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文章考虑由一个发电厂和两个电网企业组成的电力供应系统,研究了两个对称的电网企业的电力和可再生能源证书的联合订购策略.经分析发现,虽然政府规定交易需要配备相应比例的可再生能源证书,但是由于可再生能源证书的需求是依赖于电力的需求量的,所以其决策是可以独立于电力交易的;而可再生能源证书的最优订购数量与其批发价格和政府罚金的比例有关,当该比例较小时,电网企业购买证书的数量较多,反之亦然.文章还研究了两个电网企业间需求的关联性对各自订购策略及成本的影响,并发现当需求正相关时,随着相关系数的增大,电网企业订购证书的数量逐渐减少,而相应的成本却逐渐增加;当需求负相关时,结论相反,而政府则可以通过调节罚金以降低这种影响.
The article considers a power supply system consisting of a power plant and two grid companies, and studies the tactics for the joint ordering of electricity and renewable energy certificates for two symmetrical grid companies. After analysis, it is found that although the government requires transactions to be proportioned Renewable energy certificates, but because the demand for renewable energy certificates is dependent on the demand for electricity, their decisions can be independent of electricity trading; and the optimal order quantity of renewable energy certificates with their wholesale prices and government fines The proportion is relevant. When the ratio is small, the number of certificates purchased by the grid companies is larger, and vice versa. The article also examines the impact of the relevance of the demand between the two grid companies on their respective ordering strategies and costs, and finds that when the demand is positively related At that time, as the correlation coefficient increased, the number of power grid companies’ order certificates gradually decreased, while the corresponding costs increased gradually; when the demand was negatively correlated, the conclusion was reversed, and the government could reduce such impacts by adjusting the penalty.