Abstract
China’s electricity market is undergoing a rapid development stage from plan to market and will exist in plan and market models for a long time. Based on the status quo of China’s power plan and market in-depth, this paper has studied and put forward a kind of market transaction mechanism adapted to the plan and market models of China. The mechanism arranges a priority generation plan first to match the priority electricity plan. Especially for renewable energy generation output greater than planned value, it carries out priority arrangement of renewable energy generation to guarantee its reliable consumption. Then medium- and long-term market transactions and incremental spot market transactions are carried out. This paper detailed design operational processes such as priority plan, medium- and long-term, spot (i.e., day-ahead, intraday, and real time), auxiliary services, and balance stages. Finally, based on actual data of the provincial electricity market, the calculation and analysis are carried out to verify that the method proposed in this paper can effectively reduce market imbalance and promote renewable energy consumption, which has a certain practical value for China’s electricity market development.
Highlights
From the perspective of the power generation side, priority generation mainly guarantees the demand of clean energy consumption, unit heating, and regulatory power generation required by safe operation, inter-provincial resource allocation, etc
According to the order of arranging priority plan, organizing the medium- and long-term market transactions, and organizing the future incremental spot transaction, this paper will study the mechanism with relative decoupling between plan and market, which can effectively reduce the imbalance of generation and consumption sides’ funds
In order to ensure a real-time balance of power generation and consumption and reasonably reflect real-time supply and demand of power system and balance cost, system safety constraints such as network topology constraints and unit operation constraints can be comprehensively considered based on market transaction results in the medium- and longterm and day-ahead, priority generation and consumption plans, and centralized and unified dispatching
Summary
China’s electricity market is promoting the transition from plan to market. From the perspective of the power generation side, priority generation mainly guarantees the demand of clean energy consumption, unit heating, and regulatory power generation required by safe operation, inter-provincial resource allocation, etc Their pricing methods include government pricing (guaranteed price) and market pricing (guaranteed bidding). Considering the current situation and characteristics of China’s power system, the design of its market model should be based on the requirements of priority generation and consumption policies, while the priority consumption requirements of renewable energy should be taken into account. According to the order of arranging priority plan, organizing the medium- and long-term market transactions, and organizing the future incremental spot transaction, this paper will study the mechanism with relative decoupling between plan and market, which can effectively reduce the imbalance of generation and consumption sides’ funds. The result shows that the market transaction mechanism proposed in this paper can effectively promote the improvement of renewable energy consumption capacity and that it can reduce unbalanced funds
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