Abstract
Ancillary services are critical to maintaining the safe and stable operation of power systems that contain a high penetration level of renewable energy resources. As a high-quality regulation resource, the regional integrated energy system (RIES) with energy storage system (ESS) can effectively adjust the non-negligible frequency offset caused by the renewable energy integration into the power system, and help solve the problem of power system frequency stability. In this paper, the optimization model aiming at regional integrated energy system as a participant in the regulation market based on pay-for-performance is established. Meanwhile YALMIP + CPLEX is used to simulate and analyze the total operating cost under different dispatch modes. This paper uses the actual operation model of the PJM regulation market to guide the optimal allocation of regulation resource in the regional integrated energy system, and provides a balance between the power trading revenue and regulation market revenue in order to achieve the maximum profit.
Highlights
With a large number of Renewable Energy Sources (RES) integrated into the power grid and the construction of the Energy Internet, it can be expected that by 2050, renewable energy generation as a proportion of total energy consumption may reach 80%
By real-time adjusting the state of charge (SOC) of the energy storage system (ESS) in real time, the regional integrated energy system (RIES) with ESS can be ensured that it participates in the regulation service of the ancillary market after completing the maximum renewable energy consumption, and reducing the overall operating costs of RIES
Cloc,total consists of three parts, which can be expressed as [25]: cloc,total = cloc,be f ore + cloc + cloc,a f ter cloc,be f ore is the pre-regulation cost, which refers to the increased cost that occurs due to change the output of the regulation resources from the optimal economic operating point to meet the system demand, before the regulation resource participate in regulation. cloc is the cost during the regulation
Summary
With a large number of Renewable Energy Sources (RES) integrated into the power grid and the construction of the Energy Internet, it can be expected that by 2050, renewable energy generation as a proportion of total energy consumption may reach 80%. To solve the problems described above, a detailed RIES with ESS as a participant in the regulation market based on pay-for-performance and the actual operation scenario is established. On this basis, a real-time dispatching strategy for ESS participating as regulation service based on the day-ahead price of power market is designed and completed. By real-time adjusting the state of charge (SOC) of the ESS in real time, the RIES with ESS can be ensured that it participates in the regulation service of the ancillary market after completing the maximum renewable energy consumption, and reducing the overall operating costs of RIES
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