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检索条件"机构=Key Lab for Power System Protective Relaying Real Time Digital Simulation of Guangdong Power Grid"

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Operation Condition Assessment Method and Its Practical Implementation for Protection systems 8

Operation Condition Assessment Method and Its Practical Impl...

引用

8th IEEE International Conference on Advanced power system Automation and Protection, APAP 2019

作者： Liu, Kun Li, Yiquan Chen, Qiaoping Liu, Wei Wang, Yuxue Liu, Shidan Wang, Zengchao Wang, Feng Wu, Ziliang Suo, Jianglei Yuan, Liangrong Tan, Qian Dispatching and Controlling Center of Guangdong Power Grid Guangzhou510600 China Key Lab for Power System Protective Relaying Real Time Digital Simulation of Guangdong Power Grid Guangzhou510600 China

ISBN: (纸本)9781728117225

A well-monitored and reasonable-assessed protection system can lead to the improved operation and reliability of power systems. In this paper, a systematic and efficient operation condition assessment (OCA) method and its practical implementation for protection systems are proposed. Considering the device configuration and information transmission scheme, a protection system operation condition model (PSOCM) is developed. Based on the PSOCM, an OCA method is designed to assess the statuses of devices, information flows, information transmission branches and relay functions. To verify the effectiveness of the proposed method, a master-substation operation condition assessment system (MS-OCAS), which utilizes real-time monitoring and other raw data, is demonstrated. As shown by the experimental results for a 110 kV IEC 61850-based substation, the proposed method and system can realize whole-view OCA of protection systems and can dramatically increase the maintenance efficiency. © 2019 IEEE.

关键词： Condition monitoring

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Research on the self-configuration technology of the whole station simulation test of intelligent substation 10

Research on the self-configuration technology of the whole s...

引用

10th China International Conference on Electricity Distribution, CICED 2022

作者： Liu, Kun Huang, Minghui Li, Yiquan Liu, Shidan Wu, Ziliang Suo, Jianglei Dispatching and Controlling Center of Guangdong Power Grid Co. Ltd Key Lab for Protective Relaying Real Time Digital Simulation of Guangdong Power Grid Co. Ltd Guangzhou China

ISBN: (数字)9781665452687

ISBN: (纸本)9781665452687

The signal configuration workload of the whole station simulation test of the intelligent substation is large, and the non-standard signal model of the secondary equipment makes it difficult to realize the automatic signal configuration. In order to solve the above problems, this paper proposes a self-configuration technology of the whole station simulation test of intelligent substation. Based on the signal configuration requirements of the whole station simulation test and the relevant specifications of relay protection, a standardized secondary equipment signal model is established. Based on the primary main wiring diagram of the substation, the unconfigured SSD file is generated. The improved edit distance similarity algorithm is used to realize the automatic mapping of the secondary equipment signal model to the standardized secondary equipment signal model, so as to realize the automatic configuration of the simulation test of the whole station. The actual example shows that the configuration method proposed in this paper can overcome the problem of non-standard signal models of secondary equipment of different manufacturers, and realize the automatic configuration of the simulation test signal of the whole station based on the similarity calculation of the signal model of the secondary equipment. © 2022 IEEE.

关键词： Electric power system protection

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Experimental Research on Typical Single-Phase High Resistance Grounding Fault Detection Methods in Resonant Grounding Distribution system 8

Experimental Research on Typical Single-Phase High Resistanc...

引用

8th IEEE International Conference on Advanced power system Automation and Protection, APAP 2019

作者： Cui, Xin Wang, Bin Dong, Xinzhou Liu, Kun Tsinghua University Key Lab of Control and Simulation of Power Systems and Generation Equipment Department of Electrical Engineering Beijing China Key Lab for Power System Protective Relaying Real Time Digital Simulation of Guangdong Power Grid Dispatching and Controlling Center of Guangdong Power Grid Guangzhou China

ISBN: (纸本)9781728117225

The problem of high resistance grounding fault detection in resonant grounding system is always the pain point and difficulty in the field of power system research. To solve the problem, based on PSCAD software, this paper firstly establishes a typical distribution system model, and analyzes the relationship between the transient component, traveling wave component and the fault initial angle, transition resistance value and arc. Secondly, this paper analyzes the effect of the main fault detection methods such as transient methods and travelling wave method, and gives the effective domain of different detection methods. Above analysis establishes a complete systematic test scheme for the high resistance grounding fault detection, and provides an effective test support for the subsequent effectual fault detection method for high resistance grounding fault. © 2019 IEEE.

