Coordinated Control Strategy for Multi Micro Energy Systems Within Distribution Grid Considering Dynamic Characteristics and Contradictory Interests

Abstract

As a typical form of integrated energy system, micro energy system (MES) is promoted and popularized at the terminal of distribution grid. To achieve the efficient and reliable energy utilization of MES, two main problems need to be solved: how to consider the dynamic characteristics of heterogeneous energy resources and diverse MES operating states under multiple time scales and how to coordinate the interests of both MES operator and distribution grid operator. This paper aims to establish the models of specific energy devices in MES and propose a coordinated control strategy for multi MESs within distribution grid considering dynamic characteristics and contradictory interests. The proposed strategy is presented from the MES side and distribution grid side with consideration of different control objectives under dayahead dispatch, intra-day dispatch and emergency control circumstances. A case study based on IEEE 33-bus system with MESs connected is conducted to verify the effectiveness of the proposed strategy.INDEX TERMS Micro energy system, optimal scheduling, emergency control, dynamic characteristics.

Bulletin of the Polish Academy of Sciences: Technical Sciences

“…This topology results in the configuration of the power system without supplying all loads. In other cases, the use of graph theory comes down to the topology sectioning method [16]. Such solutions use the assignment of weighting factors to individual power lines, depending on active and reactive power.…”

Reliability Assessment of the Integrated Energy System Considering Gas–Thermal Inertia

“…However, the multienergy coupling characteristics in the IES increase the operation complexity and uncertainty at the same time, which challenges the safe and reliable operation of the system (Mu et al, 2020;Wu et al, 2021). Therefore, it is necessary to fully exploit IES flexibility and ensure operation reliability and security through coordination and optimization (Wang et al, 2019). Compared with traditional power systems, the slow dynamic characteristics of gas-thermal system in the multienergy coupling IES contains rich flexibilities, which will help improve the reliability of system operation (Saldarriaga et al, 2013).…”