稀疏通信下分布式电源微增率一致性加速算法

Consensus Acceleration Algorithm of Incremental Cost Rate for Distributed Generators Under Sparse Communication Network

基于分层控制结构,提出一种稀疏通信下的分布式电源微增率一致性加速算法。该方法无需中央控制器,借助稀疏通信网络实现分布式电源的三次分层控制并加快收敛速度。在该分层控制中,一次控制采用线性下垂控制策略;二次控制仅借助本地频率信息实现系统频率调节;三次控制考虑各分布式电源的成本微增率,利用稀疏不完备的通信网络传递分布式电源成本微增率信息,并结合非线性下垂控制实现微增率的一致性,各分布式电源能较快地收敛至等微增率点。该算法所构建的稀疏通信网络拓扑可以是任意的,对于通信网络的单双向及连通性都没有要求。仿真算例验证了该算法的有效性。

An consensus acceleration algorithm of incremental cost rate is proposed to effectively accelerate the convergence speed,which only requires a sparse communication network to realize three-level hierarchical control of distributed generators.The distributed primary control adopts linear droop control strategy.The distributed secondary control makes each distributed generator participate in system frequency regulation with their output frequency information;and distributed generators exchange cost incremental value information by any designed communication network.Then the distributed tertiary control adopts the consensus acceleration algorithm of incremental cost rate based on nonlinear droop control strategy to realize the optimal operation of power grid in a fast convergence speed.Finally,simulations validate the effectiveness of the proposed algorithm.