It is an important factor that affects the normal operation of power supply, power consumption system and electrical equipment, and is closely related to national life. Therefore, a series of power quality standards have been published by relevant national departments, including GB / T 18481-2001 power quality temporary overvoltage and transient overvoltage, GB / T 12325-2008 power quality supply voltage deviation, and GB / T 12326-2008 "Short time voltage fluctuation and power quality standard" and "power quality standard for short-term voltage dips" and "power quality standard (GB 15945-2008)", "power quality standard for short-term voltage dips and power quality (GB 15945-2008)".
Power quality temporary overvoltage and transient overvoltage (GB / T 18481-2001)
"GB / T 18481-2001 power quality temporary overvoltage and transient overvoltage" aims to specify the requirements of power quality related to temporary and transient overvoltage, the corresponding insulation level of electrical equipment and overvoltage protection methods. Detailed provisions on this can be found in relevant standards. Therefore, this standard does not replace the published standards, but gives a brief description of such overvoltage characteristics and related issues from the perspective of power quality. Compared with the Chinese voltage content of foreign power quality standards, it is more detailed.
This standard specifies the requirements of temporary overvoltage and transient overvoltage acting on electrical equipment in AC power system, insulation level of electrical equipment, and overvoltage protection methods.
In case of over-voltage power quality problems, it shall be implemented according to the provisions of this standard, combined with the characteristics of power grid, equipment and practical environment, and refer to relevant professional standards.
This standard does not apply to overvoltage caused by static electricity, touching high-voltage system and steady-state waveform distortion (harmonics).
Detailed power quality standard download:
Power quality temporary overvoltage and transient overvoltage (GB / T 18481-2001)
"GB / T 12325-2008 power quality supply voltage deviation" stipulates the limit value, measurement and qualification rate statistics of power supply voltage deviation. This standard is applicable to the deviation between the supply voltage and the nominal voltage of the AC 50 Hz power system under normal operation conditions.
This power quality standard clearly defines the terms and definitions of power supply voltage deviation, and describes the limitation and measurement of power supply voltage deviation in detail.
Detailed power quality standard download:
Power quality voltage fluctuation and flicker (GB / T 12326-2008)
"GB / T 12326-2008 power quality voltage fluctuation and flicker" specifies the limit value of voltage fluctuation and flash edge, and the test, calculation and evaluation methods. It is suitable for the situation that the voltage of the common connection point changes rapidly due to the fluctuating load under the normal operation mode of AC 50 Hz power system, and it may cause obvious feeling of light flicker.
This power quality standard standardizes the terms and definitions of voltage fluctuation and flicker, makes clear requirements for the current situation of voltage fluctuation and flicker, and describes the measurement and calculation of voltage fluctuation and flicker.
Detailed power quality standard download:
IV GB / T 15945-2008 power quality power system frequency deviation
GB / T 15945-2008 power quality power system frequency deviation specifies the limit value, measurement and statistical method of qualified rate of power system frequency deviation with nominal frequency of 50 Hz. This standard is not applicable to the frequency deviation limits of electrical equipment.
Detailed power quality standard download:
Power quality voltage sag and short time interruption (GB / T 30137-2013)
GB / T 30137-2013 power quality voltage sag and short-term interruption specifies the indicators, test, statistics and evaluation methods of voltage sag and short-term interruption, which is applicable to AC 50 Hz power system.
This power quality standard standardizes the terms and definitions of voltage sag and short-term interruption, clearly indicates the recommended indicators of voltage sag and short-term interruption, describes in detail the detection and calculation methods of voltage sag and short-term interruption, and makes detailed requirements for technical requirements of detection instruments.
Detailed power quality standard download:
6 GB / T 24337-2009 power quality harmonics in public power grid
This part of GB / T 24337-2009 power quality harmonics in public power grid specifies the allowable limit value and measurement method of harmonic voltage in public power grid, which is applicable to the public power grid with AC rated frequency of 50 Hz and nominal voltage of 220 kV and below.
This power quality standard has made a plan for the terms and definitions of electric energy, made clear requirements for the limit value of power quality, and made a clear specification for the measurement value, measurement conditions and accuracy of measuring instruments.
