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DL/T 5218-2012: Technical code for the design of 220kV ~ 750kV substation---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/DLT5218-2012
POWER INDUSTRY STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 29.240
P 62
Registration number. J1459-2012
P DL/T 5218-2012
Replacing DL/T 5218-2005
Technical code for the design of
220kV ~ 750kV substation
Issued on. AUGUST 23, 2012
Implemented on. DECEMBER 01, 2012
Issued by. National Energy Administration
POWER INDUSTRY STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
Technical code for the design of
220kV ~ 750kV substation
Replacing DL/T 5218-2005
Main drafting organization. Electrical Planning and Design Institute
Approved by. National Energy Administration
Date of implementation. December 01, 2012
2012 Beijing
Table of Contents
Foreword... 7
1 General provisions... 9
2 Terms... 10
3 Selection of the substation location... 12
4 General plan & layout of the substation... 14
5 Primary electrical... 24
6 System and secondary electrical... 32
7 Civil works... 37
8 Heating, ventilation and air conditioning... 45
9 Water supply and drainage... 47
10 Fire protection... 48
11 Environmental protection... 50
12 Labor safety and occupational health... 53
13 Energy saving... 56
Explanations of wording in this standard... 59
List of quoted standards... 60
1 General provisions
1.0.1 In order to meet the needs of national and industry standardization
construction, reach a unified standard technical principle for design of
substation, allow the design of substation to meet the relevant national policies,
laws, regulations, reach the requirements of safety and reliability, advanced and
applicability, energy saving and environmentally friendly, it hereby develops this
standard.
1.0.2 This standard is applicable to the design of the newly built, reconstructed,
extended work of substation (switchyard) which has an AC voltage of 220kV ~
750kV.
1.0.3 Substation design shall be combined with engineering features, actively
and deliberately adopt new technologies, new device, new materials, new
processes with application conditions.
1.0.4 In addition to the implementation of this standard, the design of substation
shall also comply with the relevant national standards.
2 Terms
2.0.1
Substation
Part of the power system, which is concentrated in a defined location,
including terminals, switches and control device, buildings and transformers
for power transmission or distribution. It usually includes the facilities (such
as protective devices) required for the safety and control of power system.
2.0.2
Uninterruptible power supply
The power supply which consists of a battery pack, an inverter, other circuits,
that provides AC power when the power grid is out of power.
2.0.3
Substation automation system
A computer application system that implements functions such as
information collection, processing, monitoring, control, operation
management of substation based on computer, network, communication
technologies.
2.0.4
Unattended operation mode
An operation management mode, in which the operation monitoring of the
substation and the main control operation are carried out by the remote
control end, the device of the substation is regularly patrolled and maintained.
There are no on-duty personnel in the substation for fixed operation and
maintenance.
3 Selection of the substation location
3.0.1 The site selection of the substation shall be based on the network
structure, load distribution, urban-rural planning, land acquisition & demolition
and the following provisions of the power system planning and design. It shall
use technical and economic comparison and economic benefit analysis to
select the optimal solution of site location.
3.0.4 The selection of substation's location shall be based on transportation
conditions and substation's construction needs, facilitating the connection of
incoming roads and large-piece transportation.
3.0.5 The substation's location shall have suitable geological and topographical
conditions. It shall avoid unfavorable geological structures such as landslides,
debris flows, subsidence zones, earthquake-fracture zones. It should avoid
submerged caves, goafs, exposed and concealed river ponds, shore scouring
areas, areas prone to rolling stones, try to avoid or reduce damage to forests
and natural landscapes.
3.0.8 There shall be a reliable source of water for production and domestic use
near the substation's location. When groundwater is used as a water source, it
shall carry out hydrogeological surveys or explorations, submit report.
3.0.9 There shall be reliable power supply around the substation's location
which meet the requirements of substation construction and external power
supply for station service.
3.0.12 The seismic fortification intensity of the substation's location shall comply
with the current national standard "Seismic ground motion parameter zonation
map of China" GB 18306.
