HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189760 (18 Oct 2025)

DL/T 2018-2019 English PDF

US$329.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
DL/T 2018-2019: Specifications for generator-motor and transformer relay protection equipment of pumped storage power plant
Status: Valid
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
DL/T 2018-2019English329 Add to Cart 3 days [Need to translate] Specifications for generator-motor and transformer relay protection equipment of pumped storage power plant Valid DL/T 2018-2019

PDF similar to DL/T 2018-2019


Standard similar to DL/T 2018-2019

NB 35047   SL 314   SL 282   DL/T 5113.10   DL/T 2021   DL/T 2019   

Basic data

Standard ID DL/T 2018-2019 (DL/T2018-2019)
Description (Translated English) Specifications for generator-motor and transformer relay protection equipment of pumped storage power plant
Sector / Industry Electricity & Power Industry Standard (Recommended)
Classification of Chinese Standard P59
Classification of International Standard 27.140
Word Count Estimation 14,192
Date of Issue 2019-06-04
Date of Implementation 2019-10-01
Quoted Standard GB/T 2900.1; GB/T 2900.17; GB/T 2900.49; GB/T 32898; GB/T 36550; GB/T 14598.24; DL/T 478
Issuing agency(ies) National Energy Administration
Summary This standard specifies the basic technology, function, safety and other requirements for the generator motor, main transformer and excitation transformer relay protection device of pumped storage power station, as well as test methods and inspection rules. This standard is applicable to the relay protection device of the fixed-speed pumped-storage generator-motor-transformer unit with a single unit capacity of 150MW and above.

DL/T 2018-2019: Specifications for generator-motor and transformer relay protection equipment of pumped storage power plant


---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.
Specifications for generator-motor and transformer relay protection equipment of pumped storage power plant ICS 27.140 P 59 Record number. 63143-2018 People's Republic of China Electric Power Industry Standard Pumped storage generator motor transformer group Technical conditions of relay protection 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...1 4 Basic requirements...1 4.1 Environmental conditions...1 4.2 Rated electrical parameters...2 4.3 General requirements...2 5 Functional requirements...3 5.1 Generator motor protection...3 5.2 Main transformer and excitation transformer...9 6 Inspection and test...11 7 Marking, packaging, transportation, storage and documents...11

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009 "Guidelines for Standardization Work Part 1.Standard Structure and Compilation". Please note that certain contents of this standard may involve patents. The issuing organization of this standard does not bear the responsibility for identifying these patents. This standard was proposed and managed by the China Electricity Council. Drafting organizations of this standard. State Grid Xinyuan Holdings Co., Ltd., Nanjing Nanrui Relay Electric Co., Ltd., East China Tongbai Pumped Storage Power Generation Company Limited Liability Company, Anhui Xiangshuijian Pumped Storage Co., Ltd., East China Tianhuangping Pumped Storage Co., Ltd., State Grid Xinyuan Holdings Co., Ltd. Company Zhejiang Qujiang Pumped Storage Branch Company, Henan Tianchi Pumped Storage Co., Ltd., China Southern Power Grid Co., Ltd. Peak and Frequency Modulation Power Generation Company Division, State Grid Xinyuan Holdings Co., Ltd. Technology Center. The main drafters of this standard. Le Zhenchun, Li Jianguang, Zhang Quansheng, Zhang Zhengping, Wang Guang, Chen Jun, Wang Kai, Luo Yin, Jiang Tao, Wei Wei, Ye Weimin, Chen Lingfeng, Ding Yenan, Hao Guowen, Liu Feng, Gong Kui, Zeng Guangyi, Li Dehua, He Rufei, Li Jingyan, Liu Ren, Fu Jiahui, Lu Zhijuan, Zhu Jia. This standard is issued for the first time. The opinions or suggestions during the implementation of this standard are fed back to the Standardization Management Center of China Electricity Council (No. 2 Baiguang Road, Beijing) One, 100761). Technical requirements for relay protection device of pumped storage generator motor transformer group

1 Scope

This standard specifies the basic technology, functions, and functions of the generator motors, main transformers, and excitation transformer relay protection devices for pumped storage power stations. Safety and other requirements, as well as test methods and inspection rules. This standard is applicable to relay protection devices of fixed-speed pumped-storage generator motor transformer units with a single unit capacity of 150MW and above.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 2900.1 Basic terminology for electrical engineering GB/T 2900.17 Electrical terminology measuring relay GB/T 2900.49 Electrical terminology electrical system protection GB/T 14598.24 Measuring relays and protection devices-Part 24.Power system transient data exchange (comtrade) general format GB/T 36550 Basic Terminology for Pumped Storage Power Station GB/T 32898 Pumped-storage generator motor transformer group relay protection configuration guide DL/T 478 General technical requirements for relay protection and safety automatic devices

