ICS 27.100
P 62
Record No. J436—2005
Electric Power Industry Standard of the People's Republic of China
P DL / T 5224 — 2005
Technical Rule for the Design of
HVDC Earth Return Operation System
Issue Date: February 14, 2005 implementation Date: June 1, 2005
Issued by the National Development and Reform Commission of the People's Republic of China
1 Scope
This rule specifies the technical rules for the design of HVDC earth return operation systems and provides the design principles and methods for such systems.
This rule is applicable to the design and test of earthing electrodes on land and (overhead) earthing electrode lines of monopolar and bipolar HVDC power transmission systems.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this rule. For dated references, subsequent amendments (excluding the contents of errata) to, or revision of, any of these publications do not apply. However, parties to agreements based on this rule are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 17949.1 Guide for Measuring Earth Resistivity, Ground Impedance and Earth Surface Potentials of a Ground System—Part 1:Normal Measurements
GB 50021—2001 Code for Investigation of Geotechnical Engineering
DL/T 5092—1999 Technical Code for Designing 110 kV— 500 kV Overhead Transmission Line
DL/T 5159—2002 Technical Code for Geophysical Exploration Electric Power Engineering
SL 237—1999 Test Code of Soil
3 Terms and Definitions
The following terms and definitions apply to this rule.
3.0.1 HVDC earth return operation system
A group of devices specially designed and built as current return circuit with earth or seawater in HVDC power transmission system. It mainly includes earthing electrode line, earthing electrode, current guiding system and auxiliary facilities.
3.0.2 Earthing electrode site
The site where the earthing electrode is located.
3.0.3 Earthing electrode line
The overhead line or buried cable connecting the neutral bus in the converter station and the current guiding system of the earthing electrode.
3.0.4 Earthing electrode
An earthing device that can continuously transfer DC current for the DC system, composed of a number of earthing conductors and active filling material. Land installed earthing electrodes are known as land earthing electrodes and those installed onshore or offshore are known as onshore or offshore earthing electrodes.
3.0.5 Current guiding-system
Devices guiding the current from the earthing electrode line to the feeding rods in the earthing electrode, consisting of current guiding wire, frame, disconnector, feeding cable and connection.
3.0.6 Feeding rod
Earthing conductors embedded in the active fillers of an earthing electrode.
ICS 27.100
P 62
Record No. J435—2005
Electric Power Industry Standard of the People's Republic of China
P DL / T 5223 — 2005
Technical Rule for Designing
HVDC Converter Station
Issue Date: February 14, 2005 implementation Date: June 1, 2005
Issued by the National Development and Reform Commission of the People's Republic of China
1 Scope
This rule specifies the selection of converter station site, performance requirements for DC transmission systems, electrical design of converter stations, selection of main equipment, control and protection design, communication design and auxiliary system design.
This rule is applicable to the design of converter stations in long distance monopolar/bipole HVDC transmission systems, and may provide reference for the design of back-to-back DC converter stations.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this rule. For dated references, subsequent amendments (excluding the contents of errata) to, or revision of, any of these publications do not apply.
