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DL/T 2006-2019: (Technical specification for dry-type air core reactor anti-overvoltage test equipment)
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(Technical specification for dry-type air core reactor anti-overvoltage test equipment)
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Basic data | Standard ID | DL/T 2006-2019 (DL/T2006-2019) | | Description (Translated English) | (Technical specification for dry-type air core reactor anti-overvoltage test equipment) | | Sector / Industry | Electricity & Power Industry Standard (Recommended) | | Classification of Chinese Standard | K41 | | Word Count Estimation | 16,117 | | Date of Issue | 2019-06-04 | | Date of Implementation | 2019-10-01 | | Regulation (derived from) | Natural Resources Department Announcement No. 7 of 2019 | | Issuing agency(ies) | National Energy Administration | DL/T 2006-2019: (Technical specification for dry-type air core reactor anti-overvoltage test equipment)
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Technical specification for turn-to-turn overvoltage testing devices of air-core reactors
ICS 29.180
K 41
Record number. 63143-2018
People's Republic of China Electric Power Industry Standard
Dry-type air-core reactor turn-to-turn overvoltage test equipment
specifications
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 Conditions of use...2
5 Equipment composition...2
6 Performance requirements...3
6.1 Overall output performance...3
6.2 Performance of key components of equipment...3
6.3 Mechanical properties...4
6.4 Safety performance...4
6.5 Shell protection...4
6.6 Structure and appearance...4
7 Test method...4
7.1 Test conditions...4
7.2 Overall performance test...5
7.3 Voltage divider test...5
7.4 Performance test of digital recorder...5
7.5 Mechanical performance test...5
7.6 Safety performance test...5
7.7 Enclosure protection inspection...5
7.8 Visual inspection...6
8 Inspection rules...6
8.1 Inspection classification...6
8.2 Type test...6
8.3 Factory test...6
8.4 Periodic calibration test...6
9 Marking, packaging, transportation and storage...6
9.1 Logo...6
9.2 Packaging...7
9.3 Transportation and storage...7
Foreword
This standard is compiled in accordance with the rules given in GB/T 1.1-2009 "Guidelines for Standardization Work Part 1.Standard Structure and Compilation".
This standard was proposed by the China Electricity Council.
This standard is under the jurisdiction of the Power Transformer Standardization Technical Committee (DL/T C 02) of the power industry.
Drafting organizations of this standard. Guangdong Power Grid Co., Ltd. Electric Power Research Institute, Harbin University of Science and Technology, China Electric Power Research Institute
Co., Ltd., Inner Mongolia Electric Power Research Institute, State Grid Jiangxi Electric Power Company Electric Power Research Institute, China Southern Power Grid EHV Transmission Company
Division, State Grid Electric Power Research Institute Wuhan Nanrui Co., Ltd., State Grid Jilin Province Electric Power Co., Ltd. Electric Power Research Institute, State Grid Gansu
Provincial Electric Power Company Electric Power Research Institute, State Grid Shaanxi Electric Power Company Electric Power Research Institute, TBEA Shenyang Transformer Group Co., Ltd.,
Shunte Electrical Equipment Co., Ltd., Xi'an Zhongyang Electric Co., Ltd., Suzhou Industrial Park Hyva Technology Co., Ltd., Mingzhu Electric Co., Ltd.
Limited company.
The main drafters of this standard. Ma Zhiqin, Xu Linfeng, Wang Yonghong, Zhang Shuzhen, Che Chuanqiang, Guo Huihao, Zhou Qiukuan, Zhang Liang, Liu Yu,
Zhao Chunming, Zhang Kai, Lu Liang, Sun Jian, Li Xia, Wang Yaohui, Ge Kai, Li Xiaojun, Mao Qiwu.
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 (Baiguang, Xuanwu District, Beijing)
No. 1, Lu Er Tiao, 100761).
Technical specification of dry-type air-core reactor turn-to-turn overvoltage test equipment
1 Scope
This standard specifies the operating conditions, composition, performance requirements, test methods and inspections of dry-type air-core reactor turn-to-turn overvoltage test equipment
Rules, as well as signs, packaging, transportation and storage.
This standard applies to 6kV～35kV dry-type air-core reactor turn-to-turn overvoltage test equipment.
