Abstract
Regional integrated energy system (RIES) can realize multi-energy conversion and complementation so as to improve energy efficiency, which also brings more security risks. The regional integrated energy system security region (RIESSR) is a security analysis method to describe the safe area for the operating points of RIES based on the N-1 guideline. As a controllable device, energy storage (ES) which is installed in the energy hub (EH) plays an important role in improving system security. Therefore, this paper establishes the model of practical security region of RIES integrating energy storage, and studies the impact of ES on total supply capability (TSC) and practical security boundary. Finally, a specific case is set to simulate and verify the model. By comparing the scenario with ES and the scenario without ES, it can be seen that the solution result of TSC increases and the security region extends across quadrant when the RIES is integrated with ES system. The capacity and location of the ES also impact on TSC and RIESSR.
Highlights
Efficient and low-carbon energy consumption is the pursuit of the world, and regional integrated energy systems is an effective way to achieve the above goal
Reference [5] predicted the expansion of the security region when the Regional integrated energy system (RIES) is integrated with energy storage system, but did not analyse it in depth or verify it with a case.In order to solve the above research gap, this paper establishes the model of regional integrated energy system security region (RIESSR) integrated with ES, and analyses the impact of ES on RIESSR
It can be seen that the solution result of total supply capability (TSC) increases and the security region extends across quadrant when the RIES is integrated with ES
Summary
Efficient and low-carbon energy consumption is the pursuit of the world, and regional integrated energy systems is an effective way to achieve the above goal. Reference [3,4] proposed a supply capability model for distribution systems based on N-1 guideline and a kind of full-dimensional direct observation method of distribution system security region. Reference [5] proposed the supply capability model and security region observation method for integrated energy system. Reference [5] predicted the expansion of the security region when the RIES is integrated with energy storage system, but did not analyse it in depth or verify it with a case.In order to solve the above research gap, this paper establishes the model of RIESSR integrated with ES, and analyses the impact of ES on RIESSR.
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