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Regional Integrated Energy System Resilience Enhancement Strategy at the Integrated Stage of Disaster Response and Post-Disaster Recovery

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Journal of Shanghai Jiaotong University (Science) 2024年 1-13页

作者： You, Minghao Gu, Jie Liu, Shuqi Key Laboratory of Control of Power Transmission and Conversion of Ministry of Education Shanghai Jiao Tong University Shanghai200240 China

Deployment of integrated energy system is conducive to improving energy efficiency and achieving the transformation of the global energy system. However, recent appearance of extreme natural disasters poses a great challenge to the safe and stable operation of the integrated energy system. Therefore, the resilience of the integrated energy system, namely the ability to anticipate, withstand, respond to and recover to normal state, is to be enhanced urgently. This paper proposes a master-slave optimization model for the resilience enhancement of integrated energy system in the integrated stage of disaster response and post-disaster recovery, in view of the strong correlation between the two stages. The master model develops the optimal fault repair plan, and the sub model determines the optimal energy supply recovery scheme. Based on the master-slave model, which adopts the repair and operation state of the component as coupling variables, a coordinated optimization framework is constructed. Then, the master-slave model is merged into a two-stage robust optimization model for iterative solution in order to develop the optimal fault repair strategy and energy supply recovery scheme of the integrated energy system, enhancing its resilience in the integrated stage of disaster response and post-disaster recovery. © Shanghai Jiao Tong University 2024.

关键词： Optimization

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Automatic Coal-Rock Recognition by Laser-Induced Breakdown Spectroscopy Combined with an Artificial Neural Network

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Spectroscopy (Santa Monica) 2023年第2期38卷 23-30页

作者： Liu, Cong Jiang, Jiayan Jiang, Jianguo Zhou, Zhongzheng Ye, Shu Key Laboratory of Control of Power Transmission and Conversion Shanghai Jiao Tong University Shanghai China

Automatic coal-rock recognition (ACRR) is of considerable theoretical and practical significance for unmanned coal mining. To the best of our knowledge, this is the first study to assess laser-induced breakdown spectroscopy (LIBS) combined with an artificial neural network (ANN) for automatic coal-rock recognition. Each sample in this study was subjected to LIBS testing and spectrum collection 20 times in the air, and the average value was taken as the LIBS data. Spectral data were optimized and dimensionality reduction was performed using partial least-squares discriminant analysis (PLS-DA). The 10 selected wavelength lines were used to construct a simplified spectral model (SSM). The ANN based on SSM was designed to classify the coal and rock. The results demonstrated that LIBS combined with an ANN has a high recognition accuracy rate, providing a rapid and accurate coal-rock recognition method for unmanned coal mining. © 2023 Advanstar Communications Inc.. All rights reserved.

关键词： Laser induced breakdown spectroscopy

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Suspension of Australian National Electricity Market in 2022 Necessitates Mechanism Evolution Ensuring power Supply Security

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Journal of Modern power Systems and Clean Energy 2023年第2期11卷 674-679页

作者： Zhenfei Tan Hua Geng Xiaoyuan Xu Sijie Chen Zheng Yan Key Laboratory of Control of Power Transmission and Conversion Ministry of Educationand Shanghai Non-Carbon Energy Conversion and Utilization InstituteShanghai Jiao Tong UniversityShanghai 200240China

The National Electricity Market(NEM)in Australia was suspended during June 15-23,2022,with a primary attribution to the lack of available generation *** incident is noteworthy because it was the first market suspension in NEM’s history and took place in a major energy exporting *** this letter,we review the outline and impacts of the *** the perspectives of market regulation,electricity supply,and electricity demand,we identify three underlying causes of the market suspension and offer four recommendations for the market mechanism evolution to ensure power supply security.

关键词： Electricity market administered pricing power system security energy crisis demand response

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Inertia Market:Mechanism Design and Its Impact on Generation Mix

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Journal of Modern power Systems and Clean Energy 2023年第3期11卷 744-756页

作者： Jingwei Hu Zheng Yan Xiaoyuan Xu Sijie Chen Key Laboratory of Control of Power Transmission and Conversion Ministry of Educationand Shanghai Non-Carbon Energy Conversion and Utilization InstituteShanghai Jiao Tong UniversityShanghai 200240China

Increasing penetration of renewable energy generation poses a challenge to power system inertia *** is vital to provide long-term incentive signals to induce a generation mix with adequate inertia ***,existing literature rarely studies inertia incentive mechanisms or considers inertia constraints when making generation investment ***,we propose an inertia market to quantify the value of inertia and to remunerate inertia *** examine the impacts of the inertia market on generation mix,we then propose a stochastic bilevel generation investment equilibrium model that depicts a multi-leader and multi-follower Stackelberg *** lower level of the model considers the proposed inertia market,along with the energy,reserve,and capacity *** upper level considers multiple profit-maximizing strategic producers,and each producer is able to build gas-fired generators,wind generators,and energy *** experiments demonstrate that a generation mix with adequate inertia supply can be induced with the proposed inertia market whereas there can be inertia shortage without the inertia ***,considering carbon taxes,it is more cost-competitive to invest in wind resources with virtual inertia facilities than to substitute wind resources by thermal ***,the introduction of an inertia market does not significantly reduce wind generation shares but boosts virtual inertia facility *** findings imply a future power system powered by fully decarbonized power resources with adequate inertia.