4 General plan & layout of the substation
4.1 Plan of the substation
4.1.1 The general plan of the substation shall be coordinated with the local
urban planning or industrial zone planning. It should make full use of the nearby
public facilities such as traffic, water supply and drainage, flood control.
4.1.3 For the substation in flood control and seismic fortification areas, it shall,
based on such factors as geology and topography, arrange the main production
constructions (structures) in relatively favorable areas.
4.1.4 The positioning of substation's location shall rationally use geological and
topographical conditions. For the high and steep slope, it shall analyze its
stability and the impact on the building and structures, take safety measures to
prevent human and animal from falling.
4.2 General layout
4.2.1 The combination of plane and space of substation buildings shall,
according to the process requirements, make full use of natural terrain, to
ensure that the layout is compact and reasonable and the expansion is
convenient.
4.2.5 The fire hazard category and minimum fire resistance rating of each
building and structure of the substation shall not be lower than those specified
in Table 4.2.5.The design of the entire building and structure and their
components shall comply with the relevant provisions on fire prevention in
addition to the use function.
4.2.6 The minimum spacing of the building and structure in the substation shall
not be less than that specified in Table 4.2.6.
4.3 Vertical arrangement
4.3.1 The vertical design of the substation shall be carried out simultaneously
with the general layout, meanwhile shall be coordinated with the elevations of
the existing and planned roads, drainage systems, surrounding sites outside
the substation.
4.5 Road
4.5.1 The path of the substation's access road shall be determined
comprehensively according to the current situation of the road around the site,
combined with the long-term development plan, the substation plan and vertical
layout design.
4.6 Site treatment
4.6.1 In the outdoor power distribution device area, it should set the operation
floor according to the process requirements.
4.6.2 The substation site may adopt such treatment measures as gravel, pebble
pavement or lime soil closure, or it may be properly greened.
4.7 Fence and gate
4.7.1 The fence of the substation area should be a solid wall which has a height
of 2.2m ~ 2.8m. Where there are noise control requirements, the height of fence
of substation may be determined as needed.
4.7.2 The gate of the substation should use lightweight iron doors or electric
retractable doors. Unattended substations should have physical gates.
5 Primary electrical
5.1 Electrical circuit connection
5.1.1 The electrical circuit connection of the substation shall be determined
according to the status of the substation in the power system, the planned
capacity of the substation, the nature of the load, the total number of
components as connected to the line and transformer, the characteristics of the
device, etc. It shall meet the requirements of reliable power supply, flexible
operation, convenient operation and maintenance, investment savings, ease of
transition or expansion.
5.1.6 For 220kV power distribution device in 220kV substation, when it is
important in the system and the number of outgoing circuits is 4 circuits or more,
it should use double busbar wiring.
5.1.7 For the 110kV and 66kV power distribution devices in 220kV substation,
when the number of outgoing circuits is less than 6,
5.2.5 The selection of the voltage-regulation method of the main transformer
shall be subject to technical and economic demonstration.
When the operating voltage of the substation's busbar does not meet the
voltage quality standard under various operating modes of the system,
meanwhile the addition of the reactive power compensation device is not
effective or uneconomical, it may select the on-load voltage-regulation
transformer. When selecting the rated tap and branch tap of the transformer, it
shall meet the needs of the long-term development trend of the system.
5.3 Electrical installation
5.8 Selection & laying of the cable
5.8.1 The design of cable selection and laying of substation shall comply with
the requirements of the current national standard "Code for design of cables of
electric engineering" GB 50217.
5.9 Auxiliary facilities
5.9.1 Substation should not be equipped with maintenance workshop for large
electrical device.
6 System and secondary electrical
6.1 Relaying protection and automatic device
6.1.1 Substation shall, according to the safe operation needs of the power
system, be equipped with the following protective device.
6.1.2 The design of substation's relay protection and safety automatic devices
shall comply with the requirements of current national standard "Technical code
for relaying protection and security automatic equipment" GB 14285.
