ICS 27.100
K 54
Record No. J926—2009
Electric Power Industry Standard of the People's Republic of China
P DL / T 5428 — 2009
Technical Code for Design of I&C
Protection System in Fossil Fuel
Power Plant
Issue Date: July 22, 2009 implementation Date: December 1, 2009
Issued by the National Energy Administration of the People's Republic of China
1 Scope
This code specifies the design principles and design methods that shall be followed in power supply, logic and protection system configuration as well as equipment part of protection system in fossil fuel power plant.
This code is applicable to the design of new construction, expansion and betterment projects for condensing fossil fuel power plants with steam turbine generator unit rated 125MW- 1000MW, as well as the design of thermal power plants with capacity of 50MW and above.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this code. For dated references, subsequent amendments (excluding the contents of errata) to, or revision of, any of these publications do not apply.
However, parties to agreements based on this code are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 5578—2007 Fixed Power Plant Turbine Specifications
GB/T 13399—1992 Specification for S team Turbine Safety Monitoring Devices
GB/T 13983—1992 Instruments—Vocabulary—Basic Terms
GB/T 17626.2—2006 Electromagnetic Compatibility—Testing and Measurement Techniques—Electrostatic Discharge Immunity Test
GB/T 17626.3—2006 Electromagnetic Compatibility—Testing and Measurement Techniques—Radiated Radio-Frequency Electromagnetic Field Immunity Test
GB/T 17626.4—2008 Electromagnetic Compatibility—Testing and Measurement Techniques—Electrical Fast Transient/Burst Immunity Test
GB/T 17626.5—2008 Electromagnetic Compatibility—Testing and Measurement Techniques—Surge Immunity Test
GB/T 17626.6—2008 Electromagnetic Compatibility—Testing and Measurement Techniques—Immunity to Conducted Disturbances Induced by Radio-Frequency Fields
GB/T 17626.8—2006 Electromagnetic Compatibility—Testing and Measurement Techniques—Power Frequency Magnetic Field Immunity Test
GB/T 17626.9—1998 Electromagnetic Compatibility—Testing and Measurement Techniques—Pulse Magnetic Field Immunity Test
GB/T 17626.10—1998 Electromagnetic Compatibility—Testing and Measurement Techniques—Damped Oscillatory Magnetic Field Immunity Test
GB/T 17626.11—2008 Electromagnetic Compatibility—Testing and Measurement Techniques—Voltage Dips, Short Interruptions and Voltage Variations Immunity Tests
GB/T 17626.12—1998 Electromagnetic Compatibility—Testing and Measurement Techniques—Oscillatory Waves Immunity Test
GB/T 20438.1—2006 Functional Safety of Electrical/Electronic/ Programmable Electronic Safety-related Systems—Part 1: General Requirements
GB/T 20438.2—2006 Functional Safety of Electrical/Electronic/ Programmable Electronic Safety-related Systems—Part 2: Requirements for Electrical/Electronic/Programmable Electronic Safety-related Systems
GB/T 20438.3—2006 Functional Safety of Electrical/Electronic/
Programmable Electronic Safety-related System s—Part 3: So ftware Requirements
GB/T 21109.1—2007 Functional Safety—Safety Instrumented Systems for the Process Industry Sector—Part 1: Framework Definitions System Hardware and Software Requirements
GB 50217—2007 Code f or Design o f Cables of Electric Engineering
GB 50229—2006 Code for Design of Fire Protection for Fossil
DL / T 5428 — 2009 Fuel Power Plants and Substations
DL/T 435—2004 Code for the Prevention of Pulverized Coal Firing Furnace Explosions/Implosions in Power Plant Boilers
DL/T 589—1996 Directives of Thermal Instrumentation and Control for Coal Fired Boiler in Power Plant
DL/T 590—1996 Directives of Thermal Instrumentation and Control for Condensation Type Turbine in Power Plant
DL/T 591—1996 Directives of Thermal Instrumentation and Control for Turbo-Generator in Power Plant
DL/T 592—1996 Directives of Thermal Instrumentation and Control for Boiler Feedwater Pump in Power Plant
DL/T 641—2005 Electric Valve Actuators for Power Plant
DL/T 701—1999 Thermopower Au tomation-Vocabulary for Fossil Fired Power Plant
DL/T 711—1999 Test Guide of Steam Turbine Governing System
DL/T 834—2003 Guide for the Prevention of Water and Cool Steam Damage to Steam Turbines in Fossil Power Plant
DL/T 892—2004 Specification o f Steam Turbine for Pow er Plant
DL 5000—2000 Technical Co def or Designing Fossil Fuel Power Plant
DL/T 5182—2004 Technical Rule for Designing of Lo cal Equipment Installation, Pipeline and Cables of I&C in Power Plant
SD 268—1988 Specification for Power Station Coal Fired Boiler
NFPA 85—2004 Boiler and Combustion Systems Hazards Code
ASME TDP-1 — 1998 Recommended Practices for the Prevention of Water Damage to S team T urbines Used for Electric Power Generation
3 Terms and Definitions, Abbreviations
In addition to the terms and definitions specified in GB/T 13983 and DL/T 701, the following terms and definitions, as well as abbreviations are applicable to this code.
