Research On Unit Commitment Optimal Scheduling Of Hybrid Power System

Today,the exploitation and efficient use of energy has become the focus of every country.In the process of energy exploitation,energy security,environmental pollution control and environmental governance are important links.China advocates efficient and clean energy,and the replacement of fossil energy with new energy can reduce environmental pollution.China is a big developing country in the world with a large population.The current situation of energy structure and development is very serious.The security of energy is also threatening China's national energy strategic plan.At the same time,environmental pollution is also more serious,greenhouse gas emissions caused by the greenhouse effect is more serious.Therefore,the efficient and effective development of energy has become an important measure to solve China's energy crisis.Wind power and photovoltaic,as important components of RE,have also been integrated into the generation power system.At the same time,because of its volatility and randomness,it has a certain impact on the safety and optimal scheduling of power system.China has large-scale power generation,such as the three gorges hydroelectric power system for china has brought huge welfare.The development of hydropower has a great significance on China because it can reduce the use of traditional fossil fuels and also reduce environmental pollution.The disproportion of energy development has a great impact on China's energy of development strategy.Therefore,the use of mixed energy has become an important strategic measure of economic development.The highly efficient mixed utilization of thermal power,cascade hydropower and new energy is an important direction of contemporary energy development.Therefore,it is of great significance for the contemporary strategic development of energy to formulate a reasonable multi-energy complementary scheduling strategy for hybrid energy.Our work on a range of energy includes the following:(1)Thermal power is the main component of contemporary electric power.The efficient combination of units and the control of greenhouse gases are the recombination of units.In order to get the maximum benefit,a multi-objective dispatching system is needed,which takes the operating cost of thermal power units and the environmental emission of greenhouse gas carbon dioxide as the target,considering the conventional constraints of units,and using the multi-objective artificial sheep algorithm for optimization.This paper not only analyzes the high efficiency of the algorithm,but also analyzes the relationship between environment and unit operation cost and relevant constraints,and also verifies the rationality of multi-objective coordination and optimization,which is of great significance to the development of energy.(2)in order to study the influence of new energy access to the power grid on the energy security operation and energy optimization scheduling of the power system,this paper takes into account the constraints of power system network,with the economy as the goal,don't consider the effect of the randomness of the wind,establish the system of IEEE-30 buses containing 10 thermal power unit,a wind unit and a photovoltaic which is a general optimization calculation model.The up/down state of the unit,influence of RE on the system and the network security of the system are verified by analyzing the of the up/down unit,load distribution,various constraints,voltage of buses,branch power flow and active power in the system.The optimal scheduling strategy is formulated by optimizing the whole model with ABABC algorithm.(3)In the process of energy mix optimization coordination scheduling,mix thermal power-hydro-RE energy be accessed into the modified IEEE-118 buses,and taking economic cost and environmental emission as target.The whole model contains 36 thermal power unit,4 cascade hydropower stations,a wind turbine and a photovoltaic units together to optimize UCP,considering the security constraints and conventional hydropower.At the same time,the continuous and discrete variables of the optimization variables are coupled to increase the multi-objective mechanism optimization mechanism,which greatly expands the scope of application of the algorithm.The conventional constraints are also analyzed to compare the influence of safety constraints on the safety of system power generation.