6.2 Dispatch automation
6.2.3 The design of the electric energy metering system shall comply with the
provisions of the power industry standard "Technical code for designing of
electric energy metering system" DL/T 5202.
6.2.4 The safety protection design of the secondary system of the substation
shall comply with the provisions of the “Regulations on the safety protection of
secondary power systems” (Order No.5 of the State Electricity Regulatory
Commission).
6.3 Communication
6.3.1 The design of substation system communication and in-station
communication shall comply with the provisions of "Technical rule of
communication design for 220kV ~ 500kV substation" DL/T 5225.It shall also
be equipped with the following communication facilities as needed.
6.3.4 The design of the dispatching switch shall comply with the provisions of
"Design technical code of dispatching communication exchange network of
electric power system" DL/T 5157.
6.4.3 The design of the substation's metering and measuring device shall
comply with the requirements of the current national standard "Code for design
of electrical measuring device of power system" GB 50063 and the power
industry standard "Technical code for designing electrical measuring and
energy metering device" DL/T 5137.
6.5 DC power system and uninterruptible power supply (UPS)
6.5.1 The design of the substation's DC power system shall comply with the
requirements of the power industry standard "Technical code for designing DC
system of power projects" DL/T 5044.
6.7.2 The safety video monitoring system shall arrange camera monitoring
points according to the requirements of the attended substation and the
unattended substation.
6.7.3 It should set up an electronic fence around the fence, to realize the linkage
between video surveillance and security guard system.
7 Civil works
7.1 General requirement
7.1.5 The safety grade of the main structure of the substation of 500kV and
above (main control communication building, 500kV and 750kV power
distribution device structure, etc.) should adopt the grade-1; the rest structure
should adopt the grade-2.The structural importance factor γ0 of grade-1 and
grade-2 is 1.1 and 1.0, respectively.
7.2 Loads
7.2.1 Loads are divided into three types. permanent load, variable load,
accidental load.
7.2.3 The device support and its foundation shall be based on the following
three load conditions as the basic combination of the bearing capacity limit state,
wherein the quasi-permanent value under the maximum wind condition
(standard value multiplied by 0.5 quasi-permanent value factor) should be used
as the load conditions for the verification of deformation of normal use limit state.
7.2.4 Short-circuit electric power. For flexible conductors, it may not take into
account of the impact of short-circuit electric power on the structure and the
bracket. However, the strength of the line-hanging plate and node of the
combined conductor shall meet the requirements of short-circuit electric power.
Generally, it may take 3 times the tension of conductor as the verification
conditions for the line-hanging plate and node.
7.3.4 For the attended main control communication building (room), except for
the process room, it may also set up a duty lounge, office, meeting room, meal
preparation room, safety device room, etc. However, if it is unattended, the
above rooms shall be appropriately reduced or canceled. When the control
building is far from the main entrance, it may set up a guard room at the
entrance.
7.3.5 When the relay room is placed down, it should not set the cable layer.
8 Heating, ventilation and air conditioning
8.1 Heating
8.1.1 The heating design of the substation shall comply with the current national
standard “Code for design of heating ventilation and air conditioning” GB 50019.
8.2 Ventilation
8.2.1 The ventilation design of the substation shall comply with the current
national standard "Code for design of heating ventilation and air conditioning"
GB 50019.
8.2.2 The accidental air replacement of the power distribution device shall not
be less than 12 air changes per hour. The accident fan can also be functioned
as ventilation fan.
8.3 Air conditioning
8.3.1 The air conditioning design of the substation shall comply with the current
national standard "Code for design of heating ventilation and air conditioning"
GB 50019.
8.3.2 Air conditioning should be provided in the main control room, computer
room, relay chamber, communication room and other rooms where the process
device requires ventilation in the substation. The indoor temperature and
humidity of the air-conditioned room shall meet the process requirements.