However, parties to agreements based on this code are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB 4387 Safety Regulation for Transportation in Plants of Industrial Enterprises
GB 14285 Technical Code for Relaying Protection and Security Automatic Equipment
GB 50009 Load Code for the Design of Building Structures
GB 50010 Code for Design of Concrete Structures
GB 50011 Code for Seismic Design of Buildings
GB 50017 Code for Design of Steel Structures
GB 50019 Code for Design of Heating Ventilation and Air Conditioning
GB 50062 Design Code for Relaying Protection and Automatic Device of Electric Power Installation
GB 50074 Code for Design of Oil Depot
GB 50116 Code for Design of Automatic Fire Alarm System
GB 50217 Code for Design of Cables Electric Work
GB 50229 Code for Fire-Protection Design Power Plant and Substation
GB 50260 Code for Design of Seismic of Electrical Installations
GBJ 16 Code of Design on Building Fire Protection and Prevention
DL/T 605 Guide for Insulation Coordination of HVDC Convertor Stations
DL/T 620 Overvoltage Protection and Insulation Coordination
for AC Electrical Installations
DL/T 621 Grounding for AC Electrical Installations
DL/T 5044 Technical Code for Designing DC System of Power Projects
DL/T 5056 Technical Code of General Plan Design for Substation
DL/T 5136—2001 Technical Code for Designing of Electrical Secondary Wiring in Fossil Fuel Power Plants and Substations
DL/T 5137 Technical Code for Designing Electrical Measuring and Energy Metering Device
DL/T 5149 Technical Code for Designing Computerized Monitoring and Control System of 220 kV-500 kV Substations
DL/T 5155 Technical Code for Designing AC Station Service of 220 kV-500 kV Substation
DL/T 5218 Technical Code for Designing 220 kV-500 kV Substation
DL/T 5225 Technical Rule of Communication Design for 220 kV-500 kV Substation
SDJ 5 Technical Code for Designing High Voltage Electrical Switchgear
SDGJ 14 Design Technical Rule for Selecting Conductor and Electrical Equipment
IEC 60071—2 Insulation Co-ordination - Part 2: Application Guide
IEC 60099—4 Surge Arresters - Part 4: Metal-Oxide Surge Arresters Without Gaps for AC Systems
IEC 60633: 1998 Terminology for High-Voltage Direct Current (HVDC) Transmission
IEC 61803: 1999 Determination of Power Losses in HighVoltage Direct Current (HVDC) Converter Stations CIGRE 3314 Application Guide for Metal Oxide Surge Arresters without Gaps in HVDC Converter Stations (WG05 report) Decree No. 30 issued by the State Economic and Trade Commission Regulations for Safety Protection of Computerized Monitoring and Control System and Dispatching Data Network in Power Grids and Power Plants
3 Terms and Definitions
The following terms and definitions apply to this rule.
3.1 High Voltage Direct Current (HVDC) System and Converter Station
3.1.1
HVDC system
Electrical power system which transfers energy in the form of high voltage direct current between two or more AC buses.
3.1.2
Two-terminal HVDC transmission system
HVDC transmission system consisting of two converter stations and the connecting HVDC transmission lines (see Figure 3.1.2).
3.1.3
Back-to-back DC coupling system
A type of electric power facility which connects two
asynchronous AC power systems through AC-DC-AC conversion without DC transmission lines, also called Asynchronous Interconnection Station. If the connected two AC power systems have different rated frequencies, the facility is also called frequency conversion station. In a back-to-back coupling system, two sets of converter equipment for rectifier and inverter are installed in one station, their DC sides are connected each other via smoothing reactor(s), and their AC sides are connected to different AC systems separately, thus the asynchronous interconnection and power exchange between two asynchronous AC power systems are realized.
3.1.4
HVDC system pole (pole)
Part of an HVDC system consisting of all the equipment in both converter stations of a two-terminal HVDC transmission system and the interconnecting transmission lines, if any, which during normal operation exhibit a common direct voltage polarity with respect to earth (see Figure 3.1.2).
3.1.5
Monopolar (unipolar) HVDC system
HVDC system with only one pole.
ICS27.100
P62
Record No.J429—2005
Electric Power Industry Standard of the People's Republic of China
DL/T5217-2005
Technical Code for Design of
220 kV-500 kV Compact Overhead
Transmission Line
Issue Date:February 14,2005
Implementation Date:June 1,2005
Issued by the National Development and Reform Commission of the People's Republic of China
1 Scope
1.0.1 This code specifies the main design and technical requirements for 220 kV-500 kV AC compact overhead transmission lines.
1.0.2 This code is applicable to the design of 220 kV-500 kV compact overhead transmission lines (hereinafter referred to as compact lines).
