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Chinese Standard: 'DLT5056-2007'
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DL/T 5056-2007
ICS 29.240.10
P 62
Record No.: J761-2007
Replacing DL/T 5056-1996
Technical Code of General Plan Design for Substation
Issued by: National Development and Reform Commission
Table of Contents
Foreword ... 3 
1 Scope ... 6 
2 Normative References ... 7 
3 General Principles ... 8 
4 General Planning ... 9 
5 General Plane Layout ... 11 
6 Vertical Layout ... 18 
7 Underground Pipeline (trough) Layout ... 28 
8 Roads ... 35 
9 Treatment and Afforestation of Outdoor Power Distribution Unit Site ... 39 
10 Technical and Economic Indicators ... 41 
Technical Code of General Plan Design for Substation
1 Scope
This Standard stipulates the basic technical requirements of general plan design for
This Standard is applicable to the general plan design for newly constructed or
expanded substations with the voltage level of 110 kV ~ 750 kV. The general plan
design for substations with the voltage level of above 750 kV, reconstructed
substations and converter stations may also take this as a reference.
2 Normative References
Through the reference in this Standard, clauses in the following documents become
clauses of this Standard. In terms of references with a specific date, all the subsequent
modification orders (excluding the corrected content) or revised editions are not
applicable to this Standard. However, all parties that reach an agreement in
accordance with this Standard are encouraged to explore the possibility of adopting
the latest versions of these documents. In terms of references without a specific date,
the latest versions are applicable to this Standard.
GB 50007 Code for Design of Building Foundation
GB 50016 Code for Fire Protection Design of Buildings
GB 50187 Code for Design of General Layout of Industrial Enterprises
GB 50201 Standard for Flood Control
GB 50229 Code for Design of Fire Protection for Fossil Fuel Power Plants and
GB 50330 Technical Code for Building Slope Engineering
GBJ 22 Specifications for the Design of Factory and Mine Roads
DL/T 5032 Technical Code of General Plan Transportation Design for Fossil Fuel
Power Plants
3 General Principles
3.0.1 The general plan design for substations must comprehensively implement the
nation’s fundamental construction policies; reflect the nation’s technical and economic
policies; unify and clarify construction standards; guarantee that newly constructed
(expanded) substations are safe, reliable, technologically advanced, affordable and
consistent with the national conditions.
3.0.2 The general plan design for substations must establish an overall viewpoint;
conduct in-depth investigation and survey; rely on technological progress; design
meticulously; continuously summarize experience; energetically and deliberately
promote domestic and foreign advanced technologies; adapt measures to local
conditions and adopt mature new materials, processes and plans; satisfy the
requirements of sustainable development.
3.0.3 The general plan design for substations shall comply with relevant stipulations of
Land Administration Law of the People’s Republic of China; comply with the nation’s
land utilization policies; adapt measures to local conditions; implement land
conservation and reasonable land utilization; enhance land utilization rate; make the
most of wastelands, badlands and sloping lands; refuse to occupy, or, occupy very little
farmlands. Furthermore, the general plan design for substations shall reasonably
utilize landforms, decrease site leveling soil (stone) quantity and demolition of the
existing facilities and constructions (structures); avoid or reduce land acquisition on
behalf of others. Through the techno-economic comparison of multiple plans, optimize
design plans; reduce construction costs; shorten construction periods; create
conditions for civilized construction.
3.0.4 This Standard was formulated in accordance with the principles of GB 50187
Code for Design of General Layout of Industrial Enterprises. Except from the execution
of this Standard, the general plan design for substations constructed under special
natural conditions, such as mountainous areas, earthquake areas, collapsible loess
areas, expansive soil areas, soft soil areas, permafrost areas and salinized soil areas,
shall still comply with the relevant stipulations in the existing......
Related standard:   DL/T 5143-2018  DL/T 5365-2018
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