|
US$349.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
DL/T 993-2019: General specification for power system out-of-step separation equipment
Status: Valid DL/T 993: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| DL/T 993-2019 | English | 349 |
Add to Cart
|
3 days [Need to translate]
|
General specification for power system out-of-step separation equipment
| Valid |
DL/T 993-2019
|
| DL/T 993-2006 | English | 519 |
Add to Cart
|
3 days [Need to translate]
|
General specification for power system out-of-step separation equipment
| Obsolete |
DL/T 993-2006
|
PDF similar to DL/T 993-2019
Basic data | Standard ID | DL/T 993-2019 (DL/T993-2019) | | Description (Translated English) | General specification for power system out-of-step separation equipment | | Sector / Industry | Electricity & Power Industry Standard (Recommended) | | Classification of Chinese Standard | K45 | | Word Count Estimation | 15,113 | | Date of Issue | 2019-06-04 | | Date of Implementation | 2019-10-01 | | Older Standard (superseded by this standard) | DL/T 993-2006 | | Regulation (derived from) | Natural Resources Department Announcement No. 7 of 2019 | | Issuing agency(ies) | National Energy Administration | DL/T 993-2019: General specification for power system out-of-step separation equipment---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
General specification for power system out-of-step separation equipment
ICS 29.240
K 45
People's Republic of China Electric Power Industry Standard
Replace DL/T 993-2006
General technical conditions of power system out-of-step splitting device
2019-06-04 released
2019-10-01 implementation
Issued by National Energy Administration
Table of contents
Foreword...II
1 Scope...1
2 Normative references...1
3 Terms and definitions...2
4 Technical requirements...2
5 Functions and technical requirements...4
6 Safety requirements...5
7 Inspection and test...5
8 Marking, packaging, transportation, storage...9
9 Other...10
Foreword
This standard is compiled in accordance with the rules given in GB/T 1.1-2009.
This standard replaces DL/T 993-2006 "General Technical Requirements for Out-of-Step Splitting Devices of Power Systems", except for editorial changes, and DL/T 993
Compared with.2006, the main technical changes are as follows.
--Updated normative references;
--Add terms and definitions to the standard (see 3);
-The terms of the original standard 3.1 have been modified (see 4.1);
- Increase the requirements for related equipment of smart substations (see 4.14);
- The clauses of 3.6 of the original standard have been modified (see 5.1);
- Clauses f) and g) are deleted from the original standard 3.7;
- Clauses d) and e) in the original standard 3.7 have been modified (see 5.2.7, 5.2.9);
- Four clauses have been added to the original standard 3.7 (see 5.2.2, 5.2.4, 5.2.10, 5.2.13).
This standard was proposed by the Standardization Center of the China Electricity Council.
This standard is under the jurisdiction of the Power Industry Relay Protection Standardization Technical Committee.
The main drafting organizations of this standard. Nanjing Nanrui Relay Electric Co., Ltd., State Grid Co., Ltd. Power Dispatching Control Center, South China
Fang Grid Co., Ltd. Power Dispatching Control Center, State Grid Co., Ltd. Northwest Branch, State Grid Co., Ltd. Central China Branch, State Grid Co., Ltd.
Power Dispatching Control Center of Hunan Electric Power Co., Ltd., China Southern Power Grid Research Institute Co., Ltd., Yunnan Power Dispatching Control Center
Xin, Southwest Electric Power Design Institute Co., Ltd., Guodian NARI Technology Co., Ltd. Power Grid Security and Stability Control Technology Branch, Guodian Nanjing
Donghua Co., Ltd., Beijing Sifang Relay Automation Co., Ltd., Shanghai Electric Power Design Institute Co., Ltd., etc.
The main drafters of this standard. Ren Zuyi, Zhou Jian, Yu Zhao, Bai Yang, Niu Shuanbao, Xu Yuxin, Xu Youping, Xi Hanjiang, He Qiang, Liu Yong
Jun, Wu Chen, Dong Xijian, Xia Shangxue, Xu Ke, Li Zhe, Wu Chong, Liu Hanwei, Shao Dejun, Tu Liang, Shi Bonian, Li Chaoqun.
The previous published versions of the standard replaced by this standard are.
--DL/T 993-2006
The opinions or suggestions during the implementation of this standard are fed back to the Standardization Management Center of China Electricity Council (Baiguang, Xicheng District, Beijing)
Lu Er Tiao No. 1, 100761).
General technical conditions of power system out-of-step splitting device
1 Scope
This standard specifies the technical requirements, test methods, inspection rules, and the requirements for marking, packaging, transportation, and storage of power system out-of-step splitting devices.
