WenChuan Wu

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This paper proposes a fully distributed reactive power optimization algorithm that can obtain the global optimum of non-convex problems for distribution networks without a central coordinator. Second-order cone (SOC) relaxation is used to achieve exact convexification. A fully distributed algorithm is then formulated corresponding to the given division of(More)
The Lagrange multiplier-based method is an effective network parameter error identification method. However, two full matrices with high-dimensions are involved in the calculation procedure; these create huge computational burdens for large-scale power systems. To solve this problem, a fast solution is proposed in this paper, where special treatment(More)
-The branch flow based optimal power flow (OPF) problem in radially operated distribution networks can be exactly relaxed to a second order cone programming (SOCP) model without considering transformers. However, the introduction of nonlinear transformer models will make the OPF model non-convex. This letter presents an exact linearized transformer’s OLTC(More)
Spinning reserve allocation is a critical problem for active power dispatch with large-scale wind power penetration. A risk-based reserve allocation method that accounts multiple control sub-area coordination is given in this paper. And a multi-objective optimization model is constructed to schedule the spinning generation reserve for online active power(More)
This paper describes a fully distributed power dispatch method that can achieve fast frequency recovery and minimal generation cost for autonomous microgrids. The method is comprised of two stages. In the first stage, a subgradientbased consensus algorithm is used to recover frequency. The equal increment rate criteria is incorporated into this algorithm to(More)
With the development of smart grid future electric grids will operate in an environment where there are increasing renewables, demand responses, and energy storage. Latest information and communication technologies will be deployed in future smart grids to facilitate the transformation. Next generation control centers (NGCC) need enhanced and new(More)