大规模风电并网后的电力系统广域增益调度控制器设计

发布时间：2018-03-22 16:38

本文选题：大规模风电　切入点：广域控制器　出处：《中国电机工程学报》2014年22期 　论文类型：期刊论文

【摘要】：针对风力发电的不确定性以及高渗透率下的大规模风电的远距离输送对系统区域阻尼的带来的负面影响,提出一种能适用于系统运行方式发生较大变化(如风电场风速急剧变化等)的广域控制器设计方法。采用时滞线性参数变化方法对含风电的电力系统进行建模,并将整个参数变化范围进行网格划分,再分别进行控制器设计,然后采用三角隶属函数制定调度准则并进行控制器权值分配,从而构造出满足全部参数变化范围的广域增益调度控制器。对算例的时域仿真表明,所提出的广域控制器设计方法对于系统运行范围发生较大变化的情况仍然具有较理想的效果,与传统的极点配置方法相比具有更强的鲁棒性;与经典的鲁棒控制方法与非线性控制方法相比,具有控制器阶数低、设计方法简单等优点,易于工程实现。所设计的控制器计及了电力系统变时滞的特点,相比传统的Pade近似处理时滞的方法有着更低的保守性。
[Abstract]:In view of the uncertainty of wind power generation and the negative effect of long-distance transmission of large-scale wind power under high permeability on the regional damping of the system, This paper presents a wide area controller design method which can be used to design a wide area controller which can change the operation mode of the system (such as wind farm wind speed sharp change etc.) the time-delay linear parameter variation method is used to model the power system with wind power. The whole parameter range is divided into meshes, then the controller is designed separately, and then the scheduling criterion is formulated by triangular membership function and the controller weight is assigned. Thus, a wide-area gain scheduling controller is constructed, which can satisfy all the parameter variation ranges. The simulation results in time domain show that, The proposed wide-area controller design method still has a better effect on the situation where the operating range of the system changes greatly, and is more robust than the traditional pole assignment method. Compared with the classical robust control method and the nonlinear control method, the controller has the advantages of low order of controller, simple design method and easy to be realized in engineering. The designed controller takes into account the characteristics of variable time delay in power system. Compared with the traditional Pade approximation method, it has lower conservatism.
【作者单位】：武汉大学电气工程学院;电力设备电气绝缘国家重点实验室(西安交通大学);
【基金】：西安交通大学电力设备电气绝缘国家重点实验室资助(EIPE13205)~~
【分类号】：TM614

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