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DL/T 5155-2016: Technical Code for Designing AC Station Service of 220kV~1000kV Substation
DL/T 5155-2016
POWER INDUSTRY STANDARD OF
THE PEOPLE?€?S REPUBLIC OF CHINA
ICS 27.100
P 62
Registration number: J173-2016
P DL/T 5155-2016
Replacing DL/T 5155-2002
Technical code for design AC station service
of 220kV ~ 1000kV substation
ISSUED ON: AUGUST 16, 2016
IMPLEMENTED ON: DECEMBER 01, 2016
Issued by: National Energy Administration
POWER INDUSTRY STANDARD OF THE
PEOPLE?€?S REPUBLIC OF CHINA
Technical code for design AC station service
of 220kV ~ 1000kV substation
Replacing DL/T 5155-2002
Main drafting organization: Electrical Planning and Design Institute
Approved by: National Energy Administration
Date of implementation: December 01, 2016
2016 Beijing
Announcement of National Energy Administration
2016 No.6
According to the relevant provisions of the ?€?Notice of the National Energy
Administration on Printing and Distributing the Industrial Standardization
Management Measures for Energy Sector (Trial) and Detailed Rules of
Implementation?€? (GNJKJ [2009] No.52), after review, the National Energy
Administration approved 144 industrial standards such as ?€?Specification on
quality acceptance of construction of conventional island and supporting
facilities of nuclear power plant - Part 8: Thermal insulation and paint", including
75 energy standards (NB) and 69 power standards (DL), which are now
released.
Attachment: Industry standards catalog
National Energy Administration
August 16, 2016
Attachment:
Industrial standard catalog
No. Standard No. Standard name
Replaced
standard
Adopted
standard No.
Date of
approval
Date of
implementation
?€??€?
129 DL/T 5155-2016
Technical code for design
AC station service of 220kV
~ 1000kV substation
DL/T 5155-
2002 2016-08-16 2016-12-01
?€??€?
Table of Contents
Foreword ... 6??
1 General provisions ... 8??
2 Terms ... 8??
3 Station service system wiring ... 9??
3.1 Station service power supply ... 9??
3.2 Load classification ... 10??
3.3 Power supply manner ... 11??
3.4 Power supply connection ... 12??
3.5 Application of neutral grounding in auxiliary power system ... 12??
3.6 AC uninterruptible power supply ... 13??
4 Station service load analysis ... 13??
4.1 Principles of load calculations ... 13??
4.2 Load account procedure ... 14??
5 Choice of station service transformer ... 14??
6 Short-circuit current calculation and choice of electrical equipment and
conductors ... 15??
6.1 Short-circuit current calculation ... 15??
6.2 High-voltage switchyard ... 16??
6.3 Station service low-voltage equipment ... 16??
6.4 Choice of conductor ... 20??
6.5 Diesel-engine generators ... 20??
7 Station service equipment arrangement ... 20??
7.1 General requirements ... 20??
7.2 Arrangement of station service transformer... 21??
7.3 Arrangement of switchboard ... 22??
7.4 Arrangement of diesel-engine generator ... 24??
7.5 Clean energy and energy storage device ... 25??
7.6 Requirements for constructions ... 25??
8 Maintenance power supply ... 26??
9 Protection against electric shock ... 26??
10 Control, signaling, metering and automatic devices of station service system
... 27??
10.1 Station service power relay ... 27??
10.2 Station service power control, signaling and measure device ... 28??
10.3 Metering system ... 29??
10.4 Power automatic transfer switching equipment ... 29??
Appendix A Load characteristic table ... 30??
Appendix B Voltage-regulation calculation ... 32??
Appendix C Calculation of short-circuit current in 380V power centers ... 35??
Appendix D 380V feeder working current calculation ... 38??
Appendix E Selection and verification of protect device and conductor ... 41??
Explanation of wording in this code ... 46??
List of quoted standards ... 47??
Foreword ... 7??