3.1 Terms and Definitions
3.1.1
One out of two for binary variable
Logic consisting of two binary variables reflecting the same event. When any variable is "true", the logic output is "true".
3.1.2
Two out of three for binary variable
Logic consisting of three binary variables reflecting the same event. When any two variables are "true", the logic output is "true".
3.1.3
Dual redundancy for analog variable
One variable is measured simultaneously by two analog variable transmitters or sensors for mutual standby.
3.1.4
Triple redundancy for analog variable
One variable is measured simultaneously by three analog variable transmitters or sensors for mutual standby.
3.1.5
Multiple redundancy for analog variable
One variable is measured simultaneously by more than three analog variable transmitters or sensors, for mutual standby.
3.1.6
Programmable electronic
Based on computer technology, programmable electronic can be composed of hardware, software, and their input and (or) output units.
3.1.7
Logic system
The part used to perform the decision and transition for functional logic in this system. A logic system provides output in particular sequence to respond to external input and internal logic. Logic system includes:
1 Hardwired system: devices and their interconnecting wiring.
2 The system based on microprocessor.
1) Computer hardware, power supply, I/O device and their interconnecting parts.
2) Operating system and logic software.
3.1.8
Programmable electronic logic system
Logic system based on one or more programmable electronic devices, used for control, protection or monitoring, which includes all elements in the system, such as power supply, input device, data highway, other communication channels, and output device, etc.. For example: PLC, DCS, etc..
3.1.9
Safety function
The function realized by safety-related programmable electronic system, other technical safety-related systems or external risk reduction facilities in respect of certain hazardous events, in order to achieve or maintain the safety state of controlled equipment.
3.1.10
Safety-related system
The specified system must be capable of realizing the required safety function to achieve or maintain the safety state of equipment controlled; the system alone or together with other safety-related programmable electronic systems, other technical systems or external risk reduction facilities can achieve the safety integrity required by the necessary safety function.
3.1.11
Safety integrity
The probability that safety-related system successfully achieves the safety function required under conditions specified and within the time specified.
3.1.12
Safety integrity level; SIL
A discrete level (one of the four possible levels), used to specify the safety integrity requirements of safety function assigned to safety-related programmable electronic system. SIL 4 herein is the highest, and SIL 1 is the lowest. See Table 3.1.12.
ICS 29.060.20
K 13
Record No. J806—2008
Electric Power Industry Professional Standard of the People's Republic of China
P DL / T 5405 — 2008
Code for Content Depth on
Preliminary Design of
Urban Power Cables
Issue Date: June 4, 2008 implementation Date: November 1, 2008
Issued by the National Development and Reform Commission of the People's Republic of China
1 Scope
This code specifies the content depth requirements of preliminary design of urban power cables.
This code is applicable to the preliminary design of newly built 35 kV-220 kV urban power cables. For newly built power cables rated below 35 kV or retrofitted cables rated 35 kV-220 kV, the code may be used for reference.