关键词： Generation mix generation investment equilibrium inertia market Stackelberg game virtual inertia

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Review of Numerical Simulation of Charge Transport in Polymer Insulation Under a High Electric Field and Its Application

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IEEE Electrical Insulation Magazine 2024年第2期40卷 14-32页

作者： Zhu, Xinyang Wu, Jiandong Wang, Yalin Yin, Yi Department of Electrical Engineering Shanghai200240 China Key Laboratory of Control of Power Transmission and Conversion Ministry of Education SJTU Shanghai200240 China

This article addresses the process of charge transport under a high electric field and presents an overview of the research on simulation models represented by the bipolar charge transport (BCT) model in terms of (1) the research status of simulation models, (2) the construction of physical models, and (3) engineering applications. Focusing on the simulation of charge transport under high electric field, the limitations of the current research and the prospects for future research are further discussed. © 2006 IEEE.

关键词： Carrier transport

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Resilience-oriented transmission Expansion Planning with Optimal transmission Switching Under Typhoon Weather

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CSEE Journal of power and Energy Systems 2024年第1期10卷 129-138页

作者： Yang Yuan Heng Zhang Haozhong Cheng Zheng Wang Key Laboratory of Control of Power Transmission and Conversion Ministry of EducationElectrical Engineering DepartmentShanghai Jiao Tong UniversityShanghaiChina State Grid East China Branch ShanghaiChina

This paper presents resilience-oriented transmission expansion planning(RTEP)with optimal transmission switching(OTS)model under typhoon *** proposed model carefully considers the uncertainty of component vulnerability by constructing a typhoon-related box uncertainty set where component failure rate varies within a range closely related with typhoon ***,a min-max-min model is developed to enhance transmission network resilience,where the upper level minimizes transmission lines investment,the middle level searches for the probability distribution of failure status leading to max worst-case expected load-shedding(WCEL)under typhoon,and the lower level optimizes WCEL by economic dispatch(ED)and OTS.A nested decomposition algorithm based on benders decomposition is developed to solve the *** studies of modified IEEE 30-bus and 261-bus system of a Chinese region illustrate that:a)the proposed RTEP method can enhance resilience of transmission network with less investment than widely used RTEP method based on attacker and defender(DAD)model,b)the influence of OTS on RTEP is closely related with contingency severity and system scale and c)the RTEP model can be efficiently solved even in a large-scale system.

关键词： Decomposition algorithm optimal transmission switching resilience transmission expansion planning uncertainty vulnerability

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Resonance Characterization and Frequency-divided Compensation Strategy for Heterogeneous Inverters-paralleled System

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Journal of Modern power Systems and Clean Energy 2025年第1期13卷 42-54页

作者： Hongbin Lin Pingjuan Ge Hailiang Xu Yuhan Duan the College of New Energy China University of Petroleum(East China)Qingdao 266580China the Key Laboratory of Control of Power Transmission and Conversion Ministry of EducationShanghai Jiao Tong UniversityShanghai 200240China

Currently,the dominant trend in new energy power supply systems is the heterogeneous inverters-paralleled system(HIPS),which is a combination of grid-following(GFL)and grid-forming(GFM)*** dynamic characteristics of different inverters in HIPS and the differences between GFL and GFM inverters undoubtedly increase the difficulty of the stability analysis and coordinated *** paper establishes an interactive admittance matrix model of HIPS,fully considers the interactive effects among different inverters,and explores the multi-dimensional resonance characteristics of HIPS by utilizing the modal analysis *** achieve the coordinated control and oscillation suppression among different inverters,a frequency-divided compensation strategy is proposed,which divides the operation modes of HIPS into three categories,i.e.,GFM,GFL,and hybrid ***,the frequency division boundary is determined based on the resonance characteristics of GFL and GFM inverters,with the operation modes of HIPS being dynamically adjusted according to the harmonic power ***,the simulation and experimental results demonstrate that the HIPS can flexibly adjust the operation modes to adapt to the complex conditions after adopting the frequency-divided compensation strategy and suppressing the oscillation frequency ratio to less than 2%,ensuring the safe and reliable operation of HIPS.

