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检索条件"任意字段=2023 IEEE International Conference on Advanced Power System Automation and Protection, APAP 2023"

共 2132 条记录，以下是11-20 订阅

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Traveling Wave Differential protection Applied to Renewable Energy and Flexible DC Connected Lines

Traveling Wave Differential Protection Applied to Renewable ...

引用

2023 ieee international conference on advanced power system automation and protection, apap 2023

作者： Chen, Binshu Dai, Yuanyuan Dong, Xinzhou Wang, Haozong Li, Xinyuan Huang, Tianxiao Tsinghua University Department of Electrical Engineering Beijing China STATE GRID Shanghai Pudong Electric Power Supply Company Shanghai China STATE GRID Jibei Electric Power Company Limited Beijing China

ISBN: (纸本)9798350306668

With the rapid consumption of non-renewable energy such as fossil energy, countries around the world are vigorously developing wind, light, geothermal and other renewable energy. Since most of the large-scale renewable energy power stations are located in remote areas, in order to better connect renewable energy to the grid, renewable energy is widely used through the flexible DC connection transmission scheme. The AC line of the renewable energy power station incorporated into the flexible DC double ended converter power supply has new fault characteristics. This paper introduces the application of traveling wave differential protection in this scenario, and uses Euclid distance to characterize the waveform similarity, and adopt normalization method to further optimize the protection performance and protection setting. Finally, the effectiveness of the protection algorithm is verified through simulation. © 2023 ieee.

关键词： Electric power transmission

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protection Configuration and Circuit Optimization Schemes of 220kV Line Transformer Group

Protection Configuration and Circuit Optimization Schemes of...

引用

2023 ieee international conference on advanced power system automation and protection, apap 2023

作者： Li, Yinyin Shi, Hengchu You, Hao Chen, Xiaofan Yang, Qiaowei Shi, Wenbo China Southern Power Grid Yunnan Electric Power Dispatching and Control Center Kunming China

ISBN: (纸本)9798350306668

Currently, the green and low-carbon transformation of electricity is accelerating, and the cumulative installed scale of new energy is constantly expanding. In order to save investment, some 220kV new energy plants adopt line transformer group wiring, and separate circuit breakers protection are required to achieve failure protection function. This article proposes two types of protection configuration and circuit optimization schemes for 220kV line transformer groups. By optimizing the secondary circuit, the circuit by which line protection actions to trip the main transformer is added, and separate circuit breaker protection can no longer be configured. After optimization, it can achieve dual failure protection functions, avoid the risk of no failure protection or dead zone protection caused by improper circuit breaker protection configuration, save investment costs, and reduce equipment operation and maintenance costs, enhance reliability of protection. © 2023 ieee.

关键词： Electric circuit breakers

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Differential protection for Double-Ended Weak-Infeed Transmission Lines Based on Time-Domain Integral Value of Traveling Waves

Differential Protection for Double-Ended Weak-Infeed Transmi...

引用

2023 ieee international conference on advanced power system automation and protection, apap 2023

作者： Zhaohui, Chen Xiaobing, Ding Qingzhong, Gan Xu, Chen Xinyuan, Li Shenxing, Shi Xinzhou, Dong Dispatching Center of China Southern Power Grid China Southern Power Grid Guangzhou China Tsinghua University Department of Electrical Engineering Beijing China

ISBN: (纸本)9798350306668

For MMC-HVDC systems connected with PV power plants, the converters on both sides of the AC transmission line will adopt different fault-ride-through strategies, making the fault characteristics of the line complicated. Under complex fault characteristics, traditional protection schemes such as current differential protection face challenges such as the reduced sensitivity. In this paper, a differential protection scheme is proposed based on fault traveling wave theory, and an auxiliary criterion using wavelet transform is proposed to ensure accurate identification of fault interval while achieving high sensitivity. The proposed scheme has been verified in PSCAD/EMTDC, and simulation results show that the proposed method is a highly sensible protection scheme suitable for double-ended weak-infeed lines between large-scale renewable energy and MMC stations. © 2023 ieee.

关键词： Wavelet transforms

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A Non-Pilot protection Scheme for Transmission Lines Connected to Inverter-Interfaced power Source

A Non-Pilot Protection Scheme for Transmission Lines Connect...

