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GB/T 311.14-2024: Insulation co-ordination - Part 14: Insulation co-ordination for AC/DC filters of HVDC system
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Insulation co-ordination - Part 14: Insulation co-ordination for AC/DC filters of HVDC system
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GB/T 311.14-2024
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Basic data | Standard ID | GB/T 311.14-2024 (GB/T311.14-2024) | | Description (Translated English) | Insulation co-ordination - Part 14: Insulation co-ordination for AC/DC filters of HVDC system | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K40 | | Classification of International Standard | 29.080.01 | | Word Count Estimation | 34,340 | | Date of Issue | 2024-03-15 | | Date of Implementation | 2024-10-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 311.14-2024: Insulation co-ordination - Part 14: Insulation co-ordination for AC/DC filters of HVDC system
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 29.080.01
CCSK40
National Standards of People's Republic of China
Insulation coordination - Part 14.High voltage direct current systems
AC/DC filter insulation coordination
Insulation co-ordination-Part 14.Insulation co-ordination for
Released on 2024-03-15
2024-10-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface V
Introduction VI
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Symbols and abbreviations 1
4.1 Symbols 1
4.1.1 Text symbols 1
4.1.2 Graphical symbols 2
4.2 Abbreviations 2
5 Typical configuration scheme of AC/DC filter 2
5.1 Typical configuration scheme of AC/DC filter in HVDC transmission system 2
5.2 Typical Configuration Scheme of AC/DC Filter in Flexible DC Transmission System 4
6 Voltage and overvoltage during operation 4
6.1 Operating voltage of filter at different positions 4
6.2 AC filter overvoltage types and typical equivalent operating conditions 5
6.3 DC filter overvoltage types and typical equivalent operating conditions 5
7 Characteristics and stresses of lightning arresters 6
7.1 Lightning arrester characteristics 6
7.2 Arrester stress 6
7.2.1 AC filter arrester stress 6
7.2.2 DC filter arrester stress 7
7.3 Protection strategy 7
8 Insulation coordination design procedure 8
8.1 Overview 8
8.2 Lightning arrester requirements 9
8.3 Representative overvoltage (Urp) 9
8.4 Coordinated withstand voltage (Ucw) 10
8.5 Required withstand voltage (Urw) 10
8.6 Specified withstand voltage (Uw) 10
9 Research Tools and System Models 10
9.1 Research methods and tools 10
9.2 Typical equivalent working condition modeling method 11
9.2.1 Single-phase ground fault 11
9.2.2 AC bus operation shock 11
9.2.3 Filter Closing 12
9.2.4 Fault recovery after three-phase short circuit 13
9.2.5 No-load operation of converter transformer 13
9.2.6 DC pole ground fault 14
9.2.7 DC polarity switching shock 15
Appendix A (Informative) 2% Statistical CCOV Calculation Example 17
A.1 Example System Conditions 17
A.2 Arrangement of lightning arresters 18
A.3 CCOV calculation 18
Appendix B (Informative) Example of insulation coordination of a 500kV AC filter 19
B.1 Example System Conditions 19
B.2 Arrangement of lightning arresters 20
B.3 Rated parameters of lightning arrester are selected 20
B.4 Calculation of typical equivalent overvoltage conditions 20
B.5 Selection of insulation level at each point of AC filter 21
Appendix C (Informative) Example of insulation coordination of DC filter in a ±800kV DC system 23
C.1 Example System Conditions 23
C.2 Arrangement of lightning arresters 24
C.3 Selection of rated parameters of lightning arresters 24
C.4 Calculation of typical equivalent overvoltage conditions 24
C.5 Selection of insulation level at each point of DC filter 26
Reference 27
Figure 1 Typical AC filter structure diagram 3
Figure 2 Typical DC filter structure diagram 3
Figure 3 Typical operating voltage waveform of each point of AC filter 4
Figure 4 Typical operating voltage waveforms at various points of the DC filter
Figure 5 Schematic diagram of typical equivalent working conditions of single-phase grounding fault 11
Figure 6 Schematic diagram of typical equivalent working conditions of AC busbar operation shock wave12
Figure 7 Schematic diagram of typical equivalent working conditions of AC filter switching 12
