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NB/T 10197-2019 English PDF

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NB/T 10197-2019: General technical specification of high-altitude field mobile impulse voltage generator
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Basic data

Standard ID	NB/T 10197-2019 (NB/T10197-2019)
Description (Translated English)	General technical specification of high-altitude field mobile impulse voltage generator
Sector / Industry	Energy Industry Standard (Recommended)
Classification of Chinese Standard	K04
Classification of International Standard	29.020
Word Count Estimation	16,147
Date of Issue	2019-06-04
Date of Implementation	2019-10-01
Issuing agency(ies)	National Energy Administration

NB/T 10197-2019: General technical specification of high-altitude field mobile impulse voltage generator

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General technical specification of high-altitude field mobile impulse voltage generator ICS 29.020 K 04 NB Energy Industry Standards of the People's Republic of China High altitude field mobile impulse voltage generator General technical conditions 2019 -06 -04 released 2019 -10 -01 implementation Issued by National Energy Administration

Foreword...II 1 Scope...1 2 Normative references...1 3 Terms and definitions...1 4 Product Classification...2 5 Technical requirements...2 6 Test method...7 7 Inspection rules...9 8 Marking, packaging, transportation and storage...11 Appendix A (informative appendix) Rated voltage and energy series...13

Foreword

This standard is compiled according to the rules given in GB/T 1.1-2009. This standard was proposed by China Electrical Equipment Industry Association. This standard is under the jurisdiction of the National Plateau Electrical Products Environmental Technology Standardization Technical Committee (SAC/TC 330). Drafting organizations of this standard. Yunnan Power Grid Co., Ltd. Electric Power Research Institute, Kunming Electrical Apparatus Research Institute, Shandong Wide Area Technology Limited liability company, China Electric Power Research Institute Co., Ltd., Yunnan Power Grid Co., Ltd., Guangdong Yuanguang Cable Industry Co., Ltd., Electric Power Research Institute of Qinghai Electric Power Company, State Grid Jiangsu Electric Power Research Institute, Guangzhou Power Supply Bureau Co., Ltd. Power Test Research Institute, China Southern Power Grid Research Institute Co., Ltd., State Grid Hubei Electric Power Co., Ltd. Electric Power Research Institute, South China Fang Grid Co., Ltd. EHV Transmission Company, State Grid Sichuan Electric Power Company Electric Power Research Institute, Honghe University, Kunming University of Science and Technology, Beijing Huatian Electromechanical Research Institute Co., Ltd., Jiangsu Qiyuan Leiyu Electric Technology Co., Ltd., Huarui Wind Power Technology (Group) Co., Ltd., Dongying Zhitong New Energy Technology Co., Ltd. The main drafters of this standard. Cheng Zhiwan, Zhou Qiongfang, Ma Yi, Yao Jirong, Ma Hongming, Yao Xiuyuan, Wang Shengfu, Wang Ke, Deng Jun, Zhao Xianping, Qian Guochao, Zhao Ronghao, Cai Zhongguang, Jiang Lusi, Quan Jiangtao, Zhang Gongyuan, Xiong Jun, Xu Xiaowei, Gao Chao, Zhao Ke, Zeng Hong, Zhong Jian Ming, Yang Ajuan, Gao Bo, Chen Yong, Niu Lin, Wu Tianbao, Li Mengli, Jia Lianhua, Zhai Bing, Yang Cheng, Zhang Guangbin, Feng Jinghua, Zhang Shenglin, Wu Junhui, Xin Lifu, Wang Zhengshan. General technical requirements for mobile impulse voltage generators at high altitude

1 Scope

This standard specifies the product classification, technical requirements, and testing of mobile impulse voltage generator devices (hereinafter referred to as devices) at high altitudes Methods, inspection rules and signs, packaging, transportation and storage. This standard is applicable to areas with a rated voltage of 300 kV to 4 800 kV and a rated energy of 5 kJ to 480 kJ in an altitude of 1 000 m to 5 000 m. Field mobile impulse voltage generator device. It can be used as reference for areas below 1000 m above sea level.

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 document. For undated references, the latest version (including all amendments) applies to this document. GB/T 191 Packaging, Storage and Transportation Graphic Mark GB/T 2424.25 Environmental testing of electrical and electronic products Part 3.Test guidelines Seismic test methods GB/T 16927.1 High Voltage Test Technology Part 1.General Definition and Test Requirements GB/T 16927.2-2013 High Voltage Test Technology Part 2.Measurement System GB/T 16927.3 High Voltage Test Technology Part 3.Definition and Requirements of Field Test GB/T 20626.1 Special environmental conditions Plateau electrical and electronic products Part 1.General technical requirements JB/T 9641 test transformer DL/T 1222-2013 Shock divider calibration specification

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 High altitude Areas above 1 000 m above sea level. 3.2 Impulse voltage A non-periodic transient voltage that rises quickly to a peak value and then slowly drops to zero. For special purposes, an approximately linear rise or transient oscillation or approximately rectangular shock wave can be used. [GB/T 16927.1-2011, definition 7.1.1] 3.3 Impulse voltage generator for mobile sate test It has the characteristics of quick installation, disassembly, and convenient transportation. It can produce pulses such as lightning impulse voltage and operating impulse voltage in different scenarios High-voltage generating device of voltage. 3.4 Voltage utilization factor The ratio of the amplitude of the output voltage to the product of the charging voltage and the number of stages of the impulse voltage generator. 3.5 Synchronism Characteristic After the impulse voltage generator is triggered, the uniformity of the discharge of the ball gap (or discharge gap) at all levels.