3 Terms and definitions

Terms and definitions defined in GB/T 2900.1, GB/T 2900.17, GB/T 2900.49, GB/T 36550, GB/T 32898, DL/T 478 The meaning applies to this document. The following symbols apply to this document. nI. The secondary rated current of the current transformer (TA). NU. The rated voltage of the primary side of the generator motor. nU. secondary rated line voltage of voltage transformer (TV). nP. Rated power of generator motor.

4 Basic requirements

4.1 Environmental conditions 4.1.1 Normal working atmospheric conditions a) Ambient temperature. -10℃～＋55℃. b) Relative humidity. 95% (no condensation or freezing inside the device). c) Atmospheric pressure. 80kPa～106 kPa. 4.1.2 Environmental conditions for storage and transportation The storage environment temperature is -20℃～+55℃, and the relative humidity is not more than 85%. The transportation environment temperature is -40℃～＋70℃, and the relative humidity is not more than 85%. 4.2 Rated electrical parameters 4.2.1 DC working power supply (auxiliary excitation quantity) The requirements for the DC working power supply (auxiliary excitation) of the device are as follows. a) Rated voltage. 220V, 110V; b) Allowable deviation. -20%～＋10%; c) Ripple coefficient. not more than 5%. 4.2.2 Incentive The amount of excitation for the device is specified as follows. a) AC voltage rating. 100/3 V, 100V; b) AC current rating. 1A, 5A; c) Frequency rating. 50Hz. 4.2.3 DC circuit The rated voltage range of the rotor voltage loop. 50V～600V. 4.3 General requirements 4.3.1 The protection functions of the generator motor should be integrated in the same protection device. The protection functions of the main transformer and the excitation transformer should be integrated in the same Inside the protection device. 4.3.2 The device shall have the function of identifying working conditions and be equipped with corresponding blocking logic. When the pumped storage unit is in various operating conditions or when the working conditions are changed, the installation The setting should not be moved by mistake or refused to move. 4.3.3 The device should have a hard pressure plate for the protection function to be switched in and out. 4.3.4 The relay in the device directly connected to the circuit breaker trip coil and the controller shall meet the requirements of DL/T 478. 4.3.5 When the device loses working power, the recorded information should not be lost. 4.3.6 The device should have interfaces for time synchronization, communication, debugging and printing. 4.3.7 The device should have hardware and software monitoring functions, and should automatically alarm, lock and record abnormalities. 4.3.8 The recording function of the device shall meet the following requirements. a) Record the whole process information of the protection action and have the function of storing more than 8 times; b) Convert, output or upload recorded data in accordance with GB/T 14598.24; c) Display, access or print of recorded information; d) Recording information includes operating components, operating time, switch displacement, self-check information, fixed value, pressure plate status and fault recorder. 4.3.9 Accuracy and variation, wiring terminal requirements, switch input and output, overload capacity, power consumption, electromagnetic compatibility requirements, absolute Edge requirements, mechanical requirements, and continuous energization performance should meet the requirements of DL/T 478. 4.3.10 The safety requirements of the device shall comply with the provisions of DL/T 478.

