1 code implementation • NeurIPS 2021 • Jianhong Wang, Wangkun Xu, Yunjie Gu, Wenbin Song, Tim C. Green
This paper presents a problem in power networks that creates an exciting and yet challenging real-world scenario for application of multi-agent reinforcement learning (MARL).
Multi-agent Reinforcement Learning reinforcement-learning +1
2 code implementations • 11 Jul 2019 • Jianhong Wang, Yuan Zhang, Tae-Kyun Kim, Yunjie Gu
To deal with this problem, we i) introduce a cooperative-game theoretical framework called extended convex game (ECG) that is a superset of global reward game, and ii) propose a local reward approach called Shapley Q-value.
1 code implementation • 31 May 2021 • Jianhong Wang, Yuan Zhang, Yunjie Gu, Tae-Kyun Kim
This paper studies a theoretical framework for value factorisation with interpretability via Shapley value theory.
2 code implementations • ICLR 2021 • Jianhong Wang, Yuan Zhang, Tae-Kyun Kim, Yunjie Gu
We test HDNO on MultiWoz 2. 0 and MultiWoz 2. 1, the datasets on multi-domain dialogues, in comparison with word-level E2E model trained with RL, LaRL and HDSA, showing improvements on the performance evaluated by automatic evaluation metrics and human evaluation.
Hierarchical Reinforcement Learning reinforcement-learning +2
1 code implementation • 30 Mar 2021 • Yitong Li, Timothy C. Green, Yunjie Gu
Based on this isomorphism, we revisit power system synchronization stability from a communication perspective and thereby establish a theory that unifies the synchronization dynamics of heterogeneous power apparatuses.
1 code implementation • 8 Feb 2021 • Yue Zhu, Yunjie Gu, Yitong Li, Timothy C. Green
This paper develops a grey-box approach to small-signal stability analysis of complex power systems that facilitates root-cause tracing without requiring disclosure of the full details of the internal control structure of apparatus connected to the system.
1 code implementation • 13 May 2021 • Yitong Li, Yunjie Gu, Timothy C. Green
The SG-dominated grid is traditionally analyzed in a mechanical-centric view which ignores fast electrical dynamics and focuses on the torque-speed dynamics.
1 code implementation • 27 May 2021 • Yitong Li, Yunjie Gu, Timothy C. Green
Power electronic converters for integrating renewable energy resources into power systems can be divided into grid-forming and grid-following inverters.
1 code implementation • 4 Apr 2022 • Yue Zhu, Yunjie Gu, Yitong Li, Timothy C. Green
Impedance models of power systems are useful when state-space models of apparatus such as inverter-based resources (IBRs) have not been made available and instead only black-box impedance models are available.
1 code implementation • 7 Jul 2022 • Yitong Li, Yunjie Gu
The emphasis on inertia for system stability has been a long-held tradition in conventional grids.
no code implementations • 5 Jul 2021 • Huanhai Xin, Kehao Zhuang, Pengfei Hu, Yunjie Gu, Ping Ju
Based on dual synchronous idea, a dual synchronous generator (DSG) control is applied in VSC to form inertial current source.