Other voltage levels dry-type air-core reactor turn-to-turn overvoltage test equipment can be implemented by reference.
2 Normative references
The following documents are indispensable for the application of this standard. For dated reference documents, only the dated version applies to this standard.
For undated reference documents, the latest version (including all amendments) is applicable to this standard.
GB/T 191 Packaging, storage and transportation pictorial signs
GB/T 1094.6-2011 Power Transformer Part 6.Reactor
GB 4208 enclosure protection class (IP code)
GB/T 6587-2012 General Specification for Electronic Measuring Instruments
GB 16896.1-2005 High Voltage Impulse Measuring Instruments and Software Part 1.Requirements for Instruments
DL/T 1222-2013 Shock divider calibration specification
JB/T 8168 Pulse capacitor and DC capacitor
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1
High frequency pulse oscillation voltage wave
An AC sinusoidal voltage wave whose amplitude decays exponentially. Its wave front time is much shorter than the standard lightning shock wave front time. The voltage wave frequency
The rate is in the range of 10kHz to 100kHz.
3.2
Full voltage
100% test voltage applied to both ends of the sample.
3.3
Initial testing voltage
The test voltage used to obtain the reference waveform generally does not exceed 20% of the full voltage.
3.4
Turn-to-turn overvoltage test
A test in which a high-frequency pulse oscillating voltage wave is applied to a reactor to assess its turn-to-turn insulation. Also called high frequency pulse oscillation voltage test.
3.5
Dry-type air-core reactor turn-to-turn overvoltage test equipment
It is used to test the inter-turn insulation performance of dry-type air-core reactors, and has the functions of generating, measuring and displaying high-frequency pulse oscillation voltage.
equipment.
4 Conditions of use
The equipment should be able to work normally under the following conditions of use.
a) Ambient temperature. -10℃～40℃;
b) Environmental relative humidity. no more than 85% (25°C);
c) External power supply requirements.
1) Rated voltage. AC single-phase 220V (1 ± 10%) or three-phase 380V (1 ± 10%);
2) Frequency. (50±0.5) Hz;
3) Total harmonic distortion rate. not more than 5%;
d) Altitude. not higher than 1000m;
If the working environment conditions exceed the above-mentioned regulations, special design and manufacturing shall be carried out through negotiation between the supplier and the buyer.
5 Equipment composition
The equipment consists of a DC power supply, a charging resistor, a charging capacitor, a discharge switch, a voltage divider, a digital recorder, etc. It usually has a discharge switch
There are two types of structures. off-grounding type and charging capacitor grounding type. The wiring principles are shown in Figure 1 and Figure 2 respectively.
6 Performance requirements
6.1 Overall output performance
The equipment should be able to continuously output high-frequency pulse oscillating voltage waves, the voltage amplitude should be adjustable within the maximum output voltage range, the voltage waveform and frequency
The following requirements should be met.
a) The equipment should be able to generate no less than 3000 high-frequency pulse oscillating voltage waves within 1 min;
b) The initial peak deviation of each voltage wave is less than 3%;
c) The maximum initial peak value of the voltage wave should reach the full power of the reactor turn-to-turn overvoltage test specified in Appendix G of GB/T 1094.6-2011
Pressure value
d) The oscillation frequency of each voltage wave should be in the range of 10kHz~100kHz;
e) Near the peak value of the voltage wave, the overshoot or oscillation amplitude should not exceed 5% of the peak value of the voltage wave;
f) The wavefront time of the voltage wave should be much less than the wavefront time of the standard lightning impulse test.
6.2 Performance of key components of equipment
6.2.1 DC power supply
a) The maximum output voltage should not be lower than the full test voltage, and the output voltage should be continuously adjustable.
b) Have enough output capacity to ensure that the initial voltage peak of each discharge waveform reaches the full test voltage.
6.2.2 Charging capacitor
a) The pulse capacitor should be selected, and its performance meets the requirements of JB/T 8168.
b) The capacitance should meet the formula (1)
c) It should be able to withstand 1.4 times the maximum output voltage of the equipment for 1 min without breakdown or flashover.
