考虑搁浅成本的多能源同台竞价“两部制”交易机制设计

Design of“Two-part System”Trading Mechanism of Multi Energy Bidding on the Same Platform Considering Stranded Cost

在新型电力系统的加快推进下,部分已投产机组产生搁浅成本,通过市场化手段回收搁浅成本并实现火电、风电、燃机等不同能源发电机组的同台竞价至关重要。为解决改革后电力市场的突出问题,提出通过“两部制”成本定价机制回收搁浅成本实现多能源同台竞价的思路。首先对发电机组的搁浅成本进行核定,提出“两部制”成本定价机制与多能源统一申报、联合出清模式,在发用电两侧进行差价分摊与返还。然后分别模拟火电与新能源机组的同台低价测算和火电与燃气机组的同台高价测算场景,分别采用不同的出清顺序确定方式进行模拟竞价出清,其出清结果证明“两部制”交易机制能够收回发电机组的搁浅成本,一定程度上实现了多能源同台竞价,为电力市场化改革提供参考。

With the acceleration of the new power system,some units that have already been put into operation have incurred stranded costs.It is crucial to recover the grounding costs through market-oriented means and achieve the same bidding for different energy generation units such as thermal power,wind power,and gas turbines.Based on the prominent issues in the post reform electricity market,this article proposes the idea of using a“two-part system”cost pricing mechanism to recover stranded costs and achieve multi energy bidding on the same platform.Firstly,the grounding cost of the power generation unit is verified,and a“two-part system”cost pricing mechanism and a unified declaration and joint clearance model for multiple energy sources are proposed.The price difference is shared and refunded on both sides of the power generation and consumption.Finally,the scenarios of low price calculation for thermal power and new energy units on the same platform and high price calculation for thermal power and gas units on the same platform were simulated,and different clearing orders were used to determine the simulated bidding clearance.The clearing results showed that the“two part system”trading mechanism can recover the grounding cost of power generation units,and to some extent,achieve multi energy bidding on the same platform,providing reference for the reform of electricity marketization.