Research On Optimized Operation Of Comprehensive Energy System In Electricity Market

The integrated energy system is an important form of terminal of power system with distributed generation equipment and multi energy conversion equipment inside,so uniformly regulate internal resources and ensure the economic and stable operation of the integrated energy system is now important problem.With the deepening of power market reform,the power market will penetrate into all aspects of the energy field in the future which must be considered in the optimized operation of integrated energy system.This article conducts research on the optimal operation of integrated energy system under the power market environment of China.The main research contents are as follows:1.Based on the analysis of the structure of a typical integrated energy system,this paper conducts a detailed steady state mathematical model and brief introduction of various energy units such as wind / solar / storage / combustion / cooling / heating inside the system.Meanwhile,the relevant characteristics and models of load demand response are introduced.It lays the foundation for the research on the optimized operation of the spot market and demand response of the integrated energy system in the power market.2.On the basis of detailed analysis of China’s typical power market—the Guangdong power market,a corresponding mathematical model of its trading rules—deviation spread transfer settlement is established as an important part to study the impact of the market design and a way of closing to the actual situation of Guangdong.Meanwhile,the conditional valueat-risk(CVa R)is used to quantify the price uncertainty faced by the integrated energy system,so that the optimization operation problem can be transformed into a mathematical problem with degree of confidence.The effects of parameters such as the optimal operation status of internal equipment and risk preferences,allowable deviation coefficients,and energy storage installation capacity on result were studied in case study.3.According to demand response,important element of power market,detailed analysis of characteristic of participating devices and processes,and a corresponding demand response mathematical model was constructed based on the characteristics of load,including objective functions and operating boundary conditions.The research analyzes the optimal operation strategy of the integrated energy system to participate in demand response,and focuses on the important parameters of relevant policy formulation and actual applications: analysis of incentive prices and response credibility to study its impact on optimization benefits.Meanwhile,research on the operating status of the integrated energy system under demand response is analyzed,including the comparative operating status and reasons of different internal components.