2 Normative References
The following normative documents contain provisions which,through reference in this text, constitute provisions of this code. For dated references, subsequent amendments (excluding the contents of errata) to, or revision of, any of these publications do not apply.
However, parties to agreements based on this code are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB 50217 Code for Design of Cables of Electric Engineering
DL/T 5221 Technical Rule for Design of Urban Power Cables
3 Terms and Definitions
The following terms and definitions apply to this code.
3.0.1
Cable corridor
The collective term for direct burying, ducts, cable troughs, and cable tunnels.
ICS 27.100
F 20
Record No. J724—2007
Electric Power Industry Standard of the People's Republic of China
P DL / T 5394 — 2007
Guideline for Anti-corrosion of
Underground Steel Structure in
Power Project
Issue Date: July 20, 2007 implementation Date: December 1, 2007
Issued by the National Development and Reform Commission of the People's Republic of China
1 Scope
This guideline specifies the technical requirements for the anti-corrosion of underground steel structures in power projects.
This guideline is applicable to design, construction, acceptance and management of anti-corrosion works of buried steel pipes and earthing grid in power plants and AC substations. It can also be used as a reference standard for anti-corrosion of other underground steel structures.
2 Normative References
The following documents contain provisions which through reference in this text, constitute provisions of this guideline and the version thereof in force at the time of publication of this guideline shall be deemed effective. All the standards indicated below are subject to revision and parties using these guidelines are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
GBZ1 Hygienic Standards for the Design of Industrial Enterprises
GBJ87 Specifications for Design of Noise Control System in Industrial Enterprises
GB/T 4950 Sacrificial Anode of Zn-Al-Cd Alloy
GB 6514 Safety Code for Painting—Safety, Ventilation and Air Clean-up for Painting Process
GB/T 7388 Technical Requirements for Marine Auxiliary Anode
GB/T 8923 Rust Grades and Preparation Grades of Steel Surfaces before Application of Paints and Related Products
GB/T 17731 Magnesium Alloy Sacrificial Anode
SY/T 0017 Standard of DC Drainage Protection for Buried Steel Pipelines
SY/T 0019 Design Specification of Sacrificial Anode for Buried Steel Pipeline
SY/T 0023 Test Method for Cathodic Protection Parameters of Buried Steel Pipelines
SY/T 0032 Standard for AC Influence Drainage Protection of Buried Steel Pipeline
SY/T 0036 Design Specification of Impressed Current Cathodic Protection for Buried Steel Pipeline
SY/T 0063 Standard Test Methods for Holiday Detection in Pipeline Coatings
SY/T 0086 Electricity Insulation Standard for Cathode Protection Pipeline
SY/T 0096 Technical Specification of Impressed Current Deep Groundbeds
SY/T 0315 Technological Standard of External Fusion Bonded Epoxy Coating for Steel Pipeline
SY/T 0413 Technical Standard of Polyethylene Coating for Buried Steel Pipeline
SY/T 0414 Technical Standard of Polyethylene Tape Coating for Steel Pipeline
SY/T 0447 Standard of Coal Tar Epoxy Coating for Buried Steel Pipeline
SY/T 0516 Technical Code for Insulating Flange Design
SY/T 6151 Assessment of Corroded Steel Pipelines
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.0.1
Corrosion
A physical-chemical interaction between metals and ambient medium, resulting in the change of the property of metals, and damages to metals, environment or the function of technical systems consisting of metals and ambient medium.
3.0.2
Corrosion rate
Mass loss of metals caused by corrosion within a unit period of time, usually expressed in mm/a or g/(m2·h).
3.0.3
Corrosion potential
Potential of a metal being an electrode in a special field corrosion
system.
3.0.4
Self-corrosion potential
Potential of a metal being an electrode without net current flows into and out of its surface.
3.0.5
Coating
Layers of insulation material applied on the surfaces of steel structures and the accessories thereof to separate them from the corrosive environment physically.
3.0.6
Holiday
Physical discontinuity point of the coating.
