GB/T 42001-2022 in English

VALID

Altitude correction method for external insulation flashover voltage of high voltage power transmission projects

Issued on:2022-10-12
Implemented on:2023-05-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $220.00
$214.00

Standard No:	GB/T 42001-2022
Document status:	VALID
Title in English:	Altitude correction method for external insulation flashover voltage of high voltage power transmission projects
Title in Chinese:	高压输变电工程外绝缘放电电压海拔校正方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2022-10-12
Implemented on:	2023-05-01
ICS Classification:	29.080.01-Electrical insulation in general
Chinese Classification:	F21-Electric power system
Professional Classification:	GB-National Standard
Related Keywords:	external insulation voltage altitude correction external insulation flashover voltage high voltage power transmission projects introduction standard system altitude correction method external insulation
Related Topics:	substation altitude Power transmission Correction discharge discharge voltage discharge voltage Voltage in English Correction of the equation factor correction discharge + voltage extrinsic parameter correction voltage discharge Correction method Absolute Calibration Curve UV current correction method power transmission Discharge voltage version Positive high voltage power supply calibration standard High Voltage Insulated Circuit UV current correction High voltage electrician Power transmission and transformation project GBT42001 GB/T 42001-2022 Voltage Insulation altitude High altitude creepage distance correction Electronic appliance altitude High voltage transmission and distribution line insulation resistance Transformer insulation resistance test method High voltage discharge time Power input and output insulation Transformer insulation resistance conversion method High altitude external insulation configuration technology Transformer winding insulation resistance test method Calibration of altimeter gb/t 42001 gb/t 42001-2022 High Altitude Insulation Technology gb 42001 gb42001 High Altitude Voltage Correction

《GB/T 42001-2022高压输变电工程外绝缘放电电压海拔校正方法》由524（中国电力企业联合会）归口，主管部门为中国电力企业联合会。

Introduction

Standard system for external insulation voltage altitude correction

This standard constructs a standard system for external insulation environmental adaptation of 110kV~750kV and ±800kV transmission and transformation projects, and innovatively proposes a dynamic correction model for switching impulse voltage...

Comparison of key technical parameters

Equipment type	Correction factor formula	Voltage range(kV)	Altitude influence coefficient
AC line tower	Ka=1/(1-0.0001H)	500-1800	1.0~2.0
DC Converter Station	Ka=1/(1-0.00012H)	1700-2400	1.23~1.58

Suggestions for Implementation of the Standard

Criteria for Selecting Calibration Procedures

In areas with an altitude of 2000m+, it is recommended to adopt the phase-phase comprehensive correction mode:

...

Suggestions for the Application of New Technologies

In the Qinghai-Tibet Power Grid Reconstruction Project, by introducing the correction coefficient of this standard...

Technology Evolution and Innovation

Version Comparison	Old Standard Parameters	GB/T42001-2022 Improvement
Discharge Voltage Fluctuation Coefficient	±15%	±7%

More samples: NB/T 47013.2-2015 JGJ 94-2008 JJG 21-2008

Sample only — not a preview of GB/T 42001-2022

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