GBJ 64-1983 Design specification for overvoltage protection of industrial and civil power equipment

This specification is applicable to the overvoltage protection design of power installations of 35 kV and below in various industries such as industry, transportation, electricity, post and telecommunications, finance and trade, culture and education. GBJ 64-1983 Overvoltage Protection Design Specification for Industrial and Civilian Power Installations GBJ64-1983 Standard Download Decompression Password: www.bzxz.net

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National Standard of the People's Republic of China
Design Specification for Overvoltage Protection of Industrial and Civil Power Equipment
GBJ64-83
1984 Beijing
Engineering Construction Standard Full-text Information System
W Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Design Specification for Overvoltage Protection of Industrial and Civil Power Equipment
GBJ64—83
(Trial)
Editor: Ministry of Water Resources and Electric Power of the People's Republic of China Approval: State Planning Commission Trial date: June 1, 1984
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Notice on Issuing Fourteen Design Standards, including "Design Standards for Industrial and Civilian Power Supply Systems" and "Design Standards for Industrial and Civilian 35kV Substations" | Planning Commission [1983] No. 1659
According to the requirements of the former State Construction Commission (71) Jian Ge Han Zi No. 150 Notice, fourteen design standards, including "Design Standards for Industrial and Civilian Power Supply Systems" and "Design Standards for Industrial and Civilian 35kV Substations", jointly compiled by the Ministry of Water Resources and Electric Power, the Ministry of Machinery Industry and relevant units, have been reviewed by relevant departments. These fourteen design standards are now approved as national standards and will be implemented on a trial basis from June 1, 1984. The names, numbers and management units of the fourteen specifications are as follows: 1. "Design Specifications for Industrial and Civil Power Supply Systems" GBJ52-83 is managed by the Ministry of Machinery Industry, and its specific interpretation and other work is the responsibility of the Second Design Institute of the Ministry of Machinery Industry.
2. "Design Specifications for Industrial and Civil 10kV and Below Substations" GBJ53-83 is managed by the Ministry of Machinery Industry, and its specific interpretation and other work is the responsibility of the Eighth Design Institute of the Ministry of Machinery Industry.
3. "Design Specifications for Low-voltage Distribution Devices and Lines" GBJ54-83 is managed by the Ministry of Machinery Industry, and its specific interpretation and other work is the responsibility of the Eighth Design Institute of the Ministry of Machinery Industry.
4. "Design Specifications for Power Installations for Industrial and Civil General Equipment" GBJ55-83 is managed by the Ministry of Machinery Industry, and its specific interpretation and other work is the responsibility of the Seventh Design Institute of the Ministry of Machinery Industry.
5. "Design Code for Electric Heating Equipment and Power Installation" GBJ56-83 is managed by the Ministry of Machinery Industry, and its specific interpretation and other work is the responsibility of the Design and Research Institute of the Ministry of Machinery Industry.
6. "Design Code for Building Lightning Protection" GBJ57-83 is managed by the Ministry of Machinery Industry, and its specific interpretation and other work is the responsibility of the Design and Research Institute of the Ministry of Machinery Industry. 7. "Design Code for Electric Installation in Explosion and Fire Hazardous Places" GBJ58-83 is managed by the Ministry of Chemical Industry, and its specific interpretation and other work is the responsibility of the Chemical Design Company of the Ministry of Chemical Industry. 8. "Design Code for Industrial and Civil 35kV Substation" GBJ59-83 is managed by the Ministry of Water Resources and Electric Power, and its specific interpretation and other work is the responsibility of the East China Electric Power Design Institute of the Ministry of Water Resources and Electric Power.
IX. "Design Specifications for Industrial and Civil 35kV High Voltage Distribution Devices" GBJ60-83 is managed by the Ministry of Water Resources and Electric Power, and its specific interpretation and other work is the responsibility of the Northwest Electric Power Design Institute of the Ministry of Water Resources and Electric Power.
X. "Design Specifications for Industrial and Civil 35kV and Below Overhead Power Lines" GBJ61-83 is managed by the Ministry of Water Resources and Electric Power, and its specific interpretation and other work is the responsibility of the Beijing Power Supply Bureau of the Ministry of Water Resources and Electric Power.
XI. "Design Specifications for Relay Protection and Automatic Devices for Industrial and Civil Power Installations" GBJ62-83 is managed by the Ministry of Water Resources and Electric Power, and its specific interpretation and other work is the responsibility of the Northeast Electric Power Design Institute of the Ministry of Water Resources and Electric Power. XIII. "Design Specifications for Electrical Measuring Instruments for Industrial and Civil Power Installations" GBJ63-83 is managed by the Ministry of Water Resources and Electric Power, and its specific interpretation and other work is the responsibility of the Southwest Electric Power Design Institute of the Ministry of Water Resources and Electric Power.
Thirteen, "Overvoltage Protection Design Specification for Industrial and Civil Power Installations" GBJ64-83 is managed by the Ministry of Water Resources and Electric Power, and its specific interpretation and other work is the responsibility of the High Voltage Research Institute of the Electric Power Research Institute of the Ministry of Water Resources and Electric Power. Fourteen, "Grounding Design Specification for Industrial and Civil Power Installations" GBJ65-83
is managed by the Ministry of Water Resources and Electric Power, and its specific interpretation and other work is the responsibility of the High Voltage Research Institute of the Electric Power Research Institute of the Ministry of Water Resources and Electric Power.