Requirements for deposits and so on.
This standard is applicable to the out-of-step splitting device of the power system (hereinafter referred to as the device) as the scientific research, design, manufacturing, test,
Basis for inspection and application.
2 Normative references
The references in the following documents are essential. For dated reference documents, only the dated version applies to this document. Anything not
For dated reference documents, the latest version (including all amendments) applies to this document.
GB/T 191 Packaging, storage and transportation pictorial signs
GB/T 2423.1 Environmental testing of electric and electronic products Part 2.Test method Test A. Low temperature
GB/T 2423.2 Environmental testing of electrical and electronic products Part 2.Test method Test B. High temperature
GB/T 2423.3 Environmental Test Part 2.Test Method Test Cab. Constant Damp Heat Test
GB/T 2423.4 Environmental testing of electrical and electronic products Part 2.Test method Test Db. Alternating damp heat (12h 12h cycle)
GB/T 2423.10 Environmental testing of electrical and electronic products Part 2.Test method Test Fc. Vibration (sinusoidal)
GB/T 2423.22 Environmental Test Part 2.Test Method Test N. Temperature Change
GB/T 2900.1 Basic terminology for electrical engineering
GB/T 2900.17 Electrical terminology measuring relay
GB/T 2900.49 Electrician Terminology Power System Protection
GB/T 4208 Enclosure protection grade (IP code)
GB/T 4798.2 Environmental conditions for application of electrical and electronic products Part 2.Transportation
GB/T 7261-2016 Basic test methods for relay protection and safety automatic devices
GB/T 9361-2011 Computer site safety requirements
GB/T 11287 Electrical Relay Part 21.Vibration, Shock, Impact and Seismic Test of Measuring Relay and Protection Device Part 1
Article. Vibration Test (Sine)
GB/T 13384-2008 General technical requirements for packaging of mechanical and electrical products
GB/T 14285-2006 Technical Regulations for Relay Protection and Safety Automatic Equipment
GB/T 14537 Impact and collision test for measuring relays and protection devices
GB/T 14598.3 Electrical Relay Part 5.Insulation coordination requirements and tests for measuring relays and protection devices
GB/T 14598.24-2017 Measuring relays and protection devices-Part 24.Power system transient data exchange (COMTRADE) general format
GB/T 14598.26-2015 Measuring Relays and Protection Devices Part 26.Electromagnetic Compatibility Requirements
GB/T 17626.8 Electromagnetic compatibility test and measurement technology Power frequency magnetic field immunity test
GB/T 17626.17 Electromagnetic compatibility test and measurement technology DC power input port ripple immunity test
GB/T 17626.29 Electromagnetic compatibility test and measurement technology DC power input port voltage sag, short-term interruption and voltage change resistance
Disturbance test
GB/T 19520.12-2009 Mechanical Structure of Electronic Equipment 482.6mm (19in) Series Mechanical Structure Dimensions Part 3-101.Sub-box and
Its plugin
GB/T 26399-2011 Power System Security and Stability Control Technology Guide
GB/T 26864-2011 Power System Relay Protection Product Dynamic Model Test
GB/T 32901-2016 General technical requirements for intelligent substation relay protection
DL/T 478-2013 General technical requirements for relay protection and safety automatic devices
DL/T 667-1999 Telecontrol Equipment and System Part 5.Transmission Protocol Part 103.Supporting Standards for Information Interface of Relay Protection Equipment
DL/T 860 (all parts) Substation communication network and system
3 Terms and definitions
GB/T 2900.1, GB/T 2900.17, GB/T 2900.49, GB/T 26399-2011, DL/T 478-2013 and the following
The terms and definitions apply to this document.
3.1
Out-of-step oscillation
If the power angle difference between the rotors of the two co-tuned generators with the same value at the center of inertia exceeds 180°, it is judged to be out of synchronization, and then the power angle
The difference will change periodically in the range of 0°～360°, and this process is called out-of-step oscillation.
3.2
Out-of-step separation equipment
After the out-of-step oscillation occurs in the power system, split the pre-selected transmission lines, generator sets and other components to eliminate the power system
Out-of-step oscillation state, a safety automatic device to prevent system breakdown.
4 Technical requirements
4.1 Environmental conditions
4.1.1 Normal working atmospheric conditions
The normal working atmospheric conditions are as follows.
a) Ambient temperature. -10℃～＋55℃;
b) Relative humidity. 5% to 95% (there is neither condensation nor freezing inside the device);
c) Atmospheric pressure. 80kPa～106kPa.
