GB/T 34865-2017 in English

VALID

Capacitors for high voltage direct current transfer switches

Issued on:2017-11-01
Implemented on:2018-05-01
File Format:PDF
Delivery:Via email within 5 business days

Price(USD)： $370.00
$359.00

Standard No:	GB/T 34865-2017
Document status:	VALID
Title in English:	Capacitors for high voltage direct current transfer switches
Title in Chinese:	高压直流转换开关用电容器
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 5 business days
Issued on:	2017-11-01
Implemented on:	2018-05-01
ICS Classification:	31.060.70-Power capacitors
Professional Classification:	GB-National Standard
Related Keywords:	direct current transfer switches introduction in-depth interpretation high reliability requirements high voltage high temperature environment high temperature
Related Topics:	HVDC Switching Standards high frequency switching transformer iec Capacitor discharge test battery DC voltage Efficient conversion of electrical energy Electrode converter HVDC switch High voltage and high frequency current sample changer Switching DC power supply DC DC switching power supply GBT34865 GB/T 34865-2017 DC switch IEC wb transfer film voltage Current to voltage isolator polarization switching voltage AC withstand voltage and DC withstand voltage conversion Film transfer 100v current High voltage switching power supply High voltage DC relay High voltage capacitors follow High voltage electrical related Voltmeter transfer switch national standard number Medium voltage transfer switch electrical appliances Medium voltage transfer switch electrical standards Current-to-pressure converter calibration Current to pressure conversion calibration DC high speed parallel switch

《GB/T 34865-2017高压直流转换开关用电容器》由TC333（全国高压直流输电设备标准化技术委员会）归口，主管部门为中国电器工业协会。

Introduction

In-depth interpretation of the national standard GB/T 34865—2017 for capacitors for high-voltage DC conversion switches

Standard dimensions	Technical requirements	Scope of application	Comparative analysis
Term definitions	Definitions of key terms such as capacitor units, capacitor banks, and inherent inductance are clarified.	Applicable to the DC side of converter stations in high-voltage DC transmission systems.	Aligned with international standards to ensure technical consistency.
Use conditions	Includes normal use conditions and special use conditions (such as high altitude, high temperature environment, etc.).	Applicable to capacitor selection and installation under different climate and regional conditions.	Fully considers the diversity of actual operating environment.
Test requirements	Specifies the specific content and methods of routine tests, type tests and acceptance tests.	Ensures the reliability and safety of capacitors in design, manufacturing and operation.	The test requirements are strict and meet the high reliability requirements of high-voltage DC systems.

Standard formulation background and technology evolution analysis

With the rapid development of high-voltage direct current (HVDC) systems, DC converters, as one of the core devices, face higher performance requirements for capacitor units and capacitor banks in their auxiliary circuits. The formulation of GB/T 34865-2017 standard is based on the research and practical experience of relevant technologies at home and abroad, and focuses on solving the following problems:

High reliability requirements: The operating environment of HVDC system is complex, requiring capacitors to operate stably for a long time under high temperature, high altitude and strong vibration conditions.
Fast response characteristics: The opening and closing process of DC conversion switch requires capacitors to have fast charging and discharging capabilities to ensure the dynamic response performance of the system.
Environmental protection requirements: The standard clearly stipulates the safety and degradability of impregnated materials to avoid pollution to the environment.

Implementation suggestions

In order to ensure the effective implementation of GB/T 34865-2017 standard, the following suggestions are put forward:

Design stage: In the design of capacitor bank, multiple factors such as mechanical load, internal fault electric power and wind power should be fully considered to ensure its adaptability in complex environment.
Manufacturing stage: The manufacturer shall strictly follow the standard requirements for material selection and process control, especially in welding, surface treatment and insulation performance, to ensure that the product quality meets the specifications.
Test verification: Routine tests and type tests are important guarantees for the quality of capacitors. It is recommended to strengthen random inspections during the manufacturing process and establish a complete test record system.
Installation and operation: The installer shall select capacitors with appropriate temperature categories and insulation levels according to environmental conditions, and design the cooling system in strict accordance with standard requirements to ensure long-term and stable operation of the equipment.