Research On The Issue Of Synergistic Regulation Which Considering Power System Reliability On Market-oriented Reform Environment

ABSTRACT:In the traditional vertically integrated electric power system, the government department is the unique one who is responsible for the operation and regulation of power system. And under this circumstance, the primary goal of power system supervision is to ensure the supply of electricity safely and stability. With the continually reforming of electricity market, the goal of development is extended, that is, economic efficiency shall be improved, resources allocation shall be optimized, energy conservation shall be achieved, etc. while the requirement of safe operation is met. Thus, the current electric supervision system must be rearranged, system reliability, and market reformation,environment protection and system reliability and other targets must be coordinated.For China's electric power industry, how to take the economic and environmental goals into supervision system and perfect China's electricity regulatory framework, while how to ensure system reliability, is the important issue what faced now. Therefore, this paper will set the ensuring of system reliability as the breakthrough point, to explore a regulatory system suited the current China's electricity market, to avoid the happening of terrible reliability crises (just like what happened in United States, Europe etc. in the early stage of market reforming), and finally to realize a harmonious and stable development in electric power industry. Specifically, this paper firstly analyses the impacts of foreign power market reformation on system reliability and the current status at home and abroad and characteristics of foreign electricity regulation. Then, based on the status and problems existed in China's electricity industry and power supervision, the paper proposes the basic conception of electric power regulation considering system reliability. Secondly, the paper describes system reliability and synergistic regulation of power investment, and discusses the optimal investment of system reliability. Then, on this basis, the paper analyses reliability investment issues in different markets (such as competitive market, monopoly market, etc.) by building a reliability investment model. Thirdly, in order to explore synergistic regulation between environment and system reliability, social welfare optimization problem (under different circumstances:supervision, no supervision and without considering environment supervision) is analyzed by building a theoretical model considering environment and system reliability, from the perspective of environment supervision and system reliability regulation. Fourthly, from the viewpoint of reliability, the paper analyzes and studies the regulatory efficiency of different supervisory organization structure under the multiple regional transmission system. Finally, based on the specificity of China's electric power industry development, the paper discusses the mechanism of electric power supervision with considering system reliability, and proposes suggestions on synergistic regulation measures.Research shows:1) Synergistic regulation of investment planning of generation and transmission could raise the level of system reliability; meanwhile, the reliability level of concentrate power market is higher. Therefore, in the case of the market, supervision on reliability investment should be paid more attention.2) No matter under what market conditions, regulation between reliability and environment would contribute to achieve higher social welfare under a single regulatory objective.3) For the power system with a multi-regional transmission structure, without regulatory preferences, synergistic regulatory structure is more advantageous to the realization of the supervisory target.The innovations of this paper are:1) The correlation between grid investment and power generation investment is analyzed. What's more, control system, auxiliary services, operation agreement, capacity, etc. which are relevant to transmission are considered into the united system to identify system reliability. On this basis, reliability investment optimization model is built to study the optimal investment control system of power reliability, respectively from the hypothesis of social welfare, monopoly, sub-optimal, non-cooperation, etc.2) Theoretical model based on the utility function and considered reliability and pollution is proposed. In this model, electric pollutants are classified into two types:global pollutants and general pollutants, according to pollution features and pollution control methods. And the solutions of social welfare optimization are studied under the different circumstances of control and free competition separately, and in what circumstance the social welfare is optimal is discussed.3) In the large concentrated transmission system, optimal supervisory organization structure existing multi-regional transmission system and its effective coordination issues are analyzed from the viewpoint of reliability. And on this basis, optimization of transmission operation organization structure is discussed from the perspective of the reliability and alternative of transmission system.