GB/T 20321-2023Inverter of wind and solar energy supply power system for off-grid (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting.

This document replaces GB/T 20321.1-2006 "Inverters for off-grid wind and solar power generation systems Part 1: Technical requirements" and GB/T 20321.2-2006 "Inverters for off-grid wind and solar power generation systems Part 2: Test methods". This document ends with Based on GB/T 20321.1-2006, it integrates Chapter 5 "Test Contents and Test Methods" of GB/T 20321.2-2006 and Chapter 6 "experiment report". Compared with GB/T 20321.1-2006 and GB/T 20321.2-2006, except for structural adjustment and editorial changes, the main The technical changes are as follows:

a) Changed the "basic parameters and model compilation method", deleted the square wave, changed "rated capacity VA" to "rated power kW" (see Chapter 4, Chapter 4 of GB/T 20321.1-2006);

b) Deleted "general requirements" (see 5.1 of GB/T 20321.1-2006);

c) Changed the index requirements for "output frequency" (see 5.3, 5.4 of GB/T 20321.1-2006);

d) Deleted "temperature rise" (see 5.7 of GB/T 20321.1-2006);

e) Changed the overvoltage protection and undervoltage protection requirements in "Protection" (see 5.6, 5.8 of GB/T 20321.1-2006);

f) Changed the index requirements of "load level" (see 5.7, 5.9 of GB/T 20321.1-2006);

g) Added "remote monitoring" (see 5.9);

h) Deleted "high and low temperature" (see 5.11 of GB/T 20321.1-2006);

i) Delete the "requirements for components and auxiliary parts" (see 5.14 of GB/T 20321.1-2006);

j) Deleted the "working time before the first failure" (see 5.18 of GB/T 20321.1-2006);

k) Changed the "test method" (see Chapter 6, Chapter 6 of GB/T 20321.1-2006);

l) Changed the "inspection rules" (see Chapter 7, Chapter 7 of GB/T 20321.1-2006);

m) Change "test report" to "test item" (see 7.3, Chapter 6 of GB/T 20321.2-2006).

1 Scope

This document specifies the basic parameters and model compilation of inverters (hereinafter referred to as "inverters") used in off-grid wind and solar power generation systems Methods, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage, and quality assurance period.

This document applies to inverters used in off-grid wind and solar power generation systems.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 191 Packaging, storage and transportation icon marks

GB/T 2423.1 Environmental testing for electrical and electronic products - Part 2: Test methods Test A. Low temperature

GB/T 2423.2 Environmental testing for electric and electronic products - Part 2: Test methods Test B. High temperature

GB/T 2423.3 Environmental testing - Part 2: Test methods Test Cab. Constant damp heat test

GB/T 2423.7-2018 Environmental testing Part 2: Test method Test Ec. Shock caused by rough handling (mainly used for equipment type sample)

GB/T 2423.10 Environmental testing Part 2: Test method Test Fc. Vibration (sinusoidal)

GB/T 2900.33 Electrotechnical Terminology Power Electronic Technology

GB/T 3768 Acoustic sound pressure method for measuring sound power level and sound energy level of noise sources adopts the simple method of enveloping the measuring surface above the reflecting surface. easy method

GB/T 3859.3-2013 General requirements for semiconductor converters and grid commutation converters Part 1-3. Transformers and reactors

3 Terms and Definitions

The terms and definitions defined in GB/T 2900.33 and GB/T 3859.3-2013 apply to this document.

4 Basic parameters and model compilation method