4.1.2 Reference test atmospheric conditions
The atmospheric conditions of the benchmark test are as follows.
a) Ambient temperature. +20℃±5℃;
b) Relative humidity. 45%～75%;
c) Atmospheric pressure. 86kPa～106kPa.
4.1.3 Ambient temperature for storage and transportation
The ambient temperature for storage and transportation is as follows.
a) The storage environment temperature is -25℃～＋55℃, and the relative humidity is not more than 85%;
b) The transportation environment temperature is -25℃～＋70℃, and the relative humidity is not more than 85%;
When the storage and transportation environmental conditions exceed the above range, it is determined by the user and the manufacturer.
4.1.4 Surrounding environment
The environmental conditions for installation and operation of the device are as follows.
a) It should be shaded, protected from rain and snow, protected from lightning, sand and dust, and ventilated;
b) No electromagnetic interference exceeding 7.4 specified in DL/T 478-2013 is not allowed;
c) The site should meet the requirements of Class B safety requirements in GB/T 9361-2011;
d) The place of use should not have vibrations that exceed the severity level specified by GB/T 11287 as Class I;
e) Non-explosive medium, the surrounding medium should not contain any medium that can corrode metal, destroy insulation, surface plating and coating.
Conductive medium, no obvious water vapor, no serious molds;
f) All reliable grounding points at the installation site shall comply with relevant standards.
4.1.5 Special conditions of use
When the normal working conditions specified in 4.1.1, 4.1.3, 4.1.4 are exceeded, it is determined by the user and the manufacturer.
When the ambient temperature of the installation site obviously exceeds 4.1.1 normal working environment conditions, the preferred ambient temperature range is specified as.
a) Especially cold areas. -25℃～＋55℃;
b) Especially hot areas. -10℃～+70℃.
4.2 Rated electrical parameters
4.2.1 DC power supply
a) DC rated voltage. 110V, 220V;
b) Allowable deviation. -20%～10%;
c) Ripple coefficient. not more than 5%.
4.2.2 AC circuit
The requirements for the AC circuit of the device are as follows.
a) Secondary rated value of AC voltage. 3/100 V; 100V;
b) Secondary rated value of AC current. 1A, 5A;
c) Rated frequency. 50Hz.
4.3 Power consumption
The power consumption requirements of the device are as follows.
a) AC current loop. when the rated current is 5A, each phase is not more than 1VA;
When the rated current is 1A, each phase is not more than 0.5VA.
b) AC voltage circuit. when it is rated voltage, each phase is not more than 1VA.
c) DC power circuit. when working normally, not more than 50W;
When the device is operating, it is not more than 80W.
4.4 Overload capacity
The requirements for the overload capacity of the device are as follows.
a) AC current loop. 2 times the rated current. long-term continuous work;
40 times the rated current. Allow 1s.
b) AC voltage circuit. 1.4 times rated voltage. long-term continuous work;
2 times the rated voltage. allow 10s.
4.5 Accuracy and variation of measuring components
The accuracy of the measuring elements of the device is specified as follows.
a) Voltage measurement allowable error. the voltage is within the range of 0.1Un～1.4 Un (Un is the rated voltage value), and the relative error is not more than 2.5%
Or the absolute error is not more than 0.02 Un.
b) Current measurement allowable error. the current is within the range of 0.1In～5In (In is the rated current value), and the relative error is not more than 2.5% or
The absolute error is not more than 0.02 In.
4.6 Structure and appearance
The size of the chassis and plug-in should meet the requirements of GB/T 19520.12-2009.
4.7 Shell protection
The enclosure protection of the device used indoors shall meet the requirements of enclosure protection level specified in 4.10.2 of DL/T 478-2013.
4.8 Requirements for connecting wires, output relays and signal relays
The requirements for the connecting wires, output relays and signal relays in the device shall comply with DL/T 478-2013 in 4.4, 4.5.3, 4.5.4
Provisions.
4.9 Insulation requirements
The insulation requirements of the device shall meet the requirements of 4.9 in DL/T 478-2013.
4.10 Moisture and heat resistance performance requirements
The damp and heat resistance of the device should meet the requirements in 7.3 of DL/T 478-2013.
4.11 EMC requirements
The anti-interference and electromagnetic emission performance of the device shall comply with the regulations in 4.8 of DL/T 478-2013.
4.12 Mechanical properties
The mechanical properties of the device should meet the requirements of 4.10 in DL/T 478-2013.
4.13 Continuous power-on
After the device has been debugged, it shall be subjected to a continuous power-on test in accordance with 4.11 of DL/T 478-2013.
4.14 Requirements for related equipment of smart substation
The requirements of the device for electronic transformers, merging units, smart terminals, time synchronization, and switches shall comply with GB/T 32901-2016
The provisions of 4.13.