3.0.7
Cathodic protection
An electrochemical protection method whereby the corrosion potential is reduced in order to decrease the corrosion rate of the protected object obviously.
3.0.8
Sacrificial anode
A metal component which constitutes an anode with lower potential when it is coupled with a protected object being the cathode to form an electrochemical cell and this anode will dissolve to discharge negative current to protect the cathode.
3.0.9
Cathodic protection with sacrifice
An electromechanical protection method whereby a metal component being the sacrificial anode is coupled with a protected object being the cathode and protect the cathode by supplying negative current to it.
3.0.10
Impressed current cathodic protection
An electromechanical protection method whereby an external power supply is employed to supply negative current to a protected object being the cathode thereby protects it.
ICS 29.240.30
F 21
Record No. J522—2006
Electric Power Industry Standard of the People's Republic of China
P DL / T 5340 — 2006
Technical Code for Designing of
Telecommunication Lines Against
Danger Effects from DC Power
Transmission Lines
Design of Fossil Fuel Power Plant
Issue Date: May 6, 2006 implementation Date: October 1, 2006
Issued by the National Development and Reform Commission of the People's Republic of China
1 Scope
This code specifies the permissible value of danger effects on telecommunication lines from DC transmission lines, presents the calculation methods of danger effects, and provides necessary parameters and protective measures.
This code applies to the design of the protections that protect telecommunication lines from danger effects caused by the adjacent DC transmission lines.
In addition to this code, the design of the protections that protect telecommunication lines from danger effects caused by the adjacent DC transmission lines shall comply with the provisions of the national standards currently in force as well.
2 Terms and Definitions
The following terms and definitions apply to this code.
2.0.1
Telecommunication lines
Communication lines in forms of overhead open wire, overhead or buried cable, overhead or buried telecommunication optical fiber cable, and railway signal electrical line, cable television (signal, feed and subscriber) line, and remote control and signaling line.
2.0.2
Railway signal electrical lines
Cables and overhead open wires that transmit information for railway signal system, such as relay semi-automatic or automatic obturate way circuit, remote control line, remote signaling line, and railway circuit within the automatic obturate section.
2.0.3
Danger effects
The induced voltage and current on telecommunication lines caused by DC transmission lines can possibly endanger the safety of telecommunication operation and maintenance personnel, damage telecommunication lines or equipment, cause fire to buildings and structures, or cause wrong operation of railway signaling equipment which will bring hazards to traffic safety.
2.0.4
Adjacency
The relative position of telecommunication lines to DC transmission lines when the electromagnetic effects of DC transmission lines may cause danger to the telecommunication lines.
Parallel adjacency describes a situation in which the variation of distance between two adjacent lines does not exceed 5% of the arithmetic mean of the distance. Oblique adjacency describes a situation in which the variation of distance between two adjacent lines exceeds 5% and increases or decreases linearly (both DC transmission lines and telecommunication lines having no turning points).
2.0.5
Adjacent distance
The distance obtained by perpendicularly drawing a line from any point on the center line of the telecommunication line to that of the DC transmission line.
2.0.6
Length of adjacent sect
The projected length of the adjacent section of the telecommunication lines on the DC transmission lines.
2.0.7
Cross-over
The situation in which DC transmission lines pass through telecommunication lines from overhead.
2.0.8
Inductive coupling effect
Effects of current in DC transmission lines or from the ground on telecommunication lines through inductive coupling.
2.0.9
Capacitive coupling effect
Effects of voltage of DC transmission lines on telecommunication lines through capacitive coupling.
2.0.10
Resistive coupling effect
Effects on the grounding systems and the burial cables of telecommunication offices (stations) caused by ground resistive coupling when the short-circuit current flowing through the grounding system of DC power transmission line towers results in a potential difference between the direct grounding area and the remote ground area.
2.0.11
Magnetic induction endlong electromotance
Potential difference between any two points on a telecommunication line caused by the current in DC transmission line and the ground.
2.0.12
Magnetic induction ground voltage
The ground potential induced at any point on a telecommunication line by the current in the DC transmission line and the ground.
