An Active Power Control Strategy Of High-Energy Load Considering Wind Power Consumptive

With the rapid development of renewable energy,wind power and photovoltaic power generation has been increasingly attracting emphasis.Different from conventional power generation such as firepower and waterpower,new energy power generation has the characteristics of volatility,intermittence and uncontrollability,which makes the regulation ability of conventional power supply difficult to deal with and brings great challenge to power grid operation.In order to solve the outstanding problems of large-scale wind power curtailment and disposal of light,this paper takes advantage of the regulation of high-energy load as an important means of renewable energy consumption.Present the scheduling mode of high-energy load.Study the multi-targets optimal scheduling model and the active control strategy on multiple time scale.The main work and achievements are as follows:(1)The operating characteristics of high-energy load are studied.According to the regulation characteristics of different high-energy load types,it can be divided into three categories:discrete load,transferable load and adjustable load and three mathematical models are established.At the same time,the scheduling mode on multiple time is studied.By using the idea of coordinating control among several grades and separating into each grade,the scheduling plan is updated by rotational correction and achieve optimal dispatch scheme of high-energy load in a day.(2)A multi-objective optimal scheduling model is established.The model is based on the maximum energy consumption on the grid side and the maximum load response benifit of the enterprises.Its constraint conditions include balance of active power,high-energy load and new energy.The multi-ojective evolutionary algorithm based on decomposition(MOEA/D)can solve the contradiction between the renewable energy consumption and the economic operation of the system.(3)Aiming at the problem of the accuracy of the prediction,a multi-time-scale active power control strategy with high-energy load is proposed.On the basis of the day-ahead scheduling scheme,the day rolling layer is based on the prediction of the output power of power plants in the future 4 hours which is continuously updated.The adjustable load participate in the scheduling for its shot regulation cycle and quick response.The use of the latest renewable energy forecast information can reduce the impact of forecast errors on the day-ahead plan,so as to improve the consumption of renewable energy.