Market pricing strategy for gas-electricity integrated energy system considering multiple market entities

With the access of multiple market entities，how to manage distributed resources in the system becomes a key problem of gas-electricity integrated energy system. From the perspective of incentive price，a day-ahead market clearing model for integrated energy system with two types of market entities including commercial building and distributed generators is established. The influence of net active power load，net reactive power load and natural gas load on system operation is considered comprehensively，and multiple sensitivity factors are introduced to linearize power flow and steady-state gas flow constraints. Further，the cleared distribution locational marginal price is divided into seven categories，i.e.，baseline active power price，baseline reactive power price，congestion management price，voltage support price，network loss price，baseline gas price and node pressure support price. Each market entity is encouraged to adjust its own operation mode to support system operation through the guidance of different price signals. Simulative results based on the integrated energy system composed by modified IEEE 33-bus distribution network and 24-node gas network verify the effectiveness and rationality of the proposed pricing strategy based on locational marginal price decomposition. © 2022 Electric Power Automation Equipment Press. All rights reserved.