iEnergyPub Date : 2023-03-01DOI: 10.23919/IEN.2023.0008
Fei Feng;Yi-Fan Zhou;Peng Zhang
{"title":"Noise-resilient quantum power flow","authors":"Fei Feng;Yi-Fan Zhou;Peng Zhang","doi":"10.23919/IEN.2023.0008","DOIUrl":"https://doi.org/10.23919/IEN.2023.0008","url":null,"abstract":"Quantum power flow (QPF) offers an inspiring direction for overcoming the computation challenge of power flow through quantum computing. However, the practical implementation of existing QPF algorithms in today's noisy-intermediate-scale quantum (NISQ) era remains limited because of their sensitivity to noise. This paper establishes an NISQ-QPF algorithm that enables power flow computation on noisy quantum devices. The main contributions include: (1) a variational quantum circuit (VQC)-based alternating current (AC) power flow formulation, which enables QPF using short-depth quantum circuits; (2) NISQ-compatible QPF solvers based on the variational quantum linear solver (VQLS) and modified fast decoupled power flow; and (3) an error-resilient QPF scheme to relieve the QPF iteration deviations caused by noise; (3) a practical NISQ-QPF framework for implementable and reliable power flow analysis on noisy quantum machines. Extensive simulation tests validate the accuracy and generality of NISQ-QPF for solving practical power flow on IBM's real, noisy quantum computers.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"2 1","pages":"63-70"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/9732629/10144267/10144277.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50351962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
iEnergyPub Date : 2022-12-06DOI: 10.23919/IEN.2022.0048
Wenfeng Wan;Peng Zhang;Mikhail A. Bragin;Peter B. Luh
{"title":"Safety-assured, real-time neural active fault management for resilient microgrids integration","authors":"Wenfeng Wan;Peng Zhang;Mikhail A. Bragin;Peter B. Luh","doi":"10.23919/IEN.2022.0048","DOIUrl":"https://doi.org/10.23919/IEN.2022.0048","url":null,"abstract":"Federated-learning-based active fault management (AFM) is devised to achieve real-time safety assurance for microgrids and the main grid during faults. AFM was originally formulated as a distributed optimization problem. Here, federated learning is used to train each microgrid's network with training data achieved from distributed optimization. The main contribution of this work is to replace the optimization-based AFM control algorithm with a learning-based AFM control algorithm. The replacement transfers computation from online to offline. With this replacement, the control algorithm can meet real-time requirements for a system with dozens of microgrids. By contrast, distributed-optimization-based fault management can output reference values fast enough for a system with several microgrids. More microgrids, however, lead to more computation time with optimization-based method. Distributed-optimization-based fault management would fail real-time requirements for a system with dozens of microgrids. Controller hardware-in-the-loop real-time simulations demonstrate that learning-based AFM can output reference values within 10 ms irrespective of the number of microgrids.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"1 4","pages":"453-462"},"PeriodicalIF":0.0,"publicationDate":"2022-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/9732629/10007897/09972906.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50225730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
iEnergyPub Date : 2022-12-01DOI: 10.23919/IEN.2022.0056
Guanjun Zhang
{"title":"HVDC gas-insulated equipment for future bulk power delivery","authors":"Guanjun Zhang","doi":"10.23919/IEN.2022.0056","DOIUrl":"https://doi.org/10.23919/IEN.2022.0056","url":null,"abstract":"Entering the 21st century, the world's electric power structure will undoubtedly be advanced to one based on the rapidly growing, diversified and co-progressive renewable energy from a coal-dominated one. The development of deep- and far-sea offshore wind power is considered one such vital source for the generation of future energy infrastructure in China's 14\u0000<sup>th</sup>\u0000 Five-Year Plan (2021–2025) for the National Economic and Social Development of China. It is estimated that from 2022 to 2025, the newly installed offshore wind power capacity will be increased to more than 300 GW. The investment cost of the offshore platform can be significantly decreased by adopting small gas-insulated switchgear in conjunction with submarine cable, which is a novel strategy to build large-scale offshore wind power stations in the future. Furthermore, the clean energy transmission from south-eastern Tibet to the Greater Bay Area (±800 kV DC power transmission project) faces harsh natural environmental conditions such as snow-capped mountains and uninhabited areas. The gas-insulated power transmission line provides a superior option instead of the traditional outdoor power transmission lines and cables.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"1 4","pages":"393-393"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/9732629/10007897/10007878.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50351321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"China's 10-year progress in DC gas-insulated equipment: From basic research to industry perspective","authors":"Chuanyang Li;Changhong Zhang;Jinzhuang Lv;Fangwei Liang;Zuodong Liang;Xianhao Fan;Uwe Riechert;Zhen Li;Peng Liu;Jianyi Xue;Cheng Pan;Geng Chen;Lei Zhang;Zheming Wang;Wu Lu;Hucheng Liang;Zijun Pan;Weijian Zhuang;Giovanni Mazzanti;Davide Fabiani;Bo Liu;Shaohua Cao;Jianying Zhong;Yuan Deng;Zhenle Nan;Jingen Tang;Jinliang He","doi":"10.23919/IEN.2022.0050","DOIUrl":"https://doi.org/10.23919/IEN.2022.0050","url":null,"abstract":"The construction of the future energy structure of China under the 2050 carbon-neutral vision requires compact direct current (DC) gas-insulation equipment as important nodes and solutions to support electric power transmission and distribution of long-distance and large-capacity. This paper reviews China's 10-year progress in DC gas-insulated equipment. Important progresses in basic research and industry perspective are presented, with related scientific issues and technical bottlenecks being discussed. The progress in DC gas-insulated equipment worldwide (Europe, Japan, America) is also reported briefly.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"1 4","pages":"400-433"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/9732629/10007897/10007898.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50225724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