5 Functions and technical requirements
5.1 General functions and technical requirements
5.1.1 The device should meet the requirements in 5.1 of GB/T 14285-2006.
5.1.2 The digital sampling or digital tripping device shall meet the requirements of 4.11.4～4.11.6, 4.11.17, GB/T 32901-2016
4.11.18 requirements.
5.1.3 The device should support operation functions such as on-site and remote throwing and retreating of the soft pressure plate, resetting the signal, and modifying the fixed value.
5.1.4 The device should record normal operation information in a chronological manner, such as binary input displacement, pressure plate switching, and setting
Value modification, etc.
5.1.5 Important record information such as device setting value, action information, alarm information, including action
It should be lost. After the power supply returns to normal, it should be able to display and output correctly again.
5.1.6 The device should support the uploading function of software version, fixed value, log, report and other information and recording files.
5.1.7 The device should be equipped with hardware and software lockout functions. Only when the power system is disturbed and the device meets the starting conditions, the unlocking is allowed.
In addition to lock-up.
5.1.8 The device should have hardware and software monitoring functions, and automatically monitor the hardware and software working status. After the device itself is abnormal or malfunctions
Measures such as alarming, self-resetting, and blocking important control loops shall be taken automatically, and abnormal fault information shall be recorded.
5.1.9 The switch input of the device shall meet the following conditions.
a) All DC power sources that enter the loop in the device should be isolated from the internal power supply of the device;
b) The starting voltage value of the heavy current switch-in circuit should not be greater than 0.7 times the DC rated voltage value and not less than 0.55 times the DC rated voltage value.
5.1.10 The fault recording function of the device shall meet the following conditions.
a) The device should be able to record important information during the entire operation, and retain more than 16 operation reports and wave recording information;
b) All recorded data should be converted, output or uploaded in accordance with the requirements of GB/T 14598.24-2017;
c) The recorded information should be able to be displayed, read or printed;
d) The record content should include input analog quantity and switch quantity, output switch quantity, action element, action time, fixed value, pressure plate and fault
Recording waves and so on.
5.1.11 The device should be equipped with a communication interface to meet the communication requirements of the automation system, and the communication transmission protocol should comply with DL/T 667 or DL/T
The relevant provisions of the 860 series of standards.
5.1.12 The device clock and time synchronization function shall meet the following conditions.
a) The device should be equipped with a hardware clock circuit. When the device loses DC power, the hardware clock should work normally.
b) The device should have a time synchronization interface with an external standard timing source.
c) The logic function of the device itself does not rely on an external clock.
5.1.13 Necessary auxiliary software shall be provided, such as communication and maintenance software, fixed value setting auxiliary software, fault record analysis software, debugging auxiliary software
Help software.
5.2 Device functions and technical requirements
5.2.1 The device should be able to correctly determine the out-of-step oscillation with an oscillation period of not less than 160ms and act correctly.
5.2.2 The device should be able to reliably identify the out-of-step oscillation of the system within one cycle of out-of-step oscillation, and act after confirming the out-of-step oscillation of the system.
5.2.3 The device should not malfunction in the case of various short-circuit faults, conversion faults, large power fluctuations, non-out-of-step oscillations, etc.
Made.
5.2.4 The criterion for device out-of-synchronization and unloading shall be able to be reliably judged when the power grid operation mode changes.
5.2.5 The device should not malfunction when the system is in non-full-phase operation; when out-of-step oscillation occurs when the system is in non-full-phase operation, the device should not be
Action. After the non-full phase is eliminated, the system is still in the out-of-step oscillation state, and the device should operate correctly.
5.2.6 The device should not malfunction when the PT or CT is disconnected.
5.2.7 The device should have the function of discriminating the action area. The device identifies the distance and direction of the oscillation center by setting the action area, and determines the installation
Set the range of motion to realize the coordination with other cross-section devices and prevent multiple cross-sections from being unloaded at the same time.
5.2.8 When the out-of-step oscillation center is near the installation point of the device, the device should be able to operate reliably.
5.2.9 The device should have the function of discriminating the number of oscillation cycles. By comparing the number of oscillation cycles with the setting value, it can be compared with other sections.
The device cooperates.
5.2.10 The device should have a communication interface and related function expansion capabilities to realize the complex out-of-synchronization function of the power grid based on regional information.
5.2.11 The device should not open the circuit breaker when the power angle difference on both sides of the system is around 180°.
5.2.12 When the system allows resynchronization control, the device should have the function of grading the output according to the number of out-of-step oscillation cycles.