State Planning Commission
November 7, 1983
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Preparation Instructions
This specification is compiled by the former Ministry of Water Resources and Electric Power Planning and Design Administration and relevant units in accordance with the Notice No. 150 of the former National Capital Construction Commission (71) Jian Ge Han Zi. During the preparation process, we conducted extensive investigations and studies, summarized the experience of overvoltage protection design and production and operation since the founding of the People's Republic of China, widely solicited opinions from relevant units across the country, and finalized the draft after review and revision in conjunction with relevant departments. The main contents of this specification include: general principles, lightning rods and lightning conductors, overvoltage protection devices, protection of overhead lines, protection of substations (distribution stations), protection of overhead distribution networks, protection of rotating motors, and protection of other equipment. In view of the fact that this specification is compiled for the first time, some contents need to be supplemented and improved in future work practice. During the trial implementation of this specification, if it is found that it needs to be modified or supplemented, please send your opinions and materials directly to the High Voltage Institute of the Electric Power Research Institute of the Ministry of Water Resources and Electric Power and copy them to the Electric Power Planning and Design Institute of our ministry for reference in future revisions. Ministry of Water Resources and Electric Power
October 1983
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Chapter 1
Chapter 2
Chapter 3
Lightning Rods and Lightning Conductors··
Overvoltage Protection Devices
Section 1
Section 2
Section 3
Section 4
Chapter 4
Valve Type Lightning Arrester
Tube Type Lightning Arrester…
Protective Gap
Arc Extinguishment Coil
Protective Equipment for Overhead Lines Protection
Section 1
Section 2
Section 3
Chapter 5
Protection of general lines:
Protection of line crossings
Protection of low-voltage overhead lines
Protection of substations (distribution stations)
Section 1
Section 2
Section 3
Direct lightning overvoltage protection:
Lightning intrusion wave overvoltage protectionwww.bzxz.net
Simple protection of small-capacity substations
Protection of overhead distribution networks
Chapter 6
Section 1
Protection of distribution transformers
Section 2 Protection of switchgear, etc..
Protection of rotating electrical machines
Chapter VII
Chapter VIII
Appendix 1
Protection of other equipment
Glossary
Explanation of terms used in this specification
Appendix 2
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
Main symbols
R——power frequency grounding resistance;
R——impact grounding resistance;
——lightning current wave head length;||tt| |D——the distance between two lightning rods and lightning conductors; DE
——the distance between a lightning rod and an equivalent lightning rod; -the height of the arc passing through the apex of two equal-height lightning rods and the lowest point of the upper edge of the protection range;
h——the height of the lightning rod and lightning conductor, the height of the lightning rod checkpoint, and the height of the lightning conductor used to protect the substation;
——the effective height of the lightning rod and lightning conductor; -the height of the protected object;
ho——the lowest point height of the upper edge of the protection range between two equal-height lightning rods and lightning conductors or the height of the imaginary lightning rod between two equal-height lightning rods, 1——the span length,
l.——The length of the incoming line protection section;
—The distance between the lightning strike point checked on the lightning conductor and the grounding pillar or the nearest pillar,
12—The distance between the lightning strike point checked on the lightning conductor and the pillar at the other end,be
—The minimum width of the protection range on one side between the two needles on the hx horizontal plane;The radius of the circle passing through the vertices of the two lightning rods (lightning conductors) and the lowest point of the upper edge of the protection range between the two needles (lines);The protection radius of the lightning rod on the ground;
The protection radius of the lightning rod on the hx horizontal planeS—The air distance between the lightning rod, lightning conductor and the protected object;S.—The ground distance between the lightning rod, lightning conductor and the protected object;?—The height influence coefficient of the lightning rod and lightning conductor;β—The shunt coefficient of the lightning conductor.
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter I General Provisions
Article 1.0.1 The design of overvoltage protection for power installations must conscientiously implement the national technical and economic policies, and should ensure: personal safety, reliable power supply, advanced technology and economic rationality.
Article 1.0.2 The design of overvoltage protection for power installations should reasonably determine the design scheme based on the project characteristics, scale and development plan, lightning activity, etc. In areas with particularly strong lightning activity, lightning protection measures should also be appropriately strengthened based on local practical experience.
Article 1.0.3 This specification applies to the overvoltage protection design of power installations of 35 kV and below in various industries such as industry, transportation, electricity, post and telecommunications, finance and trade, culture and education. Article 1.0.4 The design of overvoltage protection for power installations should also comply with the provisions of the current relevant national standards and specifications.
Chapter 2 Lightning Rods and Lightning Conductors
The protection range of a single lightning rod shall be determined in accordance with the following method Article 2.0.1
(Figure 2.0.1):
1. The protection radius of the lightning rod on the ground shall be calculated according to the following formula: r=1.5h
wherein r is the protection radius (meters);
h is the height of the lightning rod (meters).
(2.0.1—1)
2. The protection radius on the horizontal plane at the height of the protected object shall be determined according to the following formula:
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Engineering Construction Standard Full-text Information System
h, the cross-section of the protection model on the horizontal plane
Figure 2.0.1 Protection range of a single lightning rod
product,
T =(h —ha)p =hap
(2.0.1—2)
wherein x is the protection radius of the lightning rod on the hx horizontal plane (m); hr is the height of the protected object (m);
ha is the effective height of the lightning rod (m); P is the height influence coefficient, h<30m, P=1; 30
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