计及多类型交易的新能源与火电实时协调控制策略

Real-Time Coordinated Control Strategy for New Energy and Thermal Power That Takes Into Account Spot Transactions

针对现阶段新能源电站参与交易后与火电的实时协调控制问题,提出计及多类型市场交易的新能源实时有功控制策略,能够有效提高新能源电站的调控精度和电量公平性。首先提出电站的综合考核指标,建立关于现货申请批复指令的目标函数;其次分析新能源与常规电源协调控制的优化约束,在识别常规机组状态的基础上求解负备用值,优化新能源的出力上限值;最后提出新能源参与跨区现货交易期间,考虑现货交易和中长期计划的两阶段数学模型,提高多种电量成分交易下电网的调控精度和运行经济性。

In view of the real-time coordination and control problem between new energy power stations and thermal power when they participate in the trading at the present stage,the real-time active power control strategy for new energy containing multiple types of market transactions is proposed.The strategy can effectively improve regulation accuracy and power fairness of new energy power stations.Firstly,the paper puts forward the comprehensive assessment index of power stations,and establishes the objective function of the maximum approved spot application for active power.Secondly,the constraints of the coordinated control optimization of new energy and conventional power supply are analyzed.On the basis of identifying conventional units'operational state,the negative reserve is solved to optimize the upper limit of new energy output.At last,the two-stage model considering spot trading and medium and long-term planning is proposed to improve the regulatory accuracy and operational economy of the grid under the transaction involving multiple types of electricity when new energy stations participate in cross-regional spot trading.