1 General provisions ... 9??
2 Terms ... 9??
3 Station service system wiring ... 10??
3.1 Station service power supply ... 10??
3.2 Load classification ... 11??
3.3 Power supply manner ... 12??
3.4 Power supply connection ... 13??
3.5 Application of neutral grounding in auxiliary power system ... 13??
3.6 AC uninterruptible power supply ... 14??
4 Station service load analysis ... 14??
4.1 Principles of load calculations ... 14??
4.2 Load account procedure ... 15??
5 Choice of station service transformer ... 15??
6 Short-circuit current calculation and choice of electrical equipment and
conductors ... 16??
6.1 Short-circuit current calculation ... 16??
6.2 High-voltage switchyard ... 17??
6.3 Station service low-voltage equipment ... 17??
6.4 Choice of conductor ... 21??
6.5 Diesel-engine generators ... 21??
7 Station service equipment arrangement ... 21??
7.1 General requirements ... 21??
7.2 Arrangement of station service transformer... 22??
7.3 Arrangement of switchboard ... 23??
7.4 Arrangement of diesel-engine generator ... 25??
7.5 Clean energy and energy storage device ... 26??
7.6 Requirements for constructions ... 26??
8 Maintenance power supply ... 27??
9 Protection against electric shock ... 27??
10 Control, signaling, metering and automatic devices of station service system
... 28??
10.1 Station service power relay ... 28??
10.2 Station service power control, signaling and measure device ... 29??
10.3 Metering system ... 30??
10.4 Power automatic transfer switching equipment ... 30??
Appendix A Load characteristic table ... 31??
Appendix B Voltage-regulation calculation ... 33??
Appendix C Calculation of short-circuit current in 380V power centers ... 36??
Appendix D 380V feeder working current calculation ... 39??
Appendix E Selection and verification of protect device and conductor ... 42??
Explanation of wording in this code ... 47??
List of quoted standards ... 48??
Foreword
According to the requirements of the "Notice of National Energy Administration
on the Issuance of the Compilation/Revision Plan for the first batch of Energy
Industry Standard in 2010" (GNKJ [2010] No.320), the compilation team
conducted extensive investigations and studies, carefully summarized the
design experiences on the station service for 220kV and above substations,
absorbed the latest technological development results, solicitated extensive
opinions, to revise the original "Technical code for design AC station service of
220kV ~ 500kV substation" DL/T 5155-2002.
This standard has 10 chapters and 5 appendixes. The main technical contents
include general provisions; terms; station service system wiring; station service
load analysis; choice of station service transformer; short-circuit current
calculation and choice of electrical equipment and conductor; station service
equipment arrangement; maintenance power supply; protection against electric
shock; control, signaling, metering and automatic devices of station service
system.
The main contents of this revision are:
1. The original standard applies to the substation which has a voltage ranging
from 220kV to 500kV. In this revision, it includes the requirements for the
station service of 750kV and 1000kV substations, changes the standard
name to ?€?Technical code for design AC station service of 220kV ~ 1000kV
substation"
2. The original standard has 8 chapters. This revision adds two separate
chapters of "terms" and "protection against electric shock"; in addition, the
chapter 5 "Selection of station service transformers" in the original
standard is divided into two chapters "Station service load analysis" and
"Choice of station service transformer"; move the clause 7.5 "maintenance
power supply" from chapter 7 of the original standard out to form an
independent chapter; the other chapter contents are adjusted accordingly.
After this revision, this standard has 10 chapters, which increases 2
chapters as compared with the original standard;
3. In the choice of station service transformer, add the requirements for
voltage regulation and wiring;
4. Some substations are difficult to connect external power supply due to
special geographical conditions. This revision adds the requirements for
self-provided emergency power supply in the station;
5. Add the principle requirements for the application of clean energy;
6. Supplement the requirements for station service power metering devices.
From the date of implementation, this standard replaces the "Technical code for
design AC station service of 220kV ~ 500kV substation" DL/T 5155-2002.
For this standard, the National Energy Administration is responsible for its
management; the Electrical Planning and Design Institute proposes it; the
Energy Industry Power Grid Design Standardization Technical Committee is
responsible for daily management; the China Power Engineering Consulting
Group Huadong Electric Power Design Institute Co., Ltd. is responsible for the
interpretation of specific technical contents. If you have any comments or
suggestions during the implementation, please send it to the Electrical Planning
and Design Institute (Address: 65 Ande Road, Xicheng District, Beijing, Zip
code: 100120).