5 Functional requirements

5.1 Generator motor protection 5.1.1 Longitudinal differential protection The longitudinal differential protection shall meet the following technical requirements. a) The differential range including the electric brake short-circuit switch shall be locked during electric brake; b) The differential range, including the dragged switch, should be locked at static frequency conversion start and back-to-back start; c) The differential range including the drag switch should be locked in the drag condition; d) It shall have braking characteristics to prevent malfunction of faults outside the zone; e) There should be measures to prevent malfunction of TA during transient saturation; f) It should have the TA disconnection discrimination function, and the blocking ratio differential or alarm can be selected, when the current is greater than 1.2 to 1.5 times the rated current The lock can be automatically released when g) Applicable frequency range. 10Hz～55Hz, there should be no malfunction below 10Hz; h) It shall have the function of differential current over-limit alarm; i) The accuracy of the setting value when running at rated frequency. 5% or 0.02 nI, the accuracy of the setting value when running at a frequency of 25Hz～50Hz. 5% or 0.05 nI; j) The differential current is twice the setting value, the action time at the rated frequency is not more than 30ms, and the action at the frequency 25Hz～50Hz is running The time is not more than 2 times the electrical cycle. 5.1.2 Split-phase transverse differential protection Split-phase transverse differential protection shall meet the following technical requirements. a) It should have braking characteristics to prevent malfunctions of outside faults; b) Measures should be taken to prevent malfunction of TA during transient saturation; c) It shall have the function of identifying the disconnection of TA, and can choose to block the differential or alarm, when the current is greater than 1.2 to 1.5 times the rated current Automatically unlock; d) Applicable frequency range. 10Hz～55Hz, there should be no malfunction below 10Hz; e) It shall have the function of differential current over-limit alarm; f) The accuracy of the setting value when running at rated frequency. 5% or 0.02 nI, the accuracy of the setting value when running at a frequency of 25Hz～50Hz. 5% or 0.05 nI; g) The differential current is 2 times the setting value, the action time at rated frequency is not more than 30ms, and the action is running at frequency 25Hz～50Hz The time is not more than 2 times the electrical cycle. 5.1.3 Single element transverse differential protection Single element transverse differential protection shall meet the following technical requirements. a) There should be no malfunction when failure occurs outside the zone; b) When running at rated frequency, the filtering ratio of the third harmonic component should not be less than 100; c) The return coefficient should not be less than 0.9; d) Applicable frequency range. 10Hz～55Hz, there should be no malfunction below 10Hz; e) The accuracy of the setting value when running at rated frequency. 2.5% or 0.02 nI, the accuracy of the setting value when running at a frequency of 25Hz～50Hz. 5% or 0.05 nI; f) The transverse difference current is 1.5 times the setting value, the accuracy of the delay setting value at the rated frequency is 1% or 70ms, and the frequency is 25Hz～50Hz The accuracy of the delay setting value during operation is 1% or 2 times the electrical cycle. 5.1.4 Composite voltage overcurrent protection The composite voltage overcurrent protection shall meet the following technical requirements. a) The compound voltage overcurrent protection of self-excited generator motor shall have current memory function; b) Return coefficient. current and negative sequence voltage components should not be less than 0.9, and low voltage components should not be greater than 1.1; c) The accuracy of current setting value. 2.5% or 0.02 nI, the accuracy of voltage setting value. 2.5% or 0.01 nU, negative sequence voltage setting Value accuracy. 5% or 0.1V; d) When the current and negative sequence voltage are 1.5 times the setting value, and the low voltage is 0.8 times the setting value, the accuracy of the time setting value. 1% or 40ms. 5.1.5 Zero sequence voltage stator grounding protection The zero sequence voltage stator grounding protection shall meet the following technical requirements. a) It shall have the function of filtering third harmonic voltage, and the filtering ratio of the third harmonic component shall not be less than 100 when running at rated frequency; b) The zero sequence voltage acting on the trip should be taken from the neutral point of the generator motor. If it is taken from the generator motor terminal, it should have a TV disconnect Lock function; c) Applicable frequency range. 10Hz～55Hz, there should be no malfunction below 10Hz; d) The return coefficient should not be less than 0.9; e) The accuracy of the zero sequence voltage setting value when running at rated frequency. 2.5% or 0.1V, the zero sequence voltage when running at a frequency of 25Hz～50Hz The accuracy of the setting value. 5% or 0.2V; f) The zero sequence voltage is 1.5 times the setting value, the accuracy of the delay setting value at the rated frequency is 1% or 70ms, and the frequency is 25Hz～50Hz The accuracy of the delay setting value during operation is 1% or 2 times the electrical cycle. 5.1.6 Third-harmonic voltage stator grounding protection The third harmonic voltage stator grounding protection should meet the following technical requirements. a) Blocking during static frequency conversion starting, back-to-back starting, and electric braking; b) The setting basis should be provided through the parameter monitoring function; c) Reliably reflect the ground fault near the neutral point of the generator, and form a 100% stator grounding protection with the zero sequence voltage stator grounding protection; d) When 1.5 times the setting value, the accuracy of the time setting value. 