GB/T 22390.5-2026 Control and protection equipment of high-voltage direct current (HVDC) transmission system—Part 5: DC line fault location device English, Anglais, Englisch, Inglés, えいご
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ICS 13.220.10
CCS H 57
National Standard of the People's Republic of China
GB/T 22390.5-2026
Replaces GB/T 22390.5-2008
Control and protection equipment of high-voltage direct current (HVDC) transmission system - Part 5: DC line fault location device
高压直流输电系统控制与保护设备 第5部分：直流线路故障定位装置
Issue date: 2026-01-28 Implementation date: 2027-02-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
Introduction
1 Scope
2 Normative References
3 Terms and Definitions
4 Technical Requirements
5 Test Methods
6 Inspection Rules
7 Marking, Labels, and Instruction Manual
8 Packaging, Transport, and Storage
9 Completeness of Supply
10 Quality Assurance
Control and Protection Equipment for High-Voltage Direct Current (HVDC) Transmission Systems — Part 5: DC Line Fault Locator
1 Scope
This document specifies the technical requirements, test methods, inspection rules, packaging, transport, storage, marking, labels, instruction manual, completeness of supply, and quality assurance for DC line fault locators used in HVDC transmission systems.
This document is applicable to DC line fault locators (hereinafter referred to as "equipment") installed at the station ends of HVDC transmission systems with voltage levels of ±500 kV and below.
2 Normative References
The following documents contain provisions which, through normative reference in this text, constitute essential provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 2887-2011 General Specification for Computer Field
GB/T 2900.49 Electrotechnical Terminology — Power System Protection
GB/T 4208-2017 Degrees of Protection Provided by Enclosures (IP Code)
GB/T 7261-2016 Basic Test Methods for Relaying Protection and Security Automatic Equipment
GB/T 9361-2011 Safety Requirements for Computer Field
GB/T 9969 General Principles for Preparation of Instructions for Use of Industrial Products
GB/T 11287-2000 Electrical Relays — Part 21: Vibration, Shock, Bump and Seismic Tests on Measuring Relays and Protection Equipment — Section One: Vibration Tests (Sinusoidal)
GB/T 13498 Terminology for High-Voltage Direct Current (HVDC) Transmission
GB/T 14537-1993 Shock and Bump Tests on Measuring Relays and Protection Equipment
GB/T 14598.24 Measuring Relays and Protection Equipment — Part 24: Common Format for Transient Data Exchange (COMTRADE) for Power Systems
GB/T 14598.26-2025 Measuring Relays and Protection Equipment — Part 26: Electromagnetic Compatibility Requirements
GB/T 14598.27-2025 Measuring Relays and Protection Equipment — Part 27: Product Safety Requirements
GB/T 17626.9-2011 Electromagnetic Compatibility (EMC) — Testing and Measurement Techniques — Pulse Magnetic Field Immunity Test
GB/T 17626.10-2017 Electromagnetic Compatibility (EMC) — Testing and Measurement Techniques — Damped Oscillatory Magnetic Field Immunity Test
GB/T 32890 IEC 61850 Engineering Application Model for Protection Relays
DL/T 357-2019 Technical Specification for Transmission Line Travelling Wave Fault Location Equipment
NB/T 10448-2020 Testing Specification for Transmission Line Travelling Wave Fault Location Equipment
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 2900.49 and GB/T 13498, and the following apply.
3.1
time synchronization system
A system that uses a standard time source to provide a unified time synchronization signal to the DC line fault locator.
3.2
fault location
A technique for determining the location of a fault on a transmission line using electrical quantities during the fault. NOTE: Also known as "fault distance measurement".
3.3
fault location error
The deviation between the fault point measured by the fault locator and the actual fault point.
4 Technical Requirements
4.1 Environmental Conditions
4.1.1 Normal Service Atmospheric Conditions
The normal service atmospheric conditions are as follows:
a) Ambient temperature: -10°C to +55°C;
b) Atmospheric pressure: 80 kPa to 110 kPa;
c) Relative humidity: 5% to 95%.
4.1.2 Standard Test Atmospheric Conditions
The standard test atmospheric conditions are as follows:
a) Ambient temperature: +15°C to +35°C;
b) Atmospheric pressure: 86 kPa to 106 kPa;
c) Relative humidity: 45% to 75%.
4.1.3 Standard Test Atmospheric Conditions for Arbitration Tests
The standard test atmospheric conditions for arbitration tests are as follows:
a) Ambient temperature: +20°C ± 2°C;
b) Atmospheric pressure: 86 kPa to 106 kPa;
c) Relative humidity: 45% to 75%.
4.1.4 Other Requirements for the Service Environment
4.1.4.1 The service environment shall not have vibration and shock exceeding the limits specified in this document.
4.1.4.2 The service environment shall be free from gases and conductive media that cause corrosion or damage to insulation. For environments with fire or explosion hazards, the equipment shall have explosion-proof measures.
4.1.4.3 The service environment for indoor equipment shall have facilities for protection against rain, snow, wind, and sand.
4.1.4.4 Site safety requirements shall comply with Class B provisions of GB/T 9361-2011, and grounding resistance shall comply with Clause 5.8 of GB/T 2887-2011.
4.1.5 Extreme Range Limits of Environmental Temperature
The extreme temperature limits for the equipment are -25°C and +70°C. Under transport, storage, and installation conditions, the equipment without applied excitation shall withstand temperatures within this range without undergoing irreversible damage.
4.1.6 Special Environmental Conditions
When environmental conditions exceed those specified in 4.1.1 to 4.1.5, they shall be subject to agreement between the manufacturer and the user.
4.2 Power Supply
4.2.1 AC Power Supply
Requirements for AC power supply are as follows:
a) Rated voltage: 220 V, with allowable deviation -20% to +15%;