1.0.3 This code is not applicable to the design of compact lines in heavy icing areas and those with a large span.
2 Normative References
The following normative documents contain provisions which,through reference in this text,constitute the provisions of this code.For dated references,subsequent amendments(excluding the contents of errata) to,or revision of,any of these publications do not apply.However,parties to agreements based on this code are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below.For undated references,the latest edition of the normative document referred to applies.
DL/T 5092-1999 Technical Code for Designing 110 kV-500 kV Overhead Transmission Line
DL/T 5154-2002 Technical Regulation of Design for Tower and Pole Structures of Overhead Transmission Line
3 General
3.0.1 The construction of compact line shall be demonstrated in terms of the necessity,economic benefits and social benefits from the perspective of increase of the transmission capacity of power grids and save of line corridors.
3.0.2 The design of compact lines must be in compliance with the national basic construction strategy and economic policies and be safe,reliable,economic and reasonable.
3.0.3 This code is based on DL/T 5092-1999 and makes supplementary provisions on the technical design of compact lines.
For the basic rules governing loads,materials,structural design,structure and foundation of towers,refer to DL/T 5092-1999.
3.0.4 In addition to the requirements stipulated in this code,relevant provisions specified in the current national standards and electric power industry standards shall also be complied with in the design of compact lines.
ICS 27.100
P 60
Record No. J181—2002
Electric Power Industry Standard of the People's Republic of China
P DL / T 5159 — 2002
Technical Code for Geophysical
Exploration Electric
Power Engineering
Transmission Lines
Issue Date: April 27, 2002 implementation Date: September 1, 2002
Issued by the State Economic and Trade Commission of the People's Republic of China
1 Scope
This code specifies the technical methods, requirements,measurements, data analysis and interpretation methods for engineering geophysical exploration, and is applicable to newly built or expanded fossil fuel power plants, nuclear power plants,substations, overhead transmission lines, and planning of electric power systems. This code may be taken as a reference for other types of geophysical exploration activities.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute the provisions of this code.
For dated references, subsequent amendments (excluding the contents of errata) to, or revision of, any of these publications do not apply.
However, parties to agreements based on this code are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative documents apply.
GB/T 50269—1997 Code for Measurement Method of Dynamic Properties of Subsoil
DL 5001—1991 Technical Code for Engineering Survey of Fossil Fuel Power Plants
DL 5010—1992 Code for Engineering Geophysical Exploration Hydropower and Water Resources
DL/T 5156.5—2002 Electric Power Engineering Surveying Drawings Part 5: Geophysical Prospecting
CJJ 61—1994 Technical Specification for Detecting and Surveying of Underground Pipelines and Cables in City
JGJ/T 93—1995 Specification for Low Strain Dynamic Testing of Piles
JGJ 106—1997 Specification for High Strain Dynamic Testing of Piles
JGJ 944—1994 Technical Code for Building Pile Foundation
3 General Provisions
3.0.1 The geophysical exploration used in hydrogeological and geotechnical investigation for electric power construction purposes is collectively called electric power engineering geophysical exploration (hereinafter referred to as geophysical exploration). Nowadays commonly used methods include electrical method, seismic method, well logging method, rock-soil in-situ test, non destructive testing of piles, underground pipelines and cables detection technology, radon detection technology, sonic test technology, and Rayleigh wave test technology.
3.0.2 Geophysical exploration is an important means of geological exploration, ground treatment, and quality examination. Its proper use in conjunction with electric power surveying and design characteristics may help improve the surveying quality, shorten the time, and reduce the cost.
3.0.3 Geophysical exploration must be carried out in close conjunction with geological survey. Attention is drawn to tests and determination of various physical parameters of rock and soil, which shall be utilized in an extensive manner to overcome the limitations of a single method in conditional use and multiple interpretations, and obtain correct conclusions.
3.0.4 New geophysical exploration technologies shall be actively used and promoted. Attention is to be given to the verification of geophysical exploration results and the return visit for geologic effects.
