智能微电网分布式云储能系统安全稳定控制

Security and Stability Control of Distributed Cloud Energy Storage System in Smart Microgrid

摘要:

针对目前智能微电网分布式云储能系统运行架设成本较高且难寻行之有效整体控制规律的问题，引入一种基于观测器的 控制器设计方法，用以处理数学模型体现为具有范数有界时变参数不确定性的一类分段式储能系统。通过采用广义分段仿射Lyapunov函数、投影定理以及几个基本引理，提出了对于由所设计控制器构成的闭环系统基于观测器且满足鲁棒 性能指标的反馈控制器设计方法。通过求解一组包含参变量的LMIs，可以得到保证广义分段仿射系统具有 性能的反馈控制器增益和观测器增益，数值仿真得到干扰抑制度 =6.5896，通过将云储能供电系统与传统电力系统进行比较，在证明所提设计方法有效性的同时也验证了该方法的卓越性。

Abstract:

In order to solve the problem that the cost of operation and erection of distributed cloud energy storage system in smart microgrid is high and it is difficult to find an effective overall control law, an observer-based controller design method is introduced to deal with a class of piecewise energy storage system with norm-bounded time-varying parameter uncertainties. By using the piecewise-affine singular Lyapunov functions combined with Projection lemma and some basic lemmas, an approach of designing observer-based robust feedback controller is given, the conclusions ensure the system possessing performance. It is shown that the controller gains can be obtained by solving a family of LMIs parameterized by scalar variables. We get the feedback controller gain and observer-based controller gain which can ensure the stability of systems, but also guarantee the performance of the piecewise-affine singular systems. The numerical simulation results show that the interference rejection is 6.5896. By comparing the cloud energy storage power supply system with the traditional power system, the effectiveness of the proposed design method is verified and the superiority of the method is also verified.