A DC network equivalent for adequacy evaluation of interconnected systems
A DC network equivalent for adequacy evaluation of interconnected systems
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DOI：
10.1016/j.epsr.2012.12.014
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发表时间：
2013-04
影响因子：
3.9
通讯作者：
J. Nahman;M. Djordjevic
中科院分区：
文献类型：
--
作者：
J. Nahman;M. Djordjevic
本文提出了一个直流等值网络的近似互联系统的充分性评估所考虑的系统。通过将所有源总线并联以获得单个源总线来构建等效网络。然后将这种方法构造的网络转化为一个只含有等效电源母线和互连母线的等效网络，并与所研究的系统进行比较。等效源的相关状态的数量被限制为向相邻系统提供不超过商定值或互连线的总负载能力的紧急支持的状态。在近似系统与输电线路停电的意外事件建模由一个单一的等效源状态，并通过修改根据这些意外事件的概率的等效网络的导纳。以这种方式形成的等效网络具有简单的结构和减少的状态数相比，原始网络，这大大减少了计算负担，在考虑中的系统的充分性的评估。所提出的模型的应用程序上证明了两个著名的系统。
This paper presents a DC equivalent network for the approximation of interconnected systems in the adequacy evaluation of the system under consideration. The equivalent network is built by parallel connecting all source buses to obtain a single source bus. The network constructed in such a way is than transformed in an equivalent network containing only equivalent source bus and the interconnection buses to the system under investigation. The number of relevant states of the equivalent source is constrained to these that provide the emergency support to the neighboring system not exceeding the agreed value or the total loading capacity of the interconnection lines. The contingencies in the approximated system associated with transmission line outages are modeled by a single equivalent source state and by modifying the admittances of the equivalent network in accordance with the probabilities of these contingencies. The equivalent network formed in such a way has a simple structure and a reduced number of states when compared to the original network, which considerably reduces the computational burden in the evaluation of the adequacy of the system under consideration. The application of the proposed model is demonstrated on two well-known systems.