1% or 70ms. 5.1.7 Injection stator grounding protection The injection stator grounding protection shall meet the following technical requirements. a) 100% stator grounding protection should be realized independently; b) The resistance criterion should be blocked during static frequency conversion starting, back-to-back starting and electric braking, and a specific low-frequency blocking method can also be used; c) The injection source should have voltage loss and fault or overload protection alarm functions; d) The injection voltage should not exceed 2% NU; e) The reliably reflected grounding transition resistance value of the generator motor stator winding should not be less than 1kΩ; f) When the resistance is 0.5 times the setting value, the accuracy of the resistance criterion time setting value. 1% or 120ms; g) When the zero sequence current is 1.5 times the setting value, the accuracy of the zero sequence current criterion time setting value. 1% or 120ms. 5.1.8 Rotor grounding protection The rotor grounding protection should meet the following technical requirements. a) It should not be affected by the distributed capacitance of the rotor circuit to the ground and other additional capacitance; b) It should meet the measurement requirements in the non-excitation state; c) Under the same setting value, when one point grounding occurs at different locations of the rotor winding, the error of the action value is. when the setting value is 1kΩ～5kΩ When the tolerance is ±0.5kΩ, when the setting value is greater than 5kΩ, the tolerance is ±10%; d) Minimum setting range. 1kΩ～10kΩ; e) The return coefficient should not be greater than 1.3. 5.1.9 Definite time overexcitation protection The definite time overexcitation protection shall meet the following technical requirements. a) The time limit should be no less than two paragraphs; b) The applicable frequency range is 10Hz～65 Hz, and there should be no malfunction below 10Hz; c) The return coefficient should not be less than 0.96; d) When the frequency is 25Hz～65Hz, the accuracy of the setting value. 2.5%; e) The overexcitation multiple is 1.5 times the setting value, and when the frequency is 25Hz～65Hz, the accuracy of the time setting value. 1% or 3.5 times Electrical cycle. 5.1.10 Inverse time overexcitation protection Inverse time overexcitation protection should meet the following technical requirements. a) The inverse time characteristic should be adjustable; b) Long time delay can be set to 1000s; c) The whole characteristic should be composed of long delay section, inverse time limit section and quick disconnect section; d) The applicable frequency range is 10Hz～65 Hz, and there should be no malfunction below 10Hz; e) When the frequency is 25Hz～65Hz, the accuracy of the overexcitation multiple setting value. 2.5%; f) When the overexcitation multiple is 1.5 times the setting value, and the frequency is 25Hz～65Hz, the time setting value of the long delay section and the quick disconnection section are accurate Accuracy. 1% or 3.5 times the electrical cycle. 5.1.11 Overvoltage protection Overvoltage protection should meet the following technical requirements. a) The return coefficient should not be less than 0.95; b) The accuracy of the setting value. 2.5% or 0.01 nU; c) When the voltage is 1.5 times the setting value, the accuracy of the time setting value. 1% or 40ms. 5.1.12 Low voltage protection Low voltage protection should meet the following technical requirements. a) Except for pumping conditions, power generation phase modulation conditions and pumping phase modulation conditions, all other operating conditions should be locked; b) It shall have the function of TV disconnection lockout; c) The return coefficient should not be greater than 1.1; d) The accuracy of the setting value of the phase-to-phase voltage. 2.5% or 0.01 nU; e) When the voltage is 0.5 times the setting value, the accuracy of the time setting value. 1% or 40ms. 5.1.13 Over-frequency protection Over-frequency protection should meet the following technical requirements. a) Frequency measurement range. 40Hz～65Hz; b) Frequency measurement accuracy. 0.05Hz; c) The accuracy of the time setting value. 2.5% or 3.5 times the electrical cycle. 5.1.14 Low frequency protection Low frequency protection should meet the following technical requirements. a) Except for pumping conditions, power generation phase modulation conditions and pumping phase modulation conditions, all other operating conditions should be locked; b) Frequency measurement range. 40Hz～65Hz; c) Frequency measurement accuracy. 0.05Hz; d) The accuracy of the time setting value. 2.5% or 3.5 times the electrical cycle. 5.1.15 Loss of Excitation Protection The loss-of-excitation protection shall meet the following technical requirements. a) It should be locked before the unit is connected to the grid; b) It should be able to detect the static stability boundary or steady-state asynchronous boundary of the unit; c) It should be able to detect all kinds of total loss of magnetism and partial loss of magnetism under different loads; d) Misoperation of the unit during normal phase advance operation should be prevented; e) Misoperation should be prevented during system oscillation; f) Should prevent system failure and malfunction during fault removal; g) TV disconnection and misoperation during voltage switching should be prevented; h) The accuracy of impedance and power settings. 5%, the accuracy of other settings. 2.5%; i) The accuracy of the time setting value. 