This standard defines and classifies high-voltage passive power filters, and specifies the design principles, design basis, design methods, basic contents of application technologies, etc.
This standard is applicable to high-voltage passive power filters (hereinafter referred to as filters) with power frequency of 50 Hz and rated voltage from1,000 V (inclusive) to 110 kV (inclusive).
In addition to this guide, the design and application of filters shall also comply with those specified in the current relevant standards and codes of the nation.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 1984 Specification of high-voltage alternating-current circuit-breakers (GB 1984-2003; IEC 62271-100: 2001, MOD)
GB 1985 Specifications for HV AC disconnectors and earthing switches (GB 1985-2004; IEC 62271-102: 2002, MOD)
GB 3906 Alternating-current metal-enclosed switchgear and controlgear for rated voltages above 3.6 kV and up to and including 40.5 kV (GB 3906-2006; IEC 62271-200: 2003, MOD)
GB 4208 Degrees of protection provided by enclosure (IP code) (GB 4208-2008; IEC 60529: 2001, IDT)
GB/T 11022 Common specifications for high-voltage switchgear and controlgear standards (GB/T 11022-1999; eqv IEC 60694: 1996)
GB/T 12325 Power quality - Deviation of supply voltage
GB/T 14549-1993 Quality of electric energy supply - Harmonics in public supply network
GB/T 16927.1 Hign voltsge test techniques - Part 1: General test requirements (GB/T 16927.1-1997; eqv IEC 60060-1: 1989)
GB/T 16927.2 High-voltage test techniques - Part 2: Measuring systems (GB/T 16927.2-1997; eqv IEC 60060-2:1994)
GB 50227 Code for design of installation of shunt capacitors
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 Harmonic
3.1.1
point of common coupling
PCC
connection where users access the public supply network
3.1.2
harmonic measurement points
specific points for harmonic measurement of public bus and power lines or user bus and power supply lines and related equipment or devices of the power grid
3.1.3
fundamental component
components with the same frequency as the power frequency of the power grid obtained by carrying out Fourier series decomposition on periodic nonsinusoidal alternating current component
3.1.4
harmonic component
components with the frequency being an integer multiple of the fundamental frequency greater than 1 obtained by carrying out Fourier series decomposition on periodic nonsinusoidal alternating current component
3.1.5
harmonic order
h
integer ratio of harmonic frequency to fundamental frequency
3.1.6
total harmonic content
square root value of the amount obtained by subtracting the fundamental component from the whole periodic nonsinusoidal alternating current corresponding to the power frequency of the power grid (harmonic voltage content or harmonic current content)