2.0.13
Railway circuit
A circuit in which the tracks of railway are used as conductors to check if there are trains on the railway, transmit the information about the presence of trains and form a communication circuit between the ground and the train.
2.0.14
Automatic obturate way circuit
A circuit used to determine the traveling directions of trains when they are traveling bi-directionally on the same railway within the automatic obturate section (normally in the same route of the communication lines of railways).
2.0.15
Broadcasting signal lines
Signal transmission lines of the wired broadcasting signal transmission system.
2.0.16
Broadcasting feedback lines
Feedback transmission lines of the wired broadcasting power transmission system.
2.0.17
Broadcasting user's lines
The transmission lines correspond the output end of transformers to the input end of user's equipment used in the wired broadcasting power transmission system.
ICS 27.100
F 20
Record No. J1045—2010
Electric Power Industry Standard of the People's Republic of China
P DL / T 5252 — 2010
Meteorological Testing
Specification for Environment
Impact Assessment of Thermal
Power Plants
Design of Fossil Fuel Power Plant
Issue Date: May 24, 2010 implementation Date: October 1, 2010
Issued by the National Energy Administration
1 Scope
This specification defines the fundamental requirements on meteorological testing activities in environmental impact assessment for construction projects of thermal power plants.
This specification is applicable to the meteorological testing activities in environmental impact assessment for construction projects of thermal power plants. It may also be taken as a reference for waste fired power stations and biomass power generation projects.
2 Normative Reference
The following normative documents contain provisions which, through reference in this text, constitute the provisions of this specification. For dated references, subsequent amendments (excluding the contents of errata) to or revision of any of these publications do not apply.
However, parties to agreements based on this specification are encouraged to investigate the possibility of applying the latest editions of the normative documents indicated below. For undated references, the latest editions thereof applies.
GB/T 3840 Technical Methods for Making Local Emission
Standards of Air Pollutants
GB 13223 Emission Standard of Air Pollutants for Thermal
Power Plants
HJ 2.2 Guidelines for Environmental Impact AssessmentAtmospheric Environment
3 Terms and Definitions
The following terms and definitions apply to this specification.
3.0.1
Assessment area
Abbreviated from environmental impact assessment area.
Different pollution sources result in different impact areas for different environmental elements. The assessment area described herein refers to the atmospheric environmental impact assessment area.
3.0.2
Cavitation at leeward slope
When an air flow passes obstacles, such as mountains, buildings,the counterflow area formed within a certain distance range of such obstacles at the leeward side.
3.0.3
Mountain valley breeze
It results from thermodynamic difference between a mountain valley and the surrounding air. In the daytime, wind blows from the valley to slope of a mountain (referred to as valley breeze); and at night, wind blows from the slope to valley of a mountain (referred to as mountain breeze). Valley breeze and mountain breeze are collectively called as the mountain valley breeze.
3.0.4
Sea breeze and land breeze
A wind characterized by diurnal variation which is formed near coasts due to uneven temperature between the land and the sea.
Where the basic air flow is weak, wind blows from the sea to the land in the daytime (referred to as sea breeze), and blows from the land to the sea at night (referred to as land breeze), and the both of them are collectively called as sea breeze and land breeze.
3.0.5
Atmospheric boundary layer
The lowest layer of aerosphere, also known as the"planetary boundary layer". In this layer, strong exchanges of various properties between the atmosphere and the ground occur due to thermal and dynamic effects from the ground, and as a result, the atmospheric motions present substantially irregular turbulent state.
3.0.6
Internal boundary layer
A new boundary layer occurring in the original boundary layer when air flow transits from one underlying surface to another underlying surface with different thermal and dynamic properties,also known as secondary boundary layer.
3.0.7
Urban heat island circulation
A kind of local wind caused by the temperature difference between urban area and the surrounding suburban or rural areas.
3.0.8
Temperature inversion
The phenomena that the atmospheric temperature rises with the increase in height above the ground.
请问这个厕所里的图例是什么？风口吗？