5.2.13 The device should have independence and integrity. The out-of-synchronization function should not be integrated in other safety automatic devices.
6 Safety requirements
The safety performance of the device should meet the requirements of Chapter 6 of DL/T 478-2013.
7 Inspection and testing
7.1 Overview
7.1.1 Unless otherwise specified, all tests shall be carried out under the atmospheric conditions of the reference test specified in 4.1.2.
7.1.2 The device under test and the test instrument must be well grounded.
7.1.3 The surrounding environment should meet the requirements of 4.1.4.
7.1.4 The inspection of the device can generally be divided into two types. factory inspection and type test.
7.2 Factory inspection and type test
7.2.1 Factory inspection
Each device should be inspected by the manufacturer's quality inspection department before leaving the factory. Qualified products
There should be a product qualification certificate certifying that the device is qualified. The factory inspection items are listed in Table 1.
7.2.2 Type test
a) Type test should be carried out in any of the following situations.
1) Before new product development or finalization;
2) After the product is officially put into production, if there are major changes in the design (including software), process materials, components, etc., the evaluation will affect the device
Performance or safety.
b) When conducting a type test on a product in a series of products, full consideration should be given to covering the entire product series, and risk assessment documents should be provided,
Determine which type tests are effective for the entire series of products, and which type tests are needed for the remaining products in the series.
c) If the device has passed the type test, and the design, components, process materials or software have not been changed, the type test should not be repeated. Such as
If there are changes, a risk assessment should be conducted, and a document to determine which type test items are still valid and which type test items must be redone
Pieces. Type test items are listed in Table 1.
7.2.3 Inspection and test procedures
a) It should be ensured that the device conforms to its specifications, and its function can function correctly at the beginning of the test and the initial test stage.
Each stage maintains the specified characteristics of the device. During the inspection, the initial and final inspections shall be carried out through intuitive performance tests.
b) In the inspection and test procedure, if the final measurement of the previous inspection item corresponds to the initial measurement of the next inspection item, then
There is no need to make two measurements.
7.2.4 Qualified judgment
a) During the test, if no samples with major defects are found, the batch of products or test products shall be deemed qualified.
b) The main defect of the device refers to the performance or function that does not comply with GB/T 14285-2006, DL/T 478-2013, GB/T 26399-2011
In accordance with the requirements of this standard, it is necessary to replace important components before it can be eliminated, or there are generally irreparable defects (vulnerable elements).
Except for parts), the remaining defects are regarded as general defects.
c) During various tests and inspections, the number of general defects should not exceed 20% of the number of inspections, otherwise the statistics are based on the existence of major defects.
d) For safety type testing, the acceptable criterion is. zero defects are qualified, and general defects are unqualified.
7.3 Climate environment test
The climatic environment test shall be carried out in accordance with the provisions of 7.3 of DL/T 478-2013, and the device shall be able to withstand the climatic environment specified in 4.1 and 4.10 regulations.
The performance and function should meet the requirements of Chapter 5.
7.4 Electromagnetic compatibility test
7.4.1 Device port
The specific interface between the device and the external electromagnetic environment is called a port. It includes power port, input port, output port, communication port, external
Shell port and functional ground port, see Figure 1.
Figure 1 Schematic diagram of the ports of the tested device
All devices shall undergo various electromagnetic compatibility tests according to the ports (ports specified by the manufacturer).
7.4.2 Electromagnetic emission test
According to the regulations and methods in 7.4 of DL/T 478-2013, the electromagnetic emission test of the device shall meet the requirements of 4.11.
7.4.3 Immunity test
According to the provisions and methods in 7.4 of DL/T 478-2013, the electromagnetic immunity test of the device shall meet the requirements of 4.11.
7.5 DC power port voltage drop, short-term interruption, transient and ripple test
In accordance with DL/T 478-2013, 7.5 requirements, test the auxiliary power port voltage drop, short-term interruption, transient and ripple
And qualified judgment.
7.6 Mechanical test
7.6.1 Vibration response and durability (sinusoidal)
According to the requirements of 4.12, in accordance with the test methods and qualification criteria specified in Table 22 of DL/T 478-2013, the vibration response and resistance
Long-term testing and qualification determination.
7.6.2 Impact response, impact resistance and collision
According to the requirements of 4.12, in accordance with the test...
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of DL/T 993-2019_English be delivered?Answer: Upon your order, we will start to translate DL/T 993-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of DL/T 993-2019_English with my colleagues?Answer: Yes. The purchased PDF of DL/T 993-2019_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. Question 5: Should I purchase the latest version DL/T 993-2019?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version DL/T 993-2019 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.
|