3.0.5 In electric power engineering, the geophysical exploration work processes are generally as follows: acceptance of task; data collection; reconnaissance survey; plan preparation; method testing;field work; data organization; submission of results. The above processes may be streamlined under special circumstances.
ICS 27.100
P 60
Record No. J180—2002
Electric Power Industry Standard of the People’s Republic of China
P DL / T 5158 — 2002
Technical Code of Meteorological
Surveying for Electrical
Power Projects
Issue Date: April 27, 2002 implementation Date: September 1, 2002
Issued by State Economic and Trade Commission of the People’s Republic of China
1 Scope
This code specifies the contents and technical principles of meteorological surveying for electrical power projects and is applicable to the meteorological surveying for large-scale power generation, transmission and transformation projects that are newly built, expanded and modified as well as the electric power projects of microwave and optical fiber-based communication. Also, it can be used as a reference for meteorological surveying for other electric power projects than those described above.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this code. When this code is published, the standards of the indicated editions are all effective and in force. However, all the standards may be revised. The parties that use this code are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
GB 50009—2001 Load Code for the Design of Building Structures
JTJ 213—1998 Code of Hydrology for Sea Harbor
Code for Surface Meteorological Observation, prepared by
China Meteorological Administration in 1979
3 General
3.0.1 The analysis and calculation of metrological conditions must place emphasis on the fundamental data which shall be reviewed in terms of typicality, reliability and consistency.
3.0.2 When calculating the design wind velocity and ice coating thickness of a region where sufficient data is not available, multiple calculation methods shall be employed as practical as possible. The calculation results derived from these methods shall be analyzed comprehensively so as to select reasonable results.
3.0.3 Where the project site is far away from the local meteorological station and the terrain conditions there vary greatly, short-term meteorological observation station, wind measuring station, icing observation station shall be established based on the design requirements so as to obtain the necessary actual data.
3.0.4 Where special meteorological data is needed for air cooling system of thermal power plants and wind farms and cannot be made available from the local meteorological station, special metrological station shall be established at the project site to continuously observe wind velocity, wind direction and ambient temperature.
3.0.5 For electric power projects under construction or those have been completed and put into operation, if catastrophic accidents including unusual strong wind and ice coating of conductors occur,the relevant personnel shall, together with the design personnel of the projects, promptly visit the site for metrological survey, further analyzing and demonstrating the metrological conditions of design and proposing the corresponding engineering measures.
3.0.6 The metrological surveying for electrical power projects shall be carried out based on the experiences gained on an ongoing basis,through aggressive and prudent use of the domestic and foreign proven and state-of-art theories, methods and technologies.
ICS 27.100
P 62
Record No. J150—2002
Electric Power Industry Standard of the People’s Republic of China
P DL / T 5147 — 2001
Designing Technical Rules for
Security and Automaticity
Equipment of Power System
Issue Date: December 26, 2001 implementation Date: May 1, 2002
Issued by the State Economic and Trade Commission of the People’s Republic of China
1 Scope
These rules stipulate the principled requirements on calculation and analysis of security and stability of power system, design and configuration of security and automaticity equipment during the design of power system and are applicable to the design of security and automaticity equipment of power system, the design of security and automaticity equipment necessary for connecting power plants and substations to power system as well as the study on configuration schemes of security and automaticity equipment.
2 Normative References
The following normative references contain provisions which,through reference in this text, constitute provisions of these rules for dated references, subsequent amendments to (excluding error corrections), or revisions of, any of these publications do not apply.
When these rules are published, the revisions shown herein are in force. However, parties entered into agreements based on this code are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest editions thereof shall apply.