6.2.3 Discharge switch
a) It should be able to achieve no less than 3000 opening and closing times per minute. The turn-on and turn-off of the discharge switch should be possible under the calibrated voltage and full voltage
control.
b) Electronic switches or controllable ignition ball gaps can be used according to the principle of the test equipment. The electronic switch trigger unit is separated from the high voltage unit
It should be able to ensure the synchronous action of each electronic switch unit. The size of the controllable ignition ball gap should be continuously adjustable, and there should be an auxiliary arc extinguishing device between the ball gaps.
To ensure that the discharge voltage is stable during the test.
6.2.4 Voltage divider
a) A weak damping capacitor divider should be used.
b) The partial pressure ratio deviation, linearity and step wave response should all meet the requirements of DL/T 1222.
c) It should be able to withstand 1.1 times the maximum output voltage of the equipment without breakdown or flashover.
6.2.5 Digital recorder
a) The measurement uncertainty of the peak voltage should not be greater than 2%.
b) The bandwidth should be no less than 10MHz, and the sampling rate should be no less than 100MS/s.
c) The uncertainty of the impact scale factor should meet the requirements of 7.1.2.3 in GB/T 16896.1-2005.
d) Dynamic local nonlinearity should meet the requirements of 7.1.2.7 in GB/T 16896.1-2005.
e) It should have the ability to resist electromagnetic interference and be able to clearly record the oscillating voltage waveform.
6.3 Mechanical properties
6.3.1 Vibration
It should be able to withstand the vibration test of group III specified in 5.9.3.3 of GB/T 6587-2012.
6.3.2 Impact
It shall be able to withstand the impact test and tilt drop test of the group specified in 5.9.4.3 of GB/T 6587-2012 as Group III.
6.3.3 Transportation
It should be able to withstand the transport test with the circulation condition level specified in 5.10.1.3 of GB/T 6587-2012 as level 3.
6.4 Safety performance
6.4.1 The external power input port should be able to withstand a power frequency withstand voltage test of 2kV, which lasts 1min, without breakdown or flashover.
6.4.2 It shall have the safety protection function to prevent illegal operation and emergency power off in the event of an accident.
6.4.3 It shall have automatic protection functions such as over-voltage, over-current, zero start blocking, etc., and the voltage output shall be automatically shut down in abnormal working conditions.
Out.
6.5 Shell protection
It shall meet the requirements of IP51 for the enclosure protection level specified in GB 4208.
6.6 Structure and appearance
6.6.1 The structural design should be optimized, the test wiring should be reduced, and the transportation and on-site assembly should be convenient.
6.6.2 The nameplate marks are clear and reliable. The shell of each group of components should have no obvious defects, and the plating, oxide layer, paint layer and other coatings should be good.
7 Test method
7.1 Test conditions
The test conditions of the equipment should meet the following requirements.
a) Ambient temperature. -10℃～40℃;
b) Environmental relative humidity. no more than 85% (25°C), no condensation;
c) External power supply requirements.
1) Rated voltage. AC single-phase 220V (1 ± 10%) or three-phase 380 V (1 ± 10%);
2) Frequency. (50±0.5) Hz;
3) Total harmonic distortion rate. not more than 5%.
7.2 Overall performance test
A standard voltage divider and a reactor are connected in parallel between the high-voltage output terminal and the ground terminal of the equipment, and the low-voltage arm of the standard voltage divider is connected to the wave recorder.
Continuously measure for 1 min under the maximum output voltage, the number of high-frequency pulse oscillating voltage waves output by the equipment should meet the requirements of 6.1 a) of this standard, high
The initial peak value of the frequency pulse oscillating voltage wave should meet the requirements of 6.1 b) and 6.1 c), and the frequency of the pulse oscillating voltage wave should meet the requirements of 6.1 d) of this standard.
The overshoot or oscillation amplitude near the peak value of the voltage wave shall meet the requirements of 6.1 e) of this standard.
7.3 Voltage divider test
7.3.1 Lightning impulse voltage verification
The test method is in accordance with 7.6 of DL/T 1222-2013, and the result should meet the requirements of 6.2.4 b) of this standard.
7.3.2 Calculation of response time and oscillation amplitude ratio
The test method is in accordance with 7.8 of DL/T 1222-2013, and the result should meet the requirements of 6.2.4 b) of this standard.
