Trade Balance Optimization Model And Transmission Price Mechanism Of Trans-regional Electricity

To break the monopoly and introduce a competitive mechanism gradually, then to optimize the allocation of power resources and to improve the efficiency of electricity market operation is the direction of the world power industry market-oriented reform. In order to bring the scale merit of power industry into full play, it is necessary to break the barriers between provinces and carry the market-oriented reform out in a larger region. Therefore, the trans-regional electricity trade had been one of the main themes of power industry reform. With the constant expansion of the power system and the realization of the high-voltage and long-distance transmission technology, many functions, such as compensation regulation, avoiding the peak hours, etc. would be achieved in a larger range, thus power resources would be allocated reasonably in a broader space.In China, the nature resources, such as coal, hydropower and wind are mainly concentrated in the north, northwest and southwest, while the energy consumption is mainly concentrated in the eastern coastal region. The imequilibrium between the distribution of energy resources and the development of economy led to a great difference in the scale of power construction and the space of power market among regions. Thus, it is necessary for China to implement the development strategy of "transmitting the electricity from western areas to East China, supplying mutually between the south and the north", and to realize a nationwide trans-regional grid interconnection and power trading. Therefore, to give full play to the advantage of the energy resource-rich regions to build large-scale coal, wind, unclear bases, to satisfy the electricity demand in the regions with a rapid development of economy and a shortage of energy would be the main developing trend of China’s electricity industry in the future. However, trans-regional electricity trade is a system project. With the improvement of electricity market-oriented reform, the expansion of trading range, and the gradually increasing of stakeholders and electricity trading volume, A series of problems needed to be solved emerged in the trans-regional electricity trade.On the theoretical basis of modern system science, network, market economics, business management, and cost theory, especially the theory of market competition and price theory, the framework and the theory and methods of the operation of regional electricity market has studied systemically in this paper. By analyzing and comparing the process of electricity marketization abroad, learning the successful experience of the construction of foreign electricity market, and combining the practice of China’s power industry, many problems are studied in this paper.Firstly, an auction model based on the interconnection capacity coordination was built to solve the congestion cost problem that may arise when the capacity of system was insufficient.Secondly, In order to analyze how the generators change the equilibrium bidding function in each region in interconnected system, a model for cross-region electricity exchange based on implicit auction is put forward. The change trend of bidding price, which is brought by cross-regional interconnection, and the redistribution of benefits and losses among regions were presented from the aspect of bidding effect and electricity effect.Thirdly, to build a trans-regional electricity bilateral trade pricing model to solve the pricing problem of trans-regional electricity trade in China.Finally, to study the game between regulators and the ones being regulated, a trans-regional electricity trading regulatory model based on the Nash equilibrium, which setting the regional welfare maximization as the objective function and the cross-transmission compensation funds and network cost budget as constraint conditions, is established.