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GB/T 2900.50-2008Electrotechnical terminology -- Generation, transmission and distribution of electricity -- General (English PDF)

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China

Level / Type

National · Recommended

Issue date

June 18, 2008

Implementation date

May 1, 2009

Scope

GB/T 2900.50-2008 (Electrotechnical terminology -- Generation, transmission and distribution of electricity -- General) is available as an English-translated PDF.

GB/T 2900.50-2008 — This Part specifies the terms related to the common parts in the generation, transmission and distribution of electricity. This Part applies to the planning, management and design of the electrical power system, as well as the generation, transmission and distribution of electricity, etc.

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Document preview — GB/T 2900.50-2008

National Standard of the People's Republic of China

ICS: 01.040.29
Classification: K 04

Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China

Foreword...3
1 Scope...5
2 Terms and Definitions...5
2.1 Basic Terminology...5
2.2 System Configuration...8
2.3 Equipment...11
2.4 High-voltage DC System...13
Appendix A (normative) Supplementary Terminology...14
English Indexes...15

Foreword

This is Part 50 of GB/T 2900.

This Part modifies and adopts IEC 60050-601:1985 International Electrotechnical Vocabulary

- Chapter 601: Generation, Transmission and Distribution of Electricity - General, and

modifies the definitions of some terms and adds Appendix A with reference to the document

(1/1902/CD) released by the International Electrotechnical Commission in 2003.

In comparison with IEC 60050-601:1985, this Part has the following technical differences:

---601-01-33 is added.

---The definitions of 601-01-17, 601-01-10, 601-02-06, 601-02-32, 601-02-33 and 601-

03-10 are modified.

---"601-01-28 middle voltage (MV)" is deleted.

---The abbreviation of the English term "gas insulated line" in "601-03-06 gas insulated

line" does not use the original "GIC" by the IEC, instead, "GIL", which is currently

officially adopted internationally and in China is adopted.

---In accordance with 1/1902/CD, the following terms are added:

601-02-28 circuit (in electric power systems);

601-02-29 line tap, tee point;

601-02-30 line section;

601-02-31 line segment;

601-02-32 interchange point;

601-02-33 delivery point.

---Appendix A (normative) is added, which supplements several terms regarding voltage

levels (in accordance with the terminology of electricity approved by China National

Committee for Terminology in Science and Technology).

This Part serves as a replacement for GB/T 2900.50-1998 Electrotechnical Terminology -

Generation, Transmission and Distribution of Electricity - General.

In comparison with GB/T 2900.50-1998, the main changes are as follows:

---The entry number of the terms is modified;

---The definitions of some terms are modified;

Electrotechnical Terminology - Generation, Transmission

and Distribution of Electricity - General

1 Scope

This Part specifies the terms related to the common parts in the generation, transmission and

distribution of electricity.

This Part applies to the planning, management and design of the electrical power system, as

well as the generation, transmission and distribution of electricity, etc.

2 Terms and Definitions

2.1 Basic Terminology

601-01-01 electrical power system; electricity supply system

The combination of all devices and equipment for the generation, transmission and distribution

of electricity.

601-01-02 electrical power system; electrical power network

The combination of various devices and equipment for the transmission and distribution of

electricity, and substations, electric lines or cables.

NOTE: the boundaries of each part of the electricity grid can be determined on a case-by-case basis

(for example, geographical location, ownership and voltage level, etc.).

601-01-03 alternating current system; AC system

A system powered by AC voltage.

601-01-04 direct current system; DC system

A system powered by DC voltage.

601-01-05 power frequency

The nominal frequency value of an AC power system.

601-01-06 generation of electricity

The process of converting other forms of energy into electricity.

601-01-07 conversion of electricity

change of electricity

The characteristic of changing current, voltage and frequency by a converter.

601-01-08 transformation of electricity

Transformation of electrical energy through a power transformer.

601-01-09 transmission of electricity

Transmission of electrical energy from power stations to regions where electricity is consumed.

601-01-10 distribution of electricity

Supply electricity to users in an electricity consumption region.

601-01-11 interconnection (of power systems)

Between electrical power systems, the exchange of electrical energy is carried out through the

connection of circuits and (or) converters, transformers and other equipment.

601-01-12 interconnected systems

A system, in which, several electrical power systems are connected by interconnected lines.

601-01-13 asynchronous link

A connection between AC systems operating at different frequencies.

601-01-14 short-circuit power

The product of the short-circuit current at a point in the system and the agreed voltage (usually

referred to as the operating voltage).

601-01-15 load in a system

1) active, reactive or apparent power generated, transmitted or distributed within a

system.

2) the power required by a group of users divided in accordance with their characteristics

and properties (such as: thermal load and daily reactive power load, etc.).

601-01-16 peak load

The maximum value of the load during a given period (for example, a day, a month or a year).

601-01-17 load curve

......

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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