关键词： Fault detection

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Research on Multi system Collaborative Test Technology for Baseization Commissioning

Research on Multi System Collaborative Test Technology for B...

引用

2023 International Conference on power system Technology, powerCon 2023

作者： Liu, Kun Huang, Minghui Li, Yiquan Liu, Shidan Wu, Ziliang Power Dispatch Control Center of Guangdong Power Grid Co. Ltd Key Lab for Protective Relaying Real Time Digital Simulation of Guangdong Power Grid Co. Ltd. Guangzhou China

ISBN: (纸本)9798350300222

The on-site commissioning is limited by various conditions such as civil engineering, construction period, and personnel, and the commissioning time is very tight. For the new power system field, the enrichment and standardization of various models and configurations, the high concentration of business data, and the standardization of application functions have put forward an urgent demand for a highly centralized baseization commissioning mode. Propose a baseization commissioning method to carry out the commissioning of secondary equipment in the substation at a fixed commissioning base, replacing factory joint commissioning and most on-site commissioning work. This mode can simplify the commissioning process, improve commissioning efficiency, and reduce on-site commissioning workload. Further analyzing the characteristics of the baseization commissioning mode, a multi system collaborative test technology based on configuration method is proposed, which can further optimize the baseization commissioning, provide reliable solutions and technical means for the efficient application of baseization commissioning, and also provide technical reserves for the intelligent commissioning of new power systems. © 2023 IEEE.

关键词： Standardization

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Research on Test Data Management and Application Technology of Relay Protection for New power system

Research on Test Data Management and Application Technology ...

引用

2023 International Conference on power system Technology, powerCon 2023

作者： Liu, Kun Huang, Minghui Li, Yiquan Liu, Shidan Wu, Ziliang Guangdong Power Grid Co. Ltd. Power Dispatch Control Center of Guangdong Power Grid Co. Ltd Key Lab for Protective Relaying Real Time Digital Simulation Guangzhou China

ISBN: (纸本)9798350300222

In the 14th Five-Year Plan, China Southern power grid Corporation proposed the large-scale construction of smart substations to provide support for the construction of new power systems. However, there are problems in the automatic testing of relay protection in smart substations, such as manual organization of test cases and reports, lack of effective management and application of test data, manual judgment of test results, and manual organization of test reports, which reduce the efficiency and reliability of automatic relay protection testing and hinder the development of intelligent substation. In order to solve this problem, this paper proposes a data management and application technology of relay protection test in the whole life cycle. Based on the analysis of the whole life cycle test data of relay protection, the test case management flow is established, and the tamper proof test report technology and test report encryption technology based on test process data are proposed to realize the control and control of test data, test cases and test reports in the whole life cycle of relay protection in smart substation. The D-S evidence theory is applied to evaluate the status and abnormal analysis of protection equipment, and the fault diagnosis report is automatically generated to improve the level of automatic detection of relay protection equipment. Finally, the effectiveness of the proposed technique is verified by an example test. © 2023 IEEE.

关键词： Life cycle

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Research and Application of Testing Technology for Process Layer Switch in Smart Substation

Research and Application of Testing Technology for Process L...

引用

2023 International Conference on power system Technology, powerCon 2023

ISBN: (纸本)9798350300222

Smart substation is an important part of the new power system. Maintaining the network security of smart substation is of great significance for building a safe and efficient new power system. In recent years, with the extensive application of CSD configuration files in the process layer switches of smart substations makes the process layer network of smart substations more secure, reliable, and robust. However, there is still a lack of targeted testing equipment and methods for the functional characteristics of the switch after download the CSD configuration file. This article analyzes the file structure of CSD configuration files and the main functional characteristics of process layer switch, including configuration mode, forwarding mode, network security management and other aspects. Builded a hardware architecture based on X86CPU, DSP, FPGA multi-core heterogeneity, and proposes a testing method for smart substation process layer switches. The method effectively verifies the functionality of the switch after downloading the CSD configuration file through specific testing projects such as port enablement, static multicast, flow suppression, and frame blocking. The laboratory and field verifications show that this testing method can be applied to practical engineering application environments such as power switch laboratory testing, intelligent substation process layer switch on-site acceptance, and intelligent substation on-site network fault diagnosis. It provides an important evaluation method for the security, transparency, and controllability of the smart substation network environment. © 2023 IEEE.