9 Water supply and drainage
9.0.1 The design of water supply and drainage for substations shall comply with
the requirements of the current power industry standard “Design code of water
supply and drainage for substation” DL/T 5143.
9.0.4 The domestic sewage, production wastewater and rainwater in the
substation area should adopt the diversion system.
9.0.5 The domestic sewage and production wastewater of the substation shall
be treated to reach standard before discharge or recycling in the substation.
DL/T 5218-2012
POWER INDUSTRY STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 29.240
P 62
Registration number. J1459-2012
P DL/T 5218-2012
Replacing DL/T 5218-2005
Technical code for the design of
220kV ~ 750kV substation
Issued on. AUGUST 23, 2012
Implemented on. DECEMBER 01, 2012
Issued by. National Energy Administration
POWER INDUSTRY STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
Technical code for the design of
220kV ~ 750kV substation
Replacing DL/T 5218-2005
Main drafting organization. Electrical Planning and Design Institute
Approved by. National Energy Administration
Date of implementation. December 01, 2012
2012 Beijing
Table of Contents
Foreword... 7
1 General provisions... 9
2 Terms... 10
3 Selection of the substation location... 12
4 General plan & layout of the substation... 14
5 Primary electrical... 24
6 System and secondary electrical... 32
7 Civil works... 37
8 Heating, ventilation and air conditioning... 45
9 Water supply and drainage... 47
10 Fire protection... 48
11 Environmental protection... 50
12 Labor safety and occupational health... 53
13 Energy saving... 56
Explanations of wording in this standard... 59
List of quoted standards... 60
1 General provisions
1.0.1 In order to meet the needs of national and industry standardization
construction, reach a unified standard technical principle for design of
substation, allow the design of substation to meet the relevant national policies,
laws, regulations, reach the requirements of safety and reliability, advanced and
applicability, energy saving and environmentally friendly, it hereby develops this
standard.
1.0.2 This standard is applicable to the design of the newly built, reconstructed,
extended work of substation (switchyard) which has an AC voltage of 220kV ~
750kV.
1.0.3 Substation design shall be combined with engineering features, actively
and deliberately adopt new technologies, new device, new materials, new
processes with application conditions.
1.0.4 In addition to the implementation of this standard, the design of substation
shall also comply with the relevant national standards.
2 Terms
2.0.1
Substation
Part of the power system, which is concentrated in a defined location,
including terminals, switches and control device, buildings and transformers
for power transmission or distribution. It usually includes the facilities (such
as protective devices) required for the safety and control of power system.
2.0.2
Uninterruptible power supply
The power supply which consists of a battery pack, an inverter, other circuits,
that provides AC power when the power grid is out of power.
2.0.3
Substation automation system
A computer application system that implements functions such as
information collection, processing, monitoring, control, operation
management of substation based on computer, network, communication
technologies.
2.0.4
Unattended operation mode
An operation management mode, in which the operation monitoring of the
substation and the main control operation are carried out by the remote
control end, the device of the substation is regularly patrolled and maintained.
There are no on-duty personnel in the substation for fixed operation and
maintenance.
3 Selection of the substation location
3.0.1 The site selection of the substation shall be based on the network
structure, load distribution, urban-rural planning, land acquisition & demolition
and the following provisions of the power system planning and design. It shall
use technical and economic comparison and economic benefit analysis to
select the optimal solution of site location.
3.0.4 The selection of substation's location shall be based on transportation
conditions and substation's construction needs, facilitating the connection of
incoming roads and large-piece transportation.
3.0.5 The substation's location shall have suitable geological and topographical
conditions. It shall avoid unfavorable geological structures such as landslides,
debris flows, subsidence zones, earthquake-fracture zones. It should avoid
submerged caves, goafs, exposed and concealed river ponds, shore scouring
areas, areas prone to rolling stones, try to avoid or reduce damage to forests
and natural landscapes.