一GB/T 18481-2001 电能质量 暂时过电压和瞬态过电压
It is an important factor that affects the normal operation of power supply, power consumption system and electrical equipment, and is closely related to national life. Therefore, a series of power quality standards have been published by relevant national departments, including GB / T 18481-2001 power quality temporary overvoltage and transient overvoltage, GB / T 12325-2008 power quality supply voltage deviation, and GB / T 12326-2008 "Short time voltage fluctuation and power quality standard" and "power quality standard for short-term voltage dips" and "power quality standard (GB 15945-2008)", "power quality standard for short-term voltage dips and power quality (GB 15945-2008)".
Power quality temporary overvoltage and transient overvoltage (GB / T 18481-2001)
"GB / T 18481-2001 power quality temporary overvoltage and transient overvoltage" aims to specify the requirements of power quality related to temporary and transient overvoltage, the corresponding insulation level of electrical equipment and overvoltage protection methods. Detailed provisions on this can be found in relevant standards. Therefore, this standard does not replace the published standards, but gives a brief description of such overvoltage characteristics and related issues from the perspective of power quality. Compared with the Chinese voltage content of foreign power quality standards, it is more detailed.
This standard specifies the requirements of temporary overvoltage and transient overvoltage acting on electrical equipment in AC power system, insulation level of electrical equipment, and overvoltage protection methods.
In case of over-voltage power quality problems, it shall be implemented according to the provisions of this standard, combined with the characteristics of power grid, equipment and practical environment, and refer to relevant professional standards.
This standard does not apply to overvoltage caused by static electricity, touching high-voltage system and steady-state waveform distortion (harmonics).
Detailed power quality standard download:
Power quality temporary overvoltage and transient overvoltage (GB / T 18481-2001)
"GB / T 12325-2008 power quality supply voltage deviation" stipulates the limit value, measurement and qualification rate statistics of power supply voltage deviation. This standard is applicable to the deviation between the supply voltage and the nominal voltage of the AC 50 Hz power system under normal operation conditions.
This power quality standard clearly defines the terms and definitions of power supply voltage deviation, and describes the limitation and measurement of power supply voltage deviation in detail.
Detailed power quality standard download:
Power quality voltage fluctuation and flicker (GB / T 12326-2008)
"GB / T 12326-2008 power quality voltage fluctuation and flicker" specifies the limit value of voltage fluctuation and flash edge, and the test, calculation and evaluation methods. It is suitable for the situation that the voltage of the common connection point changes rapidly due to the fluctuating load under the normal operation mode of AC 50 Hz power system, and it may cause obvious feeling of light flicker.
This power quality standard standardizes the terms and definitions of voltage fluctuation and flicker, makes clear requirements for the current situation of voltage fluctuation and flicker, and describes the measurement and calculation of voltage fluctuation and flicker.
Detailed power quality standard download:
IV GB / T 15945-2008 power quality power system frequency deviation
GB / T 15945-2008 power quality power system frequency deviation specifies the limit value, measurement and statistical method of qualified rate of power system frequency deviation with nominal frequency of 50 Hz. This standard is not applicable to the frequency deviation limits of electrical equipment.
Detailed power quality standard download:
Power quality voltage sag and short time interruption (GB / T 30137-2013)
GB / T 30137-2013 power quality voltage sag and short-term interruption specifies the indicators, test, statistics and evaluation methods of voltage sag and short-term interruption, which is applicable to AC 50 Hz power system.
This power quality standard standardizes the terms and definitions of voltage sag and short-term interruption, clearly indicates the recommended indicators of voltage sag and short-term interruption, describes in detail the detection and calculation methods of voltage sag and short-term interruption, and makes detailed requirements for technical requirements of detection instruments.
Detailed power quality standard download:
6 GB / T 24337-2009 power quality harmonics in public power grid
This part of GB / T 24337-2009 power quality harmonics in public power grid specifies the allowable limit value and measurement method of harmonic voltage in public power grid, which is applicable to the public power grid with AC rated frequency of 50 Hz and nominal voltage of 220 kV and below.
This power quality standard has made a plan for the terms and definitions of electric energy, made clear requirements for the limit value of power quality, and made a clear specification for the measurement value, measurement conditions and accuracy of measuring instruments.