关键词： Grid-following(GFL)inverter grid-forming(GFM)inverter heterogeneous inverters-paralleled system(HIPS) frequency-divided compensation strategy

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Assessment of Wind and Solar Capacity Credibility Under Extreme Weather Conditions

Assessment of Wind and Solar Capacity Credibility Under Extr...

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2024 IEEE Sustainable power and Energy Conference, iSPEC 2024

作者： Li, Pengzhan Liu, Lu Zhang, Xiaohu Xu, Lin Lou, Wei Cheng, Haozhong Key Laboratory of Control of Power Transmission and Conversion Shanghai China East China Power Grid Company Shanghai China

ISBN: (纸本)9798350395075

At present, credible capacity is widely used to measure the contribution of wind and solar resources to the redundancy of the power system. However, the increasingly frequent extreme weather in recent years has seriously affected the accuracy of credible capacity calculation based on typical scenarios, and it is urgent to scientifically evaluate the credible capacity of wind and solar under extreme weather. This article proposes a credibility assessment method for wind and solar capacity under extreme weather. This method uses the kmeans++ clustering algorithm to mine extreme weather scenarios in massive meteorological sample information, takes wind power and photovoltaic output and load under extreme weather scenarios as input data, and realizes the credibility assessment of wind and solar capacity under extreme weather scenarios through the process of multi-dimensional copula function modeling, sampling, and reliability calculation. The article verifies the effectiveness of the method by taking a certain actual regional power grid as an example, and compares the credibility of wind and solar capacity under extreme weather scenarios with typical scenarios such as quarters. The difference of 50% shows that it is of great significance for ensuring the security and planning of power systems. © 2024 IEEE.

关键词： Windmill

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Modulation and Realization of a Current-fed Dual Active Bridge DC-DC Converter 9

Modulation and Realization of a Current-fed Dual Active Brid...

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9th Asia Conference on power and Electrical Engineering, ACPEE 2024

作者： Yujing, Zhao Rui, Li Qing, Gu Shanghai Jiao Tong University Key Laboratory of Power Control Transmission and Conversion Shanghai China

ISBN: (纸本)9798350309638

With the continuous development of new energy, the demand for energy storage devices is increasing. The current-fed dual active bridge DC-DC converter is an important converter used in these devices. Among many topologies, this article studies the staggered parallel dual active full-bridge converter topology with high-frequency transformer, and conducts a detailed analysis of its working principle and modulation strategy. This paper constructs a three-degree-of-freedom modulation strategy. Duty cycle and phase shift modulation are combined for a wide voltage adjustment range. Duty cycle of low-voltage-side switches, external phase shift angle and internal phase shift angle of high-voltage side are used as degrees of freedom to implement a low-current-ripple and wide-voltage-range modulation strategy. This article analyzes operating modes of the circuit based on this strategy, and calculates boundary conditions of the state quantities and variation ranges of different operating modes. This strategy has been verified on the hardware platform. It can maintain transformer voltage matching when the DC voltage on both sides changes and reduce the current stress of electronic devices. © 2024 IEEE.

关键词： DC-DC converters

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Resilience-oriented Hardening and Expansion Planning of transmission System Under Hurricane Impact

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CSEE Journal of power and Energy Systems 2024年第4期10卷 1746-1760页

作者： Jing Zhou Heng Zhang Haozhong Cheng Shenxi Zhang Lu Liu Zheng Wang Xiaohu Zhang Key Laboratory of Control of Power Transmission and Conversion Ministry of EducationElectrical Engineering DepartmentShanghai Jiao Tong UniversityShanghai 200240China State Grid East China Branch Shanghai 200120China

In this paper,we propose a two-stage transmission hardening and planning(TH&P)model that can meet the load growth demand of normal scenarios and the resilience requirements of hurricane-induced damage *** better measure the resilience requirements,the proposed TH&P model includes two resilience assessment indexes,namely,the load shedding(LS)under the damage scenario and the average connectivity degree(ACD)at different *** first-stage model,which aims to meet the load growth demand while minimizing the LS,is formulated as a mixed-integer linear program(MILP)to minimize the total planning and hardening cost of transmission lines,the operating cost of generators,and the penalty cost of wind power and load shedding in both normal and damage *** second-stage model aims to further improve the ACD when the ACD of the scheme obtained from the first-stage model cannot reach the ***,the contribution of each transmission line to the ACD is calculated,and the next hardened line is determined to increase the *** process is repeated until the ACD meets the *** studies of the modified IEEE RTS-24 and two-area IEEE reliability test system-1996 indicate the proposed TH&P model can meet the requirements for both normal and damage scenarios.

关键词： Hardening hurricane disaster resilience transmission expansion planning

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