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Off-policy deep reinforcement learning with automatic entropy adjustment for adaptive online grid emergency control

Journal Article · · Electric Power Systems Research
 [1];  [1];  [2]
  1. Brookhaven National Laboratory (BNL), Upton, NY (United States)
  2. Southern Methodist Univ., Dallas, TX (United States)
Electric overloading conditions and contingencies put modern power systems at risk of voltage collapse and blackouts. Load shedding is crucial to maintain voltage stability for grid emergency control. However, the rule- or model-based schemes rely on accurate dynamic system models and face considerable challenges in adapting to various operating conditions and uncertain event occurrences. Here, to address these issues, this paper proposes a novel deep reinforcement learning (DRL)-based voltage stability control algorithm with automatic entropy adjustment (AEA) for grid emergency control. Various dynamic network components for complex system operations are modeled to construct the DRL environment. An off-policy soft actor-critic architecture is developed to maximize the expected reward and policy entropy simultaneously. The AEA mechanism is proposed to facilitate the policy maximum entropy procedure, and the proposed method can automatically provide effective discrete and continuous actions against various fault scenarios. Our approach accomplishes high sampling efficiency, scalability, and auto-adaptivity of the control policies under high uncertainties. Comparative studies with the existing DRL-based control methods in IEEE benchmarks indicate salient performance improvement of the proposed method for dynamic system emergency control.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE; USDOE Office of Electricity (OE), Advanced Grid Research & Development. Power Systems Engineering Research
Grant/Contract Number:
SC0012704
OSTI ID:
1992867
Alternate ID(s):
OSTI ID: 1960881
Report Number(s):
BNL-224619-2023-JAAM
Journal Information:
Electric Power Systems Research, Journal Name: Electric Power Systems Research Vol. 217; ISSN 0378-7796
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (17)

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Power Systems Stability Control: Reinforcement Learning Framework journal February 2004
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Decision Tree-Based Preventive and Corrective Control Applications for Dynamic Security Enhancement in Power Systems journal August 2010
An Efficient Optimal Control Method for Open-Loop Transient Stability Emergency Control journal July 2017
Data-Driven Load Frequency Control for Stochastic Power Systems: A Deep Reinforcement Learning Method With Continuous Action Search journal March 2019
Accelerated Derivative-Free Deep Reinforcement Learning for Large-Scale Grid Emergency Voltage Control journal January 2022
Adaptive Power System Emergency Control Using Deep Reinforcement Learning journal March 2020
Safe Off-Policy Deep Reinforcement Learning Algorithm for Volt-VAR Control in Power Distribution Systems journal July 2020
Graph-Based Faulted Line Identification Using Micro-PMU Data in Distribution Systems journal September 2020
Deep Reinforcement Learning Based Volt-VAR Optimization in Smart Distribution Systems journal January 2021
Decentralized Voltage Control of PowerSystems Using Multi-agent Systems journal January 2020

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