关键词： Electric substations

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Study on High Impedance Grounding Fault Protection for Personal Safety Guard in Distribution grid 8

Study on High Impedance Grounding Fault Protection for Perso...

引用

8th IEEE International Conference on Advanced power system Automation and Protection, APAP 2019

作者： Liu, Kun Cui, Xin Wang, Bin Dong, Xinzhou Key Lab for Power System Protective Relaying Real Time Digital Simulation of Guangdong Power Grid Dispatching and Controlling Center of Guangdong Power Grid Guangzhou China Tsinghua University Key Lab of Control and Simulation of Power Systems and Generation Equipment Department of Electrical Engineering Beijing China

ISBN: (纸本)9781728117225

In recent years, human electric shock accident caused by line fault of distribution system has happened all over the world. This kind of problem of high resistance grounding fault safety is becoming more and more the attention of the researchers. In this paper, typical arc high resistance grounding fault model is established to simulate the human electric shock accident and the line fell to the ground condition. The transient- state and steady-state fault characteristics of high resistance grounding fault are analyzed in the neutral point grounded through a small resistance grounding system and the resonant grounding system. The above analysis has laid a good foundation for the establishment of an effective fault detection method for high resistance grounding and the realization of human electric shock protection. © 2019 IEEE.

关键词： Fault detection

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Research on Automatic Configuration Technology of Secondary Equipment Configuration Test in Intelligent Substation 10

Research on Automatic Configuration Technology of Secondary ...

引用

10th China International Conference on Electricity Distribution, CICED 2022

ISBN: (数字)9781665452687

ISBN: (纸本)9781665452687

With the development of electric internet of things, substation focuses on building an intelligent system with intelligent information processing and convenient and flexible application. The secondary equipment is updated frequently, and the method of manual test configuration has been difficult to meet the work requirements. This paper presents an automatic configuration method of secondary equipment based on knowledge graph technology. Build the test knowledge graph of secondary equipment, and establish the knowledge association between intelligent electronic device (TED) file and test configuration, test equipment, configuration information point and information path. Based on the word2vec model, the word embedding vector of the secondary equipment test proprietary vocabulary is fused, and then the mapping relationship is deduced based on the information retrieval path and the text similarity of the configuration file. The experimental results show that the method of automatic configuration of secondary equipment test based on knowledge graph is scientific, effective, and has high accuracy, which is suitable for practical engineering application. © 2022 IEEE.

关键词： Equipment testing

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Cause Identification of Single-line-to-ground Fault in Distribution system

Cause Identification of Single-line-to-ground Fault in Distr...

引用

2021 International Conference on power system Technology, powerCON 2021

作者： Liu, Kun Ren, Xuan Wang, Bin Power Dispatch Control Center of Guangdong Power Grid Co. Ltd Key Lab for Protective Relaying Real Time Digital Simulation of Guangdong Power Grid Co. Ltd. Guangzhou China Tsinghua University Key Laboratory of Control and Simulation of Power Systems and Generation Equipment Department of Electric Engineering Beijing China

ISBN: (纸本)9781665407373

Cause identification of single-line-to-ground fault in the distribution system is of great significance to the electric workers for fault isolation and rapid maintenance. The key of fault cause identification is to accurately and quickly distinguish human electric shock faults from non-biological faults. In this paper, human electric shock faults and non-biological faults are modeled and fault characteristics are analyzed. Based on the differences between shape and rotation characteristic of the volt-ampere characteristic curves, a fault cause identification method which can distinguish human electric shock faults from non-biological faults is proposed. simulations show the effectiveness of the method. © 2021 IEEE.

关键词： Electric grounding

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Operation Condition Assessment Method and Its Practical Implementation for Protection systems

Operation Condition Assessment Method and Its Practical Impl...

引用

International Conference on Advanced power system Automation and Protection (APAP)

作者： Kun Liu Yiquan Li Qiaoping Chen Wei Liu Yuxue Wang Shidan Liu Zengchao Wang Feng Wang Ziliang Wu Jianglei Suo Liangrong Yuan Qian Tan Dispatching and Controlling Center of Guangdong Power Grid Guangzhou China Key Lab for Power System Protective Relaying Real Time Digital Simulation of Guangdong Power Grid Guangzhou China

ISBN: (数字)9781728117225

ISBN: (纸本)9781728117232

关键词： real-time systems Substations Reliability protective relaying Information processing power system reliability Monitoring

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