Distribution management system framework based on security region for future low carbon distribution systems

Abstract

In this paper, a new Distribution Management System (DMS) framework based on security region is proposed. First, the concept of Distribution System Security Region (DSSR) is introduced. DSSR is capable to describe the N -1 security boundary of the whole distribution network, including the secure output range of DGs. This new theoretic tool provides a chance for the implementation of real-time security analysis and active controls in DMS. Second, this paper proposes and describes five security states for distribution system. Third, an upgraded DMS enhanced with DSSR is proposed, which consists of advanced security functions such as preventive and predictive control of the trajectory of operating points. Finally, a practical case is presented to simulate the proposed DSSR-enhanced DMS, in which both the security region of network and the output range of DGs are calculated. Typical security functions are also demonstrated. In conclusion, the new DMS framework aims to help operate the system closed to its security boundary in order to improve the efficiency significantly within same security standard. This work is beneficial for future low carbon distribution systems with high penetration rate of DGs.

Boundary supply capability for distribution systems: concept, indices and calculation

“…iv. Therefore, the criterion is as follows: calculate the security distance D i of the point [21]. Step 3: Process the results, including drawing sorted BSC curve and proportion distribution curve, computing BSC indices.…”

“…In order to obtain the curve of BSC proportion distribution, the BSC interval [20,32] is divided into seven sub-intervals [20,21), [21,23), [23,25) especially, B 1 = 20, B 7 = 32. Count the points whose BSC falls in each sub-interval, and compute their proportion distribution which is shown in Appendix 4.…”

A Bi-Level Optimal Operation Model for Small-Scale Active Distribution Networks Considering the Coupling Fluctuation of Spot Electricity Prices and Renewable Energy Sources

“…Li et al [4] studied a bi-level interactive optimization model for active distribution networks with microgrids, which minimizes operation cost and voltage deviation to achieve a low-carbon system. Finally, Xiao et al [5] proposed a new Distribution Management System (DMS) framework based on security region, which aims to help operate the system close to its security boundary in order to improve the efficiency significantly within the same security standard.…”

Multi-time-scale Resource Allocation Based on Long-term Contracts and Real-time Rental Business Models for Shared Energy Storage Systems

“…The maximum energy that battery unit bn can store and output T HERE is a global consensus that the advancement and application of renewable energy, exemplified by wind and solar power, are pivotal in steering the current energy industry toward a clean and low-carbon type [1]. The increasing threat to power system security from the inherent unpredictability of renewable energy, marked by its intermittency and volatility, places a growing emphasis on the indispensable role of energy storage systems (ESSs) as key flexible regulation resources [2].…”