1% or 40ms. 5.1.16 Out of step protection Out-of-step protection should meet the following technical requirements. a) It should be locked before the unit is connected to the grid; b) It should be able to detect acceleration and deceleration out of step; c) It should be able to record the number of sliding poles; d) It should be able to distinguish short circuit and out of step; e) It should be able to distinguish whether the oscillation center is inside or outside the generator motor transformer group; f) It should be able to distinguish between stable oscillation and out-of-step of the unit; g) When the current is too large to affect the safety of circuit breaker tripping, the outlet should be blocked; h) Possess the function of optional loss of field protection to lock out of step protection; i) The accuracy of impedance setting value. 5%, the accuracy of other setting values. 2.5%. 5.1.17 Rotor surface (negative sequence) definite overload protection Rotor surface (negative sequence) definite overload protection shall meet the following technical requirements. a) It should be locked before the unit is connected to the grid; b) The time limit is divided into at least two sections; c) The return coefficient should not be less than 0.9; d) The accuracy of the setting value. 5% or 0.02 nI; e) When the negative sequence current is 1.5 times the setting value, the accuracy of the time setting value. 1% or 40ms. 5.1.18 Rotor surface (negative sequence) inverse time overload protection Rotor surface (negative sequence) inverse time overload protection shall meet the following technical requirements. a) It should be locked before the unit is connected to the grid; b) Inverse time limit characteristics should be adjustable; c) Long time delay can be set to 1000s; d) The whole characteristic should be composed of long delay section, inverse time limit section and quick disconnect section; e) The accuracy of the setting value. 5% or 0.02 nI; f) When the negative sequence current is 1.5 times the setting value, the accuracy of the time setting value of the long delay section and the quick break section. 1% or 40ms. 5.1.19 Stator definite time limit overload protection The stator definite time overload protection shall meet the following technical requirements. a) The time limit is divided into at least two periods; b) The return coefficient should not be less than 0.9; c) The accuracy of the current setting value. 2.5% or 0.02 nI; d) When the current is 1.5 times the setting value, the accuracy of the time setting value. 1% or 40ms. 5.1.20 Stator inverse time overload protection The stator inverse time overload protection shall meet the following technical requirements. a) The inverse time characteristic should be adjustable; b) The whole characteristic should be composed of long delay section, inverse time limit section and quick disconnect section; c) Long time delay can be set to 1000s; d) The accuracy of the setting value. 2.5% or 0.02 nI; e) When the current is 1.5 times the setting value, the accuracy of the time setting value of the long delay section and quick break section. 1% or 40ms. 5.1.21 Generator reverse power protection Generator reverse power protection should meet the following technical requirements. a) Except for power generation conditions, all other conditions should be locked; b) The principle of active power measurement should have nothing to do with the magnitude of reactive power; c) Should have TV disconnection lockout function; d) The return coefficient should not be less than 0.8; e) The accuracy of active power setting value. 10% or 0.002 nP; f) When the active power is 1.5 times the setting value, the accuracy of the time setting value. 1% or 40ms. 5.1.22 Motor low power protection Motor low-power protection should meet the following technical requirements. a) Except for pumping conditions, other conditions should be locked; b) The principle of active power measurement should have nothing to do with the magnitude of reactive power; c) Should have TV disconnection lockout function; d) The return coefficient should not be less than 0.8; e) The accuracy of active power setting value. 10% or 0.002 nP; f) When the active power is 0.5 times the setting value, the accuracy of the time setting value. 1% or 40ms. 5.1.23 Wrong power-on protection The accidental power-on protection shall meet the following technical requirements. a) It shall have the function of identifying simultaneous grid connection and wrong closing; b) It should have the function of automatically exiting (putting into) operation after normal grid connection (disconnection); c) The accuracy of the setting value. 5%; d) When the current is 1.5 times the setting value, the accuracy of the time setting value. 1% or 40ms. 5.1.24 Low frequency overcurrent protection Low-frequency overcurrent protection should meet the following technical requirements. a) The protection should be divided into two stages, the low fixed value section is blocked after the unit is connected to the grid and when the electric brake is connected, and the high fixed value section is blocked after the unit is connected to the grid; b) The applicable frequency range is 10Hz～55 Hz, and there should be no malfunction below 10Hz; c) When the frequency is 25Hz～50Hz, the accuracy of the setting value. 5% or 0.05 nI; d) When the current is 1.5 times the setting value and the frequency is 25Hz～50Hz, the accuracy of the time setting value. 1% or 2 times the electrical cycle. 5.1.25 Voltage phase sequence protection Voltage phase sequence protection should...

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of DL/T 2018-2019_English be delivered?

Answer: Upon your order, we will start to translate DL/T 2018-2019_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 2018-2019_English with my colleagues?

Answer: Yes. The purchased PDF of DL/T 2018-2019_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+ countries

Question 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.