7.4 Performance test of digital recorder
7.4.1 Shock scale factor measurement
The test method is in accordance with the provisions of Article 5.1 of GB/T 16896.1-2005, and the results shall meet the requirements of Article 6.2.5 of this standard c).
7.4.2 Dynamic local nonlinear measurement
The test method is in accordance with 5.8 of GB/T 16896.1-2005, and the result should meet the requirements of 6.2.5 d) of this standard.
7.5 Mechanical performance test
7.5.1 Vibration test
The test method is in accordance with 5.9.3.3 of GB/T 6587-2012, and the result should meet the requirements of 6.3.1 of this standard.
7.5.2 Impact test
The test method is in accordance with 5.9.4.3 of GB/T 6587-2012, and the result should meet the requirements of 6.3.2 of this standard.
7.5.3 Transport test
The test method is in accordance with 5.10.2 of GB/T 6587-2012, and the result should meet the requirements of 6.3.3 of this standard.
7.6 Safety performance test
7.6.1 Insulation performance test
The system is in a non-working state, and a power frequency withstand voltage test is performed between the external power input terminal and the accessible metal parts of the system. Test voltage
2kV, lasting 1min, no flashover, breakdown and component damage should occur.
7.6.2 Overvoltage protection performance test
Choose 3 over-voltage protection setting values within the maximum output voltage range of the equipment, and start the voltage boost respectively, so that the output voltage gradually rises to over
When the voltage protection action is set, the equipment should act immediately to cut off the high voltage output control switch.
7.6.3 Zero start test
Place the pressure regulating knob at any position other than the zero position, and the equipment should not start.
7.7 Shell protection inspection
The test method is implemented in accordance with GB 4208, and the results meet the requirements of 6.5 of this standard.
7.8 Visual inspection
Check item by item in accordance with the requirements of 6.6.1 and 6.6.2 of this standard.
8 Inspection rules
8.1 Inspection classification
Inspection is divided into type test, factory test and periodic inspection. The inspection items, technical requirements and test methods are listed in Table 1.
8.2 Type test
8.2.1 Type test shall be carried out in accordance with this standard in any of the following situations.
a) Appraisal of the finalization of the production of new products or old products;
b) After formal production, if changes in design, process or main components or materials may affect product performance;
c) Continuously produced products shall be inspected every 5 years;
d) When the statutory product quality supervision department proposes a type inspection request;
8.2.2 The inspection items, technical requirements and test methods of the type test shall be implemented in accordance with Table 1.
8.3 Factory test
8.3.1 Each product shall be inspected and only after the certificate of conformity is issued.
8.3.2 The inspection items, technical requirements and test methods of the factory test shall be implemented in accordance with Table 1.
8.4 Periodic inspection
The cycle is generally one year. The inspection items, technical requirements and test methods shall be implemented in accordance with Table 1.
9 Marking, packaging, transportation and storage
9.1 Logo
The nameplates of the system host and key components should indicate the following.
a) Product specifications and models;
b) The name and trademark of the manufacturing company;
c) Factory number and production date;
d) Product implementation standard number.
9.2 Packaging
9.2.1 The words and signs on the outer wall of the packaging box should be clear, and should not be blurred due to long time and friction during handling. The content should include.
a) The name of the manufacturer;
b) Product name and model specification;
c) Receiving unit, address and shipping unit;
d) Packing volume (length × width × height);
e) The packaging box should be marked with "Handle with care", "Afraid of wet", "Upward", "No rolling" signs, and the signs should comply with GB/T 191.
set;
f) Product implementation standard number and name.
9.2.2 The packing box should have complete accessories and the following documents.
a) Product qualification certificate and factory report;
b) Packing delivery list;
c) Instructions for use, including the main technical conditions, basic principles of the instrument, operating procedures, maintenance points, and safety precautions
Items, etc.;
d) Attached (spare) parts list.
9.3 Transportation and storage
9.3.1 It should be placed in a dry compartment during transportation, and be protected from rain, sun and mechanical damage.
9.3.2 The ambient temperature of the warehouse where the products are stored should be -10℃～40℃, the relative humidity should not be more than 85%, it should be clean and free of acid and alkali corrosion.
Gas, the placement direction meets the requirements of the product instructions.
9.3.3 If the product has been stored for more than 1 year, it shall be verified in accordance with the requirements of 8.4 of this standard before use.
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