3.0.8 There shall be a reliable source of water for production and domestic use
near the substation's location. When groundwater is used as a water source, it
shall carry out hydrogeological surveys or explorations, submit report.
3.0.9 There shall be reliable power supply around the substation's location
which meet the requirements of substation construction and external power
supply for station service.
3.0.12 The seismic fortification intensity of the substation's location shall comply
with the current national standard "Seismic ground motion parameter zonation
map of China" GB 18306.
4 General plan & layout of the substation
4.1 Plan of the substation
4.1.1 The general plan of the substation shall be coordinated with the local
urban planning or industrial zone planning. It should make full use of the nearby
public facilities such as traffic, water supply and drainage, flood control.
4.1.3 For the substation in flood control and seismic fortification areas, it shall,
based on such factors as geology and topography, arrange the main production
constructions (structures) in relatively favorable areas.
4.1.4 The positioning of substation's location shall rationally use geological and
topographical conditions. For the high and steep slope, it shall analyze its
stability and the impact on the building and structures, take safety measures to
prevent human and animal from falling.
4.2 General layout
4.2.1 The combination of plane and space of substation buildings shall,
according to the process requirements, make full use of natural terrain, to
ensure that the layout is compact and reasonable and the expansion is
convenient.
4.2.5 The fire hazard category and minimum fire resistance rating of each
building and structure of the substation shall not be lower than those specified
in Table 4.2.5.The design of the entire building and structure and their
components shall comply with the relevant provisions on fire prevention in
addition to the use function.
4.2.6 The minimum spacing of the building and structure in the substation shall
not be less than that specified in Table 4.2.6.
4.3 Vertical arrangement
4.3.1 The vertical design of the substation shall be carried out simultaneously
with the general layout, meanwhile shall be coordinated with the elevations of
the existing and planned roads, drainage systems, surrounding sites outside
the substation.
4.5 Road
4.5.1 The path of the substation's access road shall be determined
comprehensively according to the current situation of the road around the site,
combined with the long-term development plan, the substation plan and vertical
layout design.
4.6 Site treatment
4.6.1 In the outdoor power distribution device area, it should set the operation
floor according to the process requirements.
4.6.2 The substation site may adopt such treatment measures as gravel, pebble
pavement or lime soil closure, or it may be properly greened.
4.7 Fence and gate
4.7.1 The fence of the substation area should be a solid wall which has a height
of 2.2m ~ 2.8m. Where there are noise control requirements, the height of fence
of substation may be determined as needed.
4.7.2 The gate of the substation should use lightweight iron doors or electric
retractable doors. Unattended substations should have physical gates.
5 Primary electrical
5.1 Electrical circuit connection
5.1.1 The electrical circuit connection of the substation shall be determined
according to the status of the substation in the power system, the planned
capacity of the substation, the nature of the load, the total number of
components as connected to the line and transformer, the characteristics of the
device, etc. It shall meet the requirements of reliable power supply, flexible
operation, convenient operation and maintenance, investment savings, ease of
transition or expansion.
5.1.6 For 220kV power distribution device in 220kV substation, when it is
important in the system and the number of outgoing circuits is 4 circuits or more,
it should use double busbar wiring.
5.1.7 For the 110kV and 66kV power distribution devices in 220kV substation,
when the number of outgoing circuits is less than 6,
5.2.5 The selection of the voltage-regulation method of the main transformer
shall be subject to technical and economic demonstration.
When the operating voltage of the substation's busbar does not meet the
voltage quality standard under various operating modes of the system,
meanwhile the addition of the reactive power compensation device is not
effective or uneconomical, it may select the on-load voltage-regulation
transformer. When selecting the rated tap and branch tap of the transformer, it
shall meet the needs of the long-term development trend of the system.
5.3 Electrical installation
5.8 Selection & laying of the cable
5.8.1 The design of cable selection and laying of substation shall comply with
the requirements of the current national standard "Code for design of cables of
electric engineering" GB 50217.
5.9 Auxiliary facilities
5.9.1 Substation should not be equipped with maintenance workshop for large
electrical device.