引用

2023 ieee international conference on advanced power system automation and protection, apap 2023

作者： Jin, Bo-Liang Dong, Xin-Zhou Tsinghua University State Key Laboratory of Power System and Generation Equipment Department of Electrical Engineering Beijing China

ISBN: (纸本)9798350306668

The fault characteristics of transmission lines connected to inverter-interfaced power sources such as photovoltaic stations and permanent magnetic synchronous generator are fundamentally different from traditional power grids, and traditional protection methods have adaptability issues. The protection on the system side and the inverter side of the transmission line has inconsistent characteristics of sensitivity, reliability, and speed. When the system side protection operates and controls breaker tripping, the distance protection on the station side then can operate reliably in a longer time. In this regard, this article proposes a non-pilot protection scheme that utilizes low sampling rate single ended electrical quantities. For different types of faults, zero sequence current, negative sequence current, and voltage harmonic components are used as acceleration criteria for distance protection, which can reliably accelerate the local distance protection action after the opposite breaker trips. A photovoltaic station transmission system model is built in PSCAD, and the simulation results verify the effectiveness of the proposed scheme. © 2023 ieee.

关键词： Electric lines

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Traveling Wave protection for the AC Transmission Lines between MMC Stations and Renewable Energy Sources

Traveling Wave Protection for the AC Transmission Lines betw...

引用

2023 ieee international conference on advanced power system automation and protection, apap 2023

作者： Li, Xinyuan Li, Wenzhong Chen, Binshu Wang, Haozong Dong, Qihuan Dong, Xinzhou Tsinghua University Department of Electrical Engineering Beijing China

ISBN: (纸本)9798350306668

Several MMC-HVDC systems with renewable energy sources connected have been constructed in the past decades. For the AC transmission lines between the MMC stations and the renewable energy sources, fault-ride-through strategies at both ends will lead to complicated fault characteristics. Specifically, the current amplitudes are restricted and the phase angles are controlled, the characteristics decrease the reliability and sensitivity of traditional relay protection. This paper proposes a differential protection based on the traveling wave theory, which focuses on the transmission lines and excludes the influence of the power sources outside the protected area. Criterion is constructed based on the integral value of the amplitude of the traveling wave differential current. The proposed protection is verified in a PSCAD simulation model. Test results prove that, compared with traditional current differential protection, the traveling wave differential protection has advantages in reliability, and the ability to withstand fault resistance. © 2023 ieee.

关键词： Renewable energy resources

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An Online Fault Location Method for DC Distribution Networks Using Adaptive Kalman Filter

An Online Fault Location Method for DC Distribution Networks...

引用

2023 ieee international conference on advanced power system automation and protection, apap 2023

作者： Zexue, Yu Zhiguo, Hao Ting, Wang Xi'An Jiaotong University State Key Laboratory of Electrical Insulation and Power Equipment Xi'an China School of Electrical and Electronic Engineering Nanyang Technological University Singapore Singapore

ISBN: (纸本)9798350306668

Accurate and timely fault location is a crucial technique in the DC distribution network for system stability and power restoration. In this paper, a double-ended fault location method based on parameter estimation using an adaptive Kalman filter is proposed. First, a DC line model considering both line-to-ground and line-to-line faults is established, from which the mathematical relation between line voltage, current and reactor voltage is derived. Then a fault location method based on adaptive Kalman filter algorithm is introduced to estimate the fault parameter. At last the effectiveness of the proposed method is verified in different fault scenarios in a multi-terminal DC distribution network with MATLAB/Simulink. © 2023 ieee.

关键词： Parameter estimation

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Reactive power Optimization Control Strategy of AC Weak Grid Considering Small Hydro-power Access

Reactive Power Optimization Control Strategy of AC Weak Grid...

