KEYWORDS: Industry, Power supplies, Displays, Solar energy, Industrial applications, Head, Analytical research, Testing and analysis, Design and modelling, Shadows
In recent years, with the continuous development of China's electric power spot market construction, the market power problem brought by the structure of China's power generation-side has gradually become severe, and has evolved as the focus issue in the process of power market reform. The injection of renewable sources and the participation of distributed generation resources have brought profound influence on the power system and the power market, and it is urgent to establish and complete the market power monitoring and mitigation mechanism of China's electricity spot market. This paper primarily discusses the market power monitoring methods and mitigation mechanisms, then introduces the mature experience of typical international power markets in market power monitoring and mitigation mechanisms. Secondly, this paper summarizes the existing power monitoring and mitigation mechanisms in China, and analyzes the development and challenges of market power monitoring and mitigation mechanism construction under the new power system. We aim to provide some reference for the evaluation, monitoring and mitigation of market power in a series of practical aspects.
KEYWORDS: Power grids, Boundary conditions, Power supplies, Power consumption, Reflection, Solar energy, Signal processing, Renewable energy, Design rules, Design and modelling
Hubei is the second batch of power spot market pilot areas, and the construction of the spot market is imminent. At present, there are many difficulties and challenges in the construction of the spot market in Hubei. First, the price of thermal coal has fluctuated significantly in recent years, and many thermal generators have incurred losses due to the rising fuel prices, disrupting the stable operation of the market. Secondly, Hubei has a high installed capacity of hydropower, and there are many large-capacity hydropower generators with storage capacity. How to participate in the spot market of hydropower generators is a difficult problem that needs to be solved urgently at present. Based on the actual data of Hubei Power Grid, the electricity spot market is simulated. The market price and the profitability of various generators under different coal prices and different periods of hydropower dispatch are compared. The results show that in the spot market, the market price can correctly reflect the real price of electricity and ensure the profits of various generators. For hydropower generators, compared with the daily dispatch, the monthly dispatch of hydropower can better stimulate the storage capacity adjustment ability of hydropower and reduce the total cost of electricity consumption in the whole society.
In order to accelerate the establishment of a market system and long-term mechanism to promote renewable energy production and consumption, renewable energy trading (RET) has been proposed. In this study, we consider a blockchainbased renewable energy trading scheme and try to analyze the trading mechanism. Blockchain may guarantee the security of propagated information and help with the rapid and automatic trading matching through smart contract. In summary, blockchain-based RET owns the properties of decentralization, immutability, traceability and automation compare to traditional RET. In addition, results of cases show that the rule that switching the trading mechanism when ratio of supply and demand (RSD) exceeds 1.0 should be added in smart contract in order to get more profit.
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