6 System and secondary electrical
6.1 Relaying protection and automatic device
6.1.1 Substation shall, according to the safe operation needs of the power
system, be equipped with the following protective device.
6.1.2 The design of substation's relay protection and safety automatic devices
shall comply with the requirements of current national standard "Technical code
for relaying protection and security automatic equipment" GB 14285.
6.2 Dispatch automation
6.2.3 The design of the electric energy metering system shall comply with the
provisions of the power industry standard "Technical code for designing of
electric energy metering system" DL/T 5202.
6.2.4 The safety protection design of the secondary system of the substation
shall comply with the provisions of the “Regulations on the safety protection of
secondary power systems” (Order No.5 of the State Electricity Regulatory
Commission).
6.3 Communication
6.3.1 The design of substation system communication and in-station
communication shall comply with the provisions of "Technical rule of
communication design for 220kV ~ 500kV substation" DL/T 5225.It shall also
be equipped with the following communication facilities as needed.
6.3.4 The design of the dispatching switch shall comply with the provisions of
"Design technical code of dispatching communication exchange network of
electric power system" DL/T 5157.
6.4.3 The design of the substation's metering and measuring device shall
comply with the requirements of the current national standard "Code for design
of electrical measuring device of power system" GB 50063 and the power
industry standard "Technical code for designing electrical measuring and
energy metering device" DL/T 5137.
6.5 DC power system and uninterruptible power supply (UPS)
6.5.1 The design of the substation's DC power system shall comply with the
requirements of the power industry standard "Technical code for designing DC
system of power projects" DL/T 5044.
6.7.2 The safety video monitoring system shall arrange camera monitoring
points according to the requirements of the attended substation and the
unattended substation.
6.7.3 It should set up an electronic fence around the fence, to realize the linkage
between video surveillance and security guard system.
7 Civil works
7.1 General requirement
7.1.5 The safety grade of the main structure of the substation of 500kV and
above (main control communication building, 500kV and 750kV power
distribution device structure, etc.) should adopt the grade-1; the rest structure
should adopt the grade-2.The structural importance factor γ0 of grade-1 and
grade-2 is 1.1 and 1.0, respectively.
7.2 Loads
7.2.1 Loads are divided into three types. permanent load, variable load,
accidental load.
7.2.3 The device support and its foundation shall be based on the following
three load conditions as the basic combination of the bearing capacity limit state,
wherein the quasi-permanent value under the maximum wind condition
(standard value multiplied by 0.5 quasi-permanent value factor) should be used
as the load conditions for the verification of deformation of normal use limit state.
7.2.4 Short-circuit electric power. For flexible conductors, it may not take into
account of the impact of short-circuit electric power on the structure and the
bracket. However, the strength of the line-hanging plate and node of the
combined conductor shall meet the requirements of short-circuit electric power.
Generally, it may take 3 times the tension of conductor as the verification
conditions for the line-hanging plate and node.
7.3.4 For the attended main control communication building (room), except for
the process room, it may also set up a duty lounge, office, meeting room, meal
preparation room, safety device room, etc. However, if it is unattended, the
above rooms shall be appropriately reduced or canceled. When the control
building is far from the main entrance, it may set up a guard room at the
entrance.
7.3.5 When the relay room is placed down, it should not set the cable layer.
8 Heating, ventilation and air conditioning
8.1 Heating
8.1.1 The heating design of the substation shall comply with the current national
standard “Code for design of heating ventilation and air conditioning” GB 50019.
8.2 Ventilation
8.2.1 The ventilation design of the substation shall comply with the current
national standard "Code for design of heating ventilation and air conditioning"
GB 50019.
8.2.2 The accidental air replacement of the power distribution device shall not
be less than 12 air changes per hour. The accident fan can also be functioned
as ventilation fan.
8.3 Air conditioning
8.3.1 The air conditioning design of the substation shall comply with the current
national standard ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9
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