引用

2023 ieee international conference on advanced power system automation and protection, apap 2023

作者： Yan, Qunmin Ma, Ruiqing Zhu, Juanjuan An, Chen School of Automation Northwestern Polytechnical University Shaanxi Province Xi'an China School of Electrical Engineering Shaanxi University of Technology Shaanxi Province Hanzhong China

ISBN: (纸本)9798350306668

Aiming at the problems of voltage fluctuations in distribution network and power quality caused by the large-scale access of small hydro-power under weak grid conditions, a reactive power optimization control strategy was proposed. Based on the analysis of the operating characteristics of small hydro-power, especially the voltage characteristics, a multi-objective reactive power control model of distribution network of small hydro-power was established. Combined with the improved Bat-Algorithm, to avoid the algorithm falling into local optimization, probabilistic elite pool disturbance strategy was introduced, by setting up the external storage device and using the phasing-out mechanism to sort the crowded distance of the calculated target value, and the Pareto optimal solution set of the model was finally obtained. Through the application of ieee33 node system for simulation, test results show that the optimization control strategy can effectively solve the problems of network loss optimization and voltage fluctuations. The proposed method has theoretical and practical significance for the control operation of distribution networks containing distributed small hydro-power. © 2023 ieee.

关键词： power quality

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Comparative Analysis of the New Energy Development in Major international Economies

Comparative Analysis of the New Energy Development in Major ...

引用

2023 ieee international conference on advanced power system automation and protection, apap 2023

作者： Xiao, Shuwen Kang, Xiaoning Cui, Jinxu Jia, Shiduo Tian, Bowen Xi'An Jiaotong University Xi'An Jiaotong University Shaanxi Key Laboratory of Smart Grid Xi'an China

ISBN: (纸本)9798350306668

Developing new energy has a positive impact on promoting environmental sustainability and improving the living environment for human beings. Promoting the comprehensive upgrading of energy structure and vigorously developing new energy is an important way for China to achieve the 'dual carbon' goal. This article analyzes the development of new energy in major international economies such as Germany, France, Spain, the United Kingdom, the United States, and Japan based on three dimensions of new energy development indicators, policies in the field of new energy, and consumption measures. Based on their development characteristics, it provides new ideas for China's new energy development, thereby improving China's level of new energy consumption and promoting the healthy development of new energy in China. © 2023 ieee.

关键词： Energy efficiency

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A Study on the system Strength Evaluation Index Considering the Interaction between Renewable Energy

A Study on the System Strength Evaluation Index Considering ...

引用

2023 ieee international conference on advanced power system automation and protection, apap 2023

作者： Kim, Beomju Im, Seunghyuk Lee, Byongjun Korea Univ. Dept. of Electrical Engineering Seoul Korea Republic of

ISBN: (纸本)9798350306668

In order to reduce greenhouse gas emissions, the connection of renewable energy to power system is increasing. Renewable energy such as wind power and photovoltaic are inverter-based resources (IBRs) that provide limited short-circuit current unlike synchronous generators, and the limited short-circuit current adversely affects voltage after disturbance. Describes Short Circuit Ratio(SCR), a system strength evaluation index used in power systems when connecting inverter-based resources, and Weighted Short Circuit Ratio(WSCR) and Composite Short Circuit Ratio(CSCR), system strength evaluation indexes considering the interaction between inverter-based resources caused by Phased-Locked Loop(PLL) control characteristics is analyzed. © 2023 ieee.

关键词： Gas emissions

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Transmission Line Differential protection Based on Numerical Solution of Partial Differential Equations

Transmission Line Differential Protection Based on Numerical...

引用

2023 ieee international conference on advanced power system automation and protection, apap 2023

作者： Liu, Zhiquan Liu, Yu Lu, Dayou Yang, Yayu Fan, Rui Center for Intelligent Power and Energy Systems School of Information Science and Technology ShanghaiTech University China China Shanghai Maritime University Department of Electrical Engineering China University of Denver United States

ISBN: (纸本)9798350306668

Current differential protection is a widely adopted and effective high-voltage AC transmission line protection scheme. The long distance of the transmission line determines that the distributed parameters and corresponding capacitive currents are not negligible. In fact, the physical laws of a distributed parameter transmission line can be expressed as a set of partial differential equations (PDEs). In this paper, a time-domain current differential protection method based on two-terminal electrical quantities and the PDE line model is proposed. The method does not depend on the power frequency phasors, can accurately compensate line capacitive current, and can effectively improve the protection speed and sensitivity. Numerical experiments validate the effectiveness and reliability of the proposed method. Additionally, the proposed method demonstrates satisfactory real-time performance under relatively low sampling rates (4k Hz). © 2023 ieee.

关键词： Partial differential equations

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