The main drafting organizations, the main drafters, the main reviewer of this
standard:
The main drafting organizations: China Power Engineering Consulting
Group Huadong Electric Power Design Institute Co., Ltd.
The main drafters: Wang Xiaojing, Wang Xiangping, Yu Zheng, Hu Wenhua,
Le Dangjiu, Chen Yue, Cao Sheng, Chao Qiong, Pan Yihua, Wang Weihua,
Deng Ming, Zhang Jingfeng, Wang Weiying, Zheng Yi
Main reviewers: Li Baojin, Fang Jing, Yan Shihai, Chen Zhirong, Li
Zhenghong, Yu Kewu, Shen Aimin, Chen Hongming, Zhang Yuming, Pu Hao,
Wu Mianqiong, Kong Zhida, Qian Feng, Chen Ping, Tang Hongde
Technical code for design AC station service
of 220kV ~ 1000kV substation
1 General provisions
1.0.1 In order to make the station service design of the substation meet the
national technical and economic policies, safe, reliable, economical, in line with
national conditions, it hereby develops this standard.
1.0.2 This standard is applicable to the design of the AC station service system
for the newly built, extended, reconstructed 220kV ~ 1000kV substation, switch
station, series compensation station.
1.0.3 Station service design shall use energy-saving, environmentally friendly,
safe, reliable electrical products which are in line with national standards.
1.0.4 The design of the station service system shall be based on the
characteristics and scale of the project, combining the recent period and future,
to meet the short-term needs while meeting the long-term requirements.
1.0.5 In addition to complying with the provisions of this standard, the design of
station service power shall also comply with the relevant national standards.
2 Terms
2.0.1
Power supply
AC power supply for long-term supply for the working load in the substation.
2.0.2
Standby supply
AC power supply which supplies power only when the power supply in the
substation is cut off.
2.0.3
Emergency power supply
An AC power supply that supplies power to the load which, in case of power
failure within a limited period of time, may affect the safety of the person or
cause the significant decrease of power delivery of the substation.
2.0.4
AC uninterruptible power supply
A power supply device consisting of a rectifier and an inverter, which
cooperates with a battery pack of a substation's DC power supply, to provide
an uninterrupted AC power supply that meets the requirements.
2.0.5
Station service switchboard
The station service low-voltage switchboard which is powered by the station
service transformer or the external low-voltage AC power supply, meanwhile
distributes power to the load in the station.
3 Station service system wiring
3.1 Station service power supply
3.1.1 The station service power supply for the 220kV substation should be 2
circuits of equal-capacity and mutual-standby power supply from the low-
voltage side of different main transformers, respectively. When there is only one
main transformer in the initial stage, in addition to connecting 1 circuit of power
supply from it, it shall also connect 1 circuit of reliable power supply from outside
of the station.
3.1.2 The station service power supply for the 330kV ~ 750kV substation shall
be 2 circuits of equal-capacity and mutual-standby power supply from the low-
voltage side of different main transformers, respectively, as well as 1 circuit of
reliable station service standby power from outside of the station. When there
is only one (set) main transformer in the initial stage, in addition to connecting
1 circuit of power supply from it, it shall also connect 1 circuit of reliable power
supply from outside of the station.
3.1.3 The station service power supply for the 1000kV substation shall be 2
circuits of equal-capacity and mutual-standby power supply from the low-
voltage side of different main transformers, respectively, as well as 1 circuit of
reliable station service standby power from outside of the station. When there
is only one (set) main transformer in the initial stage, it should also connect 2
circuits of reliable power supply from two different substations.
3.1.4 The switchyard should connect 2 reliable power supplies from the outside
of the station. When there is a high-voltage shunt reactor in the station, one
circuit may use a high anti-extraction power supply. The configuration of the
power supply for the series compensation station shall be carried out in
accordance with the relevant provisions of the current power industry standard
"Technical code for design of series compensator station" DL/T 5453.
3.1.5 The capacity of the station service power supply for each circuit shall meet
the needs of the load power consumption of the entire station.
3.1.6 When there is no condition to connect the reliable power supply from
outside of the station, it may provide a self-provided emergency power supply
in the station, the capacity of which shall meet the power consumption ...