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Jun Zhang - IEEE Xplore Author Profile

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With the continuous growth of global energy demand and the transformation of the energy mix, the power system is facing unprecedented challenges, including the integration of renewable energy, the intelligent upgrading of the grid, and the enhancement of power supply reliability. Against this backdrop, this paper discusses the challenges faced by the power system with the integration of renewable ...Show More
The advancement of artificial intelligence technology offers a novel approach to addressing the complexities inherent in electricity regulation. As the application of artificial intelligence technology in power regulation continues to expand, there is a growing demand for comprehensive evaluations of this technology's capabilities. In light of this context, this paper introduces an objective quant...Show More
The application of artificial intelligence (AI) technology in active power corrective control (APCC) within power systems can significantly enhance decision-making efficiency, high-dimensional data processing capability, and the intelligence level of the power grid. By establishing mechanisms for safety operation decision support analysis and autonomous knowledge learning, AI can improve the power...Show More
This paper proposes a TCN-Transformer hybrid model based on the Temporal Convolutional Network (TCN) and the Transformer model to enhance the accuracy of photovoltaic (PV) power forecasting. Given the volatility and randomness of photovoltaic power generation, accurate power prediction is crucial for the scheduling and stability of the power system. The model combines TCN’s sensitivity in capturin...Show More
The steady-state security region (SSR) offers robust support for the security assessment and control of new power systems with high uncertainty and fluctuation. However, accurately solving the steady-state security region boundary (SS-RB), which is high-dimensional, non-convex, and non-linear, presents a significant challenge. To address this problem, this paper proposes a method for approximating...Show More
To address power grid congestion events stemming from the uncertainty of wind power output, this paper presents a risk early warning model for power grid congestion events based on probability power flow. Employing the deep mixture density network algorithm to compute probability power flow (PPF) enables accurate early warning of power system congestion events. Experimental results conducted on th...Show More
The ever-increasing penetration of Electric Vehicles (EVs) has emerged as an evident challenge within the Power Distribution System (PDS). Existing Distribution System State Estimation (DSSE) models are constrained by the low-observability and often neglect the spatio-temporal correlations inherent in the PDS. To address this, our study proposes a robust learning architecture named meta physics-in...Show More
With the large-scale grid connection of new energy sources, the possibility of local power flow off-limit evolving into a global security risk has significantly increased, and the risk of power flow off-limit faults in the new transmission network is also increasing. However, traditional physical models for calculating power flow off-limit face issues such as slow calculation speed, high complexit...Show More
The intermittency and randomness of wind power output have a negative impact on the stable operation of the power grid. Accurately modeling the uncertainty of wind power output is essential, and the primary method to achieve this is through scenario generation. Traditional scenario generation methods suffer from limitations such as low accuracy and high computational complexity. In this paper, a n...Show More
With the promotion of energy security strategy and the access of the high penetration of renewable energy, the related methods of situational awareness in the traditional transmission network may be inapplicable for modern power grids. For the early warning and location of the cascading faults caused by power flow shift, a novel method for security situation prediction in the transmission network ...Show More
Network alignment (NA) that identifies equivalent nodes across networks is an effective tool for integrating knowledge from multiple networks. The state-of-the-art NA methods learn inter-network node similarities based on labeled anchor links, which are costly, time-consuming, and difficult to acquire. Therefore, a few unsupervised network alignment (UNA) methods propose solving NA problems withou...Show More
With the wake of development of the market-oriented power sector reform and the gradual deepening of new energy, the energy structure and its supply-demand relationship in China are experiencing dramatic changes. Under such circumstance, the allocation of electric power and its surplus-shortage coordination are facing unprecedented challenges. However, the market trading mechanism concerning the s...Show More
The new-type power system with the high penetration of renewable energy accessed is of strong uncertainty and complexity, which can be challenging for the traditional methods to control. It's significant to introduce artificial intelligence to meet the challenge. This paper proposes a cloud-edge collaborative framework based on multi-agent deep reinforcement learning for power system regulation. U...Show More
As an important form of renewable energy integrated to the power system, distribution network is being challenged by voltage violation and network loss increase. Currently, model-based Vol-Var control (VVC) methods are widely used to reduce voltage violation and network loss. However, model-based methods need accurate parameters of distribution network. In practice, accurate model is difficult to ...Show More
Load forecasting is an essential task in the power industry as an important means to assist the grid to balance supply demand. A large amount of user data monitored by smart grids can support deep learning models for load prediction, but accurate and fine-grained user data may reveal consumers' electricity consumption behaviors, which brings privacy and security issues. Federated Learning (FL) is ...Show More
The worldwide COVID-19 pandemic has caused an enormous impact on the operation mode of human society. Such sudden events bring sharp fluctuations and data inadequacy in datasets of several areas, which leads to challenges in solving related problems. Traditional deep learning models like CNN have shown relatively poor performance with small datasets during the COVID-19 pandemic. This is because th...Show More
Transient stability assessment (TSA) plays an essential role in the safe and stable operation of power system. The traditional time-domain simulation method and direct method have great limitation in modeling and computing, which can not meet the need of fast and accurate assessment of power system stability. Therefore, combined physics model with data-driven algorithm, this paper proposes a physi...Show More
With the continuous expansion of power grid scale and the continuous implementation of Energy Internet construction, the long-distance and large-capacity electric energy exchange between regional power grids is increasingly frequent, which makes the stability problem to a wide range of attention. Therefore, this paper proposes a transient voltage control method based on physics information and rei...Show More
Wind power has great uncertainty and short-term wind power forecasting technology can provide great help to power system scheduling after wind power integration. In this paper, a Convolutional neural network - bidirectional long and short-term memory network combination model (CNN-BiLITM) based on feature selection is proposed. Firstly, high correlation feature parameters were optimized based on e...Show More
Knowledge graphs (KGs) have been widely accepted as powerful tools for modeling the complex relationships between concepts and developing knowledge-based services. In recent years, researchers in the field of power systems have explored KGs to develop intelligent dispatching systems for increasingly large power grids. With multiple power grid dispatching knowledge graphs (PDKGs) constructed by dif...Show More
Corrective control becomes more and more important for power systems due to the increasing penetration of renewable energy. As an effective method in control problems, the Reinforcement learning method is considered to provide decisions for corrective control in power networks. However, the large size of action and state space, as well as the sparse reward problem in corrective control limits the ...Show More
Power system corrective control is a great important strategy to ensure the safety of a grid; however, with the high penetration of distributed energy resources such as solar, wind, hydro, etc., the difficulty of control with active correction of power system dramatically increases. In the mean times, model-free methods such as Deep Reinforcement Learning (DRL) are being extensively studied by man...Show More
As a key infrastructural technology, Industrial Internet of Things (IIoT) and its related techniques have emerged in the age of Industrial Internet. Among them, an increasing popular and attractive federated edge learning (FEL) mechanism, which performs data analysis and inference at the edge devices distributedly, and aggregates local FEL units at a centralized controller, is introduced to meet t...Show More
Artificial intelligence (AI) technology has become an important trend to support the analysis and control of complex and time-varying power systems. Although deep reinforcement learning (DRL) has been utilized in the power system field, most of these DRL models are regarded as black boxes, which are difficult to explain and cannot be used on occasions when human operators need to participate. Usin...Show More
With the widespread application of artificial intelligence (AI) technologies in power systems, the properties of lack of reliability and transparency for AI technologies have revealed gradually. Here, how to build a trustworthy-AI framework based on the power system is the focus. Due to the multidimensional and heterogeneous information of power grid data, the heterogeneous graph attention network...Show More