GB 14285—1993 Technical Code for Relaying Protection and Security Automatic Devices
DL/T 559—1994 Code for Operation Settings of Relay Protection Equipment in 220-500 kV Power Grids
DL 428—1991 Technical Rules for Automatic Low Frequency Load Shedding of Power System
DL755—2001 Guide on Security and Stability for Power System
SD 131—1984 Technical Guidelines for Power System (trial)
3 General
3.0.1 The design of security and automaticity equipment of power system shall comply with the requirements of DL 755—2001 Guide on Security and Stability for Power System. The security and automaticity equipment of power system can be classified into the following categories by their functional applications: equipment to automatically prevent loss of stability, equipment to automatically eliminate asynchronous operation, equipment to eliminate frequency or voltage deviations that may lead to accident evolvement or damages to equipment, and equipment to restore normal operation of power system.
The security and stability control system of power system is mainly intended to prevent loss of stability of power system and avoid the system accidents of power system, such as large-scale blackouts.
3.0.2 The security and automaticity equipment of power system should preferably employ simple, reliable, proven and effective equipment that are deployed in a distributed manner. Various equipment intended for different controlled objects shall be able to work collaboratively.
3.0.3 The hardware of power system stability control equipment shall be universal to a certain degree, while its software shall be modularized to allow for the system evolvement.
ICS 27.100
P 62
Record No. J144—2002
Electric Power Industry Professional Standard of the People’s Republic of China
P DL / T 5138 — 2001
To replace SDGJ 82 — 1988
Technical Specifications for Aerial
Photographing and Surveying of
Overhead Transmission Line
Design of Fossil Fuel Power Plant
Design of Fossil Fuel Power Plant
Issue Date: December 26, 2001 implementation Date: May 1, 2002
Issued by the National Development and Reform Commission of the People’s Republic of China
1 Scope
This standard is established to specify the principles, precision indicators, job methods and technical requirements when using aerial survey line selection technology, aerial survey digital survey technology and Global Positioning System (GPS) to survey overhead transmission lines.
This standard applies to the aerial aerotriangulation work during survey and engineering stage of newly-built overhead transmission line projects at 110 kV and above.
2 Normative References
The following normative references contain provisions which,through reference in this text, constitute provisions of this standard for dated references, subsequent amendments to (excluding error corrections), or revisions of, any of these publications do not apply.
When this standard is published, all editions mentioned are valid.
However, parties entered into agreements based on this code are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest editions thereof shall apply.
GB 6962—86 Specifications for Analytical Aerotriangulation of 1:500, 1:1000 and 1:2000 Topographical Map
GB 7930—87 Specifications for Office Work of Analytical Aerotriangulation of 1:500, 1:1000 and 1:2000 Topographical Map
GB 7931—87 Specifications for Field Work of Analytical Aerotriangulation of 1: 500, 1:1000 and 1:2000 Topographical Map
GB 50167—92 Specifications for Engineering Photographing and Surveying
DL 5001—91 Technical Code for Engineering Surveying of Fossil Fuel Power Plants
DL/T 5049 — 95 Technical Regulation of Survey for Large-Span Overhead Transmission lines
DL/T 5122—2000 Technical Code for Designing 500 kV Overhead Transmission Lines
CH 2001—92 Specifications for Global Positioning System(GPS) Survey
3 General
3.0.1 This standard is established to meet the needs for development of analytical aerotriangulation technology for overhead transmission lines (abbreviated as line aerial survey), unify the technical standards,maintain technically advanced, provide accurate survey materials for construction of overhead transmission line projects and meet the requirements for designing transmission lines so as to optimize the lines route and reduce construction costs.
3.0.2 In order to keep pace with the design stage, the survey stage for overhead transmission line projects shall be divided into the survey in the preliminary design stage (abbreviated as preliminary survey) and the survey in the construction drawings design stage(abbreviated as final survey).
3.0.3 The surveying instruments and tools for both office and field work of aerial survey must be timely inspected and calibrated,periodically repaired as well as maintained and serviced carefully.
3.0.4 The original records of handbooks (including electronic handbooks) for office and field work shall be authentic, legible and complete. Any erasing, obliteration, transcription and supplement afterwards is strictly prohibited.
3.0.5 In addition to this standard, the aerial survey of lines shall conform to the applicable provisions of GB 50167, DL 5001 and CH2001 as well.