Figure 8 Schematic diagram of typical equivalent working condition after three-phase short circuit fault recovery 13
Figure 9 Schematic diagram of typical equivalent operating conditions of converter transformer without load 14
Figure 10 Schematic diagram of typical equivalent working conditions of a pole line grounding fault 15
Figure 11 Schematic diagram of typical equivalent operating conditions of DC polar line operation wave 16
Figure A.1 AC filter arrester configuration 18
Figure B.1 AC filter arrester configuration 20
Figure C.1 DC filter arrester configuration 24
Table 1 Symbols 2
Table 2 Typical equivalent operating conditions and overvoltage types considered in the insulation coordination design of AC filters 5
Table 3 Typical equivalent operating conditions and overvoltage types considered in the insulation coordination design of DC filters 5
Table 4 Typical equivalent working conditions considered by AC filter and the parameters of lightning arrester affected 7
Table 5 Typical equivalent working conditions considered by DC filter and their affected arrester parameters 7
Table 6 AC filter protection arrester summary 8
Table 7 Summary of DC filter protection arresters 8
Table 8 Arrester requirements 9
Table 9 Representative overvoltages and required withstand voltage levels 9
Table 10 Recommended safety factors for insulation coordination design of AC and DC filters 10
Table A.1 AC filter parameter table 17
Table A.2 Main subharmonic current values of AC filter reactor 17
Table A.3 AC filter reactor 2 OV and arithmetic and calculation results 18
Table B.1 AC filter parameter table 19
Table B.2 Main harmonic current values of AC filter reactor 19
Table B.3 Arrester parameters Table 20
Table B.4 AC filter transient setting results 21
Table B.5 AC filter insulation level 21
Table C.1 DC filter parameters 23
Table C.2 Main subharmonic current values of DC filter reactor 23
Table C.3 Arrester parameters Table 24
Table C.4 DC filter transient setting results 25
Table C.5 DC filter insulation level 26
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document is part 14 of GB/T 311 "Insulation Coordination". GB/T 311 has published the following parts.
--- Part 1.Definitions, principles and rules;
--- Part 2.Guidelines for use;
--- Part 3.Insulation coordination procedures for high voltage DC converter stations;
--- Part 4.Calculation guide for network insulation coordination and its simulation;
--- Part 14.Insulation coordination of AC/DC filters for high voltage DC systems.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Electrical Equipment Industry Association.
This document is under the jurisdiction of the National Technical Committee for High Voltage Test Technology and Insulation Coordination Standardization (SAC/TC163).
This document was drafted by. China Southern Power Grid Research Institute Co., Ltd., Xi'an High Voltage Electrical Equipment Research Institute Co., Ltd., China Electric Power
Power Science Research Institute Co., Ltd., State Grid Economic and Technological Research Institute Co., Ltd., China Southern Power Grid Co., Ltd. Ultra-high Voltage Transmission Company,
State Grid Sichuan Electric Power Company Electric Power Research Institute, State Grid Anhui Electric Power Company Electric Power Research Institute, Zhejiang University, Pinggao Group
Co., Ltd., State Grid Hebei Electric Power Co., Ltd. Electric Power Research Institute, State Grid Shanxi Electric Power Co., Ltd. Electric Power Research Institute, State Grid Shandong Electric Power Co., Ltd.
Provincial Electric Power Company Electric Power Research Institute, China Energy Engineering Group Yunnan Electric Power Design Institute Co., Ltd., Suzhou Huadian Electric Co., Ltd.
State Grid Shaanxi Electric Power Company Electric Power Research Institute, State Grid Jiangsu Electric Power Company Electric Power Research Institute, State Grid Liaoning Electric Power Company
Electric Power Research Institute of Yunnan Power Grid Co., Ltd. Electric Power Research Institute of State Grid Zhejiang Electric Power Co., Ltd.
Research Institute, Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Electric Power Research Institute of State Grid Qinghai Electric Power Company, State Grid Ningxia Electric Power
Co., Ltd. Electric Power Science Research Institute, State Grid Xinjiang Electric Power Co., Ltd. Electric Power Science Research Institute.
