计及源荷储的多台区负载均衡协同调控方法

Load Balancing Cooperative Dispatching and Control Method Considering Source-load-storage in Multiple Transformer Areas

分布式可再生能源(光伏等)发电的不确定性以及柔性负荷的“即插即用”,易引发台区负载不均衡、三相不平衡等问题。为了解决上述问题,文章提出计及源荷储的多台区负载均衡协同调控方法,其由上层台区之间负载均衡协同控制策略与下层台区内部源荷储协调优化调度策略组成。在上层基于台区之间环型电力网架以及与之对应的通信网架,并考虑台区之间通信传输延时和网架拓扑的可变性,设计多台区之间协同一致性控制,实现台区负载均衡;在下层基于台区融合终端与台区内部源荷储之间的纵向辐射型通信网架,设计台区内部分布式发电和柔性负荷等可控资源协调优化调度算法,以低碳环保为目标来响应上层台区负载均衡的功率调节指令。最后通过仿真算例验证了所提方法的有效性,实现了多台区负载的均衡调控。

The uncertainty of distributed renewable energy generation,and the"plug and play"of flexible load are easy to cause problems such as load imbalance among distribution transformer areas and three-phase imbalance.In order to solve the above problems,this paper proposes a load balancing cooperative dispatching and control method for multiple transformer areas,which consists of the load balancing cooperative control strategies among distribution transformer areas,and the source-load-storage coordinated optimization scheduling strategies within the transformer area.In the upper layer,based on the ring-type power grid and the corresponding communication grid,considering the communication transmission delay between the transformer areas and the variability of the network topology,and the cooperative control strategies between the transformer areas are designed to achieve the load balancing of the transformer areas.In the lower layer,based on the vertical radiant communication network between the terminal and the internal source-load-storage,the coordinated optimization scheduling strategies of controllable resources are designed to respond to the power regulation instructions of the upper layer with minimum operating costs and pollution emissions.Finally,the effectiveness of the proposed method is verified by a simulation example,which realizes the load balancing cooperative control in multiple transformer areas.