NDLI: Research on load transfer strategy optimisation with considering the operation of distributed generations and secondary dispatch

Content Provider	IET Digital Library
Author	Jiang, Wei Wu, Lei Zhang, Lizong Jiang, Zhengwei
Abstract	In this study, a three-stage optimisation method for distribution system load transfer scheme with consideration of the participation of distributed generations (DGs) is proposed. The algorithm aims to recover loads from the large-scale power outage caused by substation-complete-shutdown accidents (SCSAs), thus improving the power supply reliability. First, the principle of the SCSA load transfer strategy considering DGs and the secondary dispatch is introduced. The capacities of DGs were used to provide the additional power supply in grid-connected or island operations. Meanwhile, to relieve the stress of the backup substation for further load transfer, a secondary dispatch strategy is proposed to dispatch loads among the direct-connected and secondary-connected substations. Afterwards, a three-stage optimisation model is built to obtain the optimal load transfer scheme. The first-stage optimisation determines the island partitions in the unrecovered areas. The second-stage optimisation comprises a tie-line transfer model considering the load importance and the recovery time. The third-stage optimisation intends to determine the optimal secondary dispatch to achieve a better overall recovery rate. Case study results prove that the proposed three-stage optimisation method can improve the overall load recovery rate while ensuring the reliability of important loads and the operation safety of the system.
Starting Page	5526
Ending Page	5535
Page Count	10
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 23, Dec (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/23
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2020.1144
Journal	IET Generation, Transmission & Distribution
Publisher Date	2020-09-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Additional Power Supply Backup Substation Direct-connected Substations Distributed Generations Distributed Power Generation Distribution System Load Transfer Scheme First-stage Optimisation Important Load Island Operation Large-scale Power Outage Load Dispatching Load Importance Load Recovery Rate Load Transfer Strategy Optimisation Operation Safety Optimal Load Transfer Scheme Optimal Secondary Dispatch Optimisation Optimisation Technique Power Distribution Fault Power Distribution Reliability Power Grid Power Supply Reliability Power System Economics Power System Managemen Power System Management Power System Operation Power System Reliability Power System Restoration Reliability SCSA Load Transfer Strategy Second-stage Optimisation Secondary Dispatch Strategy Secondary-connected Substations Substation-complete-shutdown Accidents Substations Third-stage Optimisation Three-stage Optimisation Method Three-stage Optimisation Model Tie-line Transfer Model
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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