基于短路电流约束显式线性建模的输电网结构优化

doi:10.19595/j.cnki.1000-6753.tces.191763

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Abstract With the expansion of power grid, the problem of short-circuit current (SCC) in power system has become more and more serious in recent years. Compared with other methods of limiting SCC, transmission switching is more flexible and economical. Based on the physical meaning of node self-impedance, a new idea is proposed to represent the explicit linear relationship between line switching states and SCC constraints by constructing an “adjoint network” in this paper. The “adjoint network” has a similar topology with the original power grid, but the parameters are different. Further, an explicit linear modeling method of SCC constraints is proposed, and a mixed integer linear programming (MILP) model for transmission topology optimization is established. Both of the N-1 security constraints and the SCC constraints are considered in the established MILP model. In view of the difficulty of solving large-scale system problems, a variety of constraint set reduction strategies and methods are also studied, which can effectively reduce the scale of decision space and improve the computational efficiency of the model. Finally, the modified IEEE 30-bus system and IEEE 118-bus system are taken as examples to verify the effectiveness of the proposed model and method.

Key words： Short-circuit current transmission topology optimization optimal transmission switching(OTS) node self-impedance mixed integer linear programming(MILP)

Received: 16 December 2019

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	Li Shaoyan
	Ren Yipei
	Gu Xueping
	Cao Xin
	Yang Xiaodong

Cite this article:

Li Shaoyan,Ren Yipei,Gu Xueping等. Optimization of Transmission Network Structure Based on Explicit Linear Modeling of Short Circuit Current Constraints[J]. Transactions of China Electrotechnical Society, 2020, 35(15): 3292-3302.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.191763 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I15/3292

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