The main drafters of this document are. Huang Ying, Zhang Xiaoyong, Xin Qingming, Sun Quan, Xu Dizhen, Qiu Wei, He Huiwen, Cui Dong, Wang Ting, Le Bo, Li Qiang,
Wang Lei, Yu Jicheng, Lu Wenhao, Wang Daxing, Chen Zhong, Wang Xin, Wang Xiangke, Pan Jin, Niu Shu, Wang Hui, Xu Xueqin, Jiang Xinghui, Guo Shouxian, Pu Lu,
Wu Jingfeng, Xu Yang, Li Guanhua, Li Jiaqi, Wang Shan, Zhang Jianping, Li Jingliang, Xie Cheng, Lu Qifu, Jiang Ling, Zhou Xiu, Wu Fangjie, Li Shan, Tong Congwei,
Hu Liangrong, Liu Zhiqiang, Wang Jiansheng, Wei Peng.
Introduction
GB/T 311 "Insulation Coordination" aims to establish the principles and guidelines for high-voltage AC and high-voltage DC insulation coordination.
There are obvious differences between AC insulation coordination and DC insulation coordination, and it needs to be divided into two aspects. AC insulation coordination and DC insulation coordination, which are planned to be composed of the following parts.
--- Part 1.Definitions, principles and rules. The purpose is to establish definitions, principles and rules for insulation coordination.
--- Part 2.User Guide. The purpose is to provide user guidance for the correct implementation of Part 1.
--- Part 3.Insulation coordination procedures for high-voltage DC converter stations. The purpose is to provide guidance on insulation coordination for high-voltage DC converter stations.
--- Part 4.Calculation guide for insulation coordination of power grids and its simulation. The purpose is to determine the guidelines for digital calculation of insulation coordination.
--- Part 11.Definitions, principles and rules for insulation coordination of high voltage DC systems. The purpose is to establish the definition, principles and rules for insulation coordination of DC systems.
principles and rules.
--- Part 12.Guidelines for the application of insulation coordination for high-voltage DC converter stations (LCC). The purpose is to provide guidance for the application of insulation coordination for high-voltage DC converter stations (LCC) using LCC as the converter.
Provide guidance for insulation coordination of DC converter stations.
--- Part 13.Guidelines for the application of insulation coordination for high-voltage DC converter stations (VSC). The purpose is to provide guidance for the application of insulation coordination for high-voltage DC converter stations (VSC) using VSC as the converter.
Provide guidance for insulation coordination of DC converter stations.
--- Part 14.Insulation coordination of AC/DC filters in high voltage DC systems. The purpose is to determine the insulation coordination of AC and DC filters in high voltage DC systems.
Insulation coordination of current filters.
--- Part 15.Insulation coordination of DC transmission lines. The purpose is to determine the insulation coordination of DC transmission lines and grounding electrode lines.
This document is part 14 of GB/T 311 "Insulation Coordination". Overvoltage calculation conditions for AC and DC filters, parameters for lightning arresters
The selection procedure for voltage and matching current is different from that for AC and DC systems and their equipment. It is necessary to fully consider the AC and DC filters.
The influence of harmonic superposition characteristics on insulation coordination. With the increasing experience in DC engineering construction and operation in my country, there is an urgent need for AC and DC filtering.
The unified specification of insulation coordination of devices provides a guiding technical document for the construction of DC projects in my country.
Insulation coordination - Part 14.High voltage direct current systems
AC/DC filter insulation coordination
1 Scope
This document gives the insulation coordination procedures and requirements for AC filters (including shunt capacitors) and DC filters for HVDC transmission systems.
Rules, arrester arrangements and stress characteristics etc.
This document is applicable to AC and DC filters in high voltage DC transmission systems.
It provides guidance on voltage and lightning arrester selection and does not involve requirements for personal safety.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 311.1-2012 Insulation coordination Part 1.Definitions, principles and rules
GB/T 25093-2010 AC filters for high voltage DC systems
GB/T 25308-2022 DC filter for high voltage DC transmission system
IEC 60071-11.2022 Insulation coordination definitions, principles and rules for high-voltage DC systems
IEC 60071-12.2022 Insulation coordination application guide for high-voltage DC converter stations (LCC)
3 Terms and definitions
GB/T 311.1-2012, GB/T 25093-2010, GB/T 25308-2022, IEC 60071-11.2022, IEC 60071-12.
For the purposes of this document, the terms and definitions defined in 2022 apply.
4 Symbols and abbreviations
4.1 Notation
4.1.1 Text symbols
The following symbols apply to this document.
Ka. Altitude correction factor.
Kc. coordination factor.
Ks. Safety factor.
n. harmonic order.
Uccov. Peak continuous operating voltage of the arrester.
Ucw. Coordinate withstand voltage.
Uref. Reference voltage of the arrester.
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