Unit Commitment Problem With Transmission Switching Reliability and Dynamic Thermal Line Rating
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Security-Constrained Unit Commitment Problem With Transmission Switching Reliability and Dynamic Thermal Line Rating

机译：具有传输切换可靠性和动态热线额定值的安全约束单元承诺问题

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摘要

In security-constrained unit commitment (SCUC) problems, one approach to decrease operation costs is using a transmission switching (TS) tool. In SCUC problems with TS, one of the main challenges is that there is no limitation for the number of switching of circuit breakers (CB) in the system. In this article, the reliability of CB is merged into the SCUC problem with the TS and is considered as a limiting factor for switching. With a more reliable CB, the overall reliability of the system will be increased. So, it can be concluded that the reliability of a CB affects the amount of load shedding. Reliability of a CB is a nonlinear equation based on the number of switching in a period. An approach is presented to linearize the switch reliability equation. In this article, the power flow model uses an improved linear ac optimal power flow and a dynamic thermal line rating (DTLR) model, which considers the weather conditions. Other than CB reliability, DTLR in SCUC problems affects the number of switching and, as a result, operation costs will be significantly decreased. The proposed model is empowered by Bender's decomposition and is tested on 6-bus and 118-bus IEEE test systems.
机译：在安全性受限的单位承诺（SCUC）问题中，一种降低运营成本的方法是使用传输切换（TS）工具。在TS的SCUC问题中，主要挑战之一是对系统中断路器（CB）的开关数量没有限制。在本文中，CB的可靠性已与TS合并到SCUC问题中，并被视为切换的限制因素。使用更可靠的断路器，将提高系统的整体可靠性。因此，可以得出结论，断路器的可靠性会影响减载量。 CB的可靠性是一个非线性的方程式，基于一个周期中的切换次数。提出了一种使开关可靠性方程线性化的方法。在本文中，潮流模型使用改进的线性交流最优潮流和动态热线额定值（DTLR）模型，该模型考虑了天气情况。除CB可靠性外，SCUC问题中的DTLR还影响切换次数，结果，运营成本将大大降低。所提出的模型受Bender分解的支持，并在6总线和118总线IEEE测试系统上进行了测试。

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