Search Results (3)

The connection between the green certificate market and the CCER market can further achieve the dual carbon goals, so it is imperative for the green certificate market, CCER market, and the connection market to coexist. it is necessary to convert green certificates into CCER in the connection market to achieve transactions between the two. The research is aimed at exploring the interface between green certificates and CCER, with the main objective of finding trading mode and trading method to address the interface between the two. This paper firstly proposes a concept of contribution degree that assists fair trading in the market, based on the different ways in which contribution degree is introduced in the trading of green certificates, CCER markets, and connecting markets, and establishes basic trading mode, unilateral contribution trading mode (UCM) and bilateral contribution trading mode. Then, the rolling matching trading model with the goal of maximizing total social welfare, the contribution degree model and the effect test model are established to realize the implementation of the above three modes through different combinations of the models. Finally, the quantitative results are obtained by simulating the trading situation of the three modes, and CCER offset ratio and contribution degree indicator weight are discussed. The results show that it is feasible to build a bridging market between green certificate and CCER by using the contribution degree, in which the UCM is the optimal solution to achieve the dual-carbon goal and market development. The setting of CCER offset ratio can be based on the difference of enterprise types, and the weight of indicators affecting the contribution level should be adjusted with the policy. The research in this paper has the following contributions: (1) a new criterion to satisfy fair trade—contribution degree is proposed to provide ideas for mutual recognition of products in the bridging market, and proposed a contribution degree calculation model for the green certificate and CCER markets, as well as the bridging market; (2) from the perspective of the contradiction between supply and demand in the market and fair trade, different schemes to build a bridging market are given in a fixed context and compared and analyzed; (3) from the market level, the quantitative analysis of the indicator settings affecting emission reduction, providing suggestions for the differentiated evaluation of warrants and the formulation of carbon reduction policies. Full article

With the update of the power transaction mode and the access of increasing electric vehicles with high randomness to the power grid, the existing carbon emission flow calculation method cannot consider the influence of carbon emission due to the fluctuation in electric vehicle charging and various transaction modes. Given the above shortcomings, this paper proposes an improved carbon emission flow model considering electric vehicle charging fluctuations and hybrid power transactions. The model first considers different transaction modes, allocates the network loss to both sides of power generation, and forms a lossless network, realizing the decoupling of the bilateral transaction mode, pool transaction mode, and network loss and then calculating the day-ahead network’s carbon emission. Then, the changes in different transaction modes caused by the fluctuation in electric vehicle charging under different transaction modes are analyzed and the nodes of ‘spontaneous change’ are found to form a day-ahead intra-day deviation network and calculate its carbon emission flow. Finally, the calculation results are combined to obtain an improved power system carbon emission flow considering electric vehicle charging fluctuations and transaction modes. In this paper, the 33-node system is used for verification. Full article

Sizing and configuring community-shared energy storage according to the actual demand of community users is important for the development of user-side energy storage. To solve this problem, this paper first proposes a community energy storage cooperative sharing mode containing multiple transaction types and then establishes a sizing and configuration model of community-shared energy storage based on a cooperative game among community users and energy storage operators, in which the loss caused by the capacity decay of energy storage is quantified by a dynamic power loss cost factor. To improve the solving efficiency, a distributed and cooperating solving method based on ADMM is used to solve the sizing and configuration model. On this basis, the bilateral Shapley method is used to allocate the total annual cost according to the marginal expected cost brought by each user. Compared with existing strategies, this paper calculates the economic benefits of community-shared energy storage based on several typical days of each year and quantifies the capacity decay of energy storage by a dynamic power loss cost factor which increases year by year to be closer to the real situation. Finally, the simulation verifies that the model proposed in this paper can be used for the sizing and configuration of community-shared energy storage. Compared with the original annual cost, the total annual cost of the community is reduced by 3.92%, and the annual operation cost of the community which equals annual electricity purchasing cost minus annual electricity selling income plus annual power loss cost is reduced by 25.6%. Full article