iEnergyPub Date : 2022-12-01DOI: 10.23919/IEN.2022.0019
Daniel Kirschen
{"title":"How a 30-year transition to carbon neutrality will affect the electricity supply costs?","authors":"Daniel Kirschen","doi":"10.23919/IEN.2022.0019","DOIUrl":"https://doi.org/10.23919/IEN.2022.0019","url":null,"abstract":"The Chinese government has set long-term goals for carbon neutrality and the development of renewable energy (RE). Despite the expected precipitous decline in the costs of RE technologies, the necessary massive investments in new RE capacities and the external costs of renewable intermittency will increase electricity costs. A group of researchers from Tsinghua University and Harvard University have developed a power system expansion model to comprehensively evaluate how a 30-year transition to carbon neutrality will affect these electricity supply costs. This model incorporates RE supply curves, operating security constraints, and the characteristics of various generation units to assess the cost variations accurately\u0000<sup>[1]</sup>\u0000.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"1 4","pages":"391-392"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/9732629/10007897/10007881.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50425719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
iEnergyPub Date : 2022-12-01DOI: 10.23919/IEN.2022.0054
Mingrui Li;Yingdong Wei;Yunzhi Lin;Xiaoqian Li;Chao Lu;Changle Wang;Zhanhe Li
{"title":"A fast power control method based on high-speed communication for the continuous co-phase traction power system","authors":"Mingrui Li;Yingdong Wei;Yunzhi Lin;Xiaoqian Li;Chao Lu;Changle Wang;Zhanhe Li","doi":"10.23919/IEN.2022.0054","DOIUrl":"https://doi.org/10.23919/IEN.2022.0054","url":null,"abstract":"Continuous co-phase traction power system is an effective method to eliminate neutral sections and provide high quality power for both the public grid and the catenary. The substations have the ability to provide cooperative support to each other to reduce capacity and improve system reliability. A fast power control method for substations is needed due to rapid load changes and low overload capability of the system. This paper proposes a fast power control method based on high-speed communication between substations, with additional transient power control to significantly improve the dynamic response of the system.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"1 4","pages":"395-399"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/9732629/10007897/10007876.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50225723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
iEnergyPub Date : 2022-12-01DOI: 10.23919/IEN.2022.0052
Richard Zhang
{"title":"Role of power electronics in Grid 3.0","authors":"Richard Zhang","doi":"10.23919/IEN.2022.0052","DOIUrl":"https://doi.org/10.23919/IEN.2022.0052","url":null,"abstract":"We are at dawn of a new era - an era where multiple strong market and technological transformations have called for reexamination of our current electric grid. It has opened the door for new thinking about the existing grid. People have been talking about the “grid of the future” for a few years now. What should this grid look like? What should be in it and why\u0000<sup>[1]</sup>\u0000? And how do we get there?","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"1 4","pages":"387-390"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/9732629/10007897/10007879.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50225727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
iEnergyPub Date : 2022-12-01DOI: 10.23919/IEN.2022.0053
Hang Li;Mingzhen Liu;Meicheng Li;Hyesung Park;Nripan Mathews;Yabing Qi;Xiaodan Zhang;Henk J. Bolink;Karl Leo;Michael Graetzel;Chenyi Yi
{"title":"Applications of vacuum vapor deposition for perovskite solar cells: A progress review","authors":"Hang Li;Mingzhen Liu;Meicheng Li;Hyesung Park;Nripan Mathews;Yabing Qi;Xiaodan Zhang;Henk J. Bolink;Karl Leo;Michael Graetzel;Chenyi Yi","doi":"10.23919/IEN.2022.0053","DOIUrl":"https://doi.org/10.23919/IEN.2022.0053","url":null,"abstract":"Metal halide perovskite solar cells (PSCs) have made substantial progress in power conversion efficiency (PCE) and stability in the past decade thanks to the advancements in perovskite deposition methodology, charge transport layer (CTL) optimization, and encapsulation technology. Solution-based methods have been intensively investigated and a 25.7% certified efficiency has been achieved. Vacuum vapor deposition protocols were less studied, but have nevertheless received increasing attention from industry and academia due to the great potential for large-area module fabrication, facile integration with tandem solar cell architectures, and compatibility with industrial manufacturing approaches. In this article, we systematically discuss the applications of several promising vacuum vapor deposition techniques, namely thermal evaporation, chemical vapor deposition (CVD), atomic layer deposition (ALD), magnetron sputtering, pulsed laser deposition (PLD), and electron beam evaporation (e-beam evaporation) in the fabrication of CTLs, perovskite absorbers, encapsulants, and connection layers for monolithic tandem solar cells.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"1 4","pages":"434-452"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/9732629/10007897/10007877.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50225731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}