Electricity Price Risk Analysis of Units with Heat Storage and Transformation Based on LMP

Renewable energy in the power system affects the operation of electricity market. Equipping traditional units with heat storage and transformation can effectively improve its’ control capability and operation efficiency. However, there are few studies analyze the electricity price risk of units with heat storage and transformation. Therefore, this paper establishes an electricity price risk analysis model of units with heat storage and transformation, which consists of an operation model of units and a electricity price risk model of electricity market. Firstly, the operation model of units with heat storage and transformation is established based on the operation principle. Secondly, the calculation formulas of locational marginal price are derived. Then, a electricity price risk model of electricity market considers transmission congestion is established. Last, the results are compared to analyze the effect of units with heat storage and transformation on electricity price risk. The results show that units with heat storage and transformation can reduce the electricity price risk and cost of power system.