4 Product Classification

According to the structure type, the device is mainly divided into open type and closed type. The device model description is shown in Figure 1. In the picture. The feature number represents altitude, for example, feature number 2 represents altitude of 2 000 m, 5 represents altitude of 5,000 m. Refer to Appendix A for the selection of rated energy and rated voltage. Example. CDY-4800-480/C-G3 represents an open field mobile battery operated at an altitude of 3 000 m or below, a rated voltage of 4 800 kV, and a rated energy of 480 kJ. Shock voltage generator. Figure 1 Device model description

5 Technical requirements

5.1 Normal use conditions The normal use conditions of the device are as follows. a) Ambient temperature. -15 ℃~ 40 ℃; b) Environmental humidity. relative humidity is not more than 90%; c) Maximum wind speed. not less than 35 m/s; d) Seismic strength. level 7; e) Installation site. The installation site should be free of corrosive gases, vapors, chemically deposited dust, pollution, and 5.2 Altitude correction When the altitude of the product use location is different from the altitude of the test location, the altitude correction should be performed. The altitude correction factor should comply with GB/T 20626.1 According to formula (1), it should meet the requirements of Table 1. Note 1.In the routine test focusing on the assessment of internal insulation quality, according to the relevant product standards, the test voltage is set at an altitude of 1 000 m or 2 000 m The withstand voltage value of the product will not be modified. Note 2.The test voltage value is the product of the standard value of the conventional product and the altitude correction factor Ka. Note 3.If the altitude exceeds 3 500 m, Table 1 is for reference only, especially for UHV and UHV equipment. 5.3 Appearance requirements The appearance of the device should meet the following requirements. a) The surface of the device should be smooth and flat, and there should be no concave, convex marks, cracks and deformation; b) The exterior of the device should be painted for protection, and the coating should not blisters or fall off; c) There should be a grounding device and an obvious grounding mark; d) The device is fixed with durable and non-corrosive nameplate signs on obvious parts; e) The writing of the device should be clear and clear; f) All parts of the device should be free of oil leakage. 5.4 Operational requirements The device is discharged once every 90 s above 2/3 rated voltage at the corresponding altitude, and once every 60 s below 2/3 rated voltage. Can run continuously. The following requirements should be met after operation. a) All insulating parts should be free of heat, leakage, and flashover and self-discharge; b) All charging protection resistors and inductors are heating normally, and there is no obvious change in the resistance value; c) There should be no flashover phenomenon in the lightning wave and operation wave head resistance and wave tail resistance, and the resistance value should not change significantly. 5.5 Output voltage waveform 5.5.1 Standard lightning impulse voltage waveform The standard lightning impulse voltage output waveform should meet the requirements of GB/T 16927.1. a) The wave front time is 1.2 μ s, and the allowable deviation is ±30%; b) The half-peak time is 50 μ s, and the allowable deviation is ±20%; c) The allowable peak deviation is ±3%; d) The overshoot is not more than 10%. 5.5.2 Standard operating impulse voltage waveform The standard operating impulse voltage waveform should meet the requirements of GB/T 16927.1. a) Wave front time 250 μ s, allowable deviation ±20%; b) Half peak time 2 500 μ s, allowable deviation ±60%; c) The allowable peak deviation is ±3%. 5.5.3 Oscillating lightning impulse voltage waveform The waveform of the oscillating lightning impulse voltage should meet the requirements of GB/T 16927.3.The impulse voltage rapidly rises to the peak value and then accompanied by the frequency range. The damped oscillation between 15 kHz and 400 kHz is reduced to zero, with or without a change in voltage polarity. Use envelope and oscillation frequency table Describe its characteristics. 5.5.4 Oscillation operation impulse voltage waveform The impulse voltage waveform of oscillating operation shall meet the requirements of GB/T 16927.3. The voltage quickly rises to the peak value, and then decreases to zero with damped oscillations in the frequency range between 1 kHz and 15 kHz, where there is or There is no change in voltage polarity. Express its characteristics with envelope and oscillation frequency. 5.5.5 Standard waveform measurement The standard waveform measurement of the device shall be carried out in accordance with the requirements of GB/T 16927.1. 5.6 Voltage utilization factor 5.6.1 Standard lightning impulse Under no-load conditions of positive and negative lightning impulse voltage, the voltage utilization factor should not be less than 90%. At rated load and below, voltage utilization The coefficient should not be less than 85%. 5.6.2 Standard operating shock Under no-load conditions, the voltage utilization factor of positive and negative operating impulse voltage should not be less than 80%. At rated load and below, voltage utilization The coefficient should not be less than 75%. 5.6.3 Oscillating lightning impulse The positive and negative oscillating lightning impulse voltage is at or below the rated load, and the voltage utilization factor should not be less than 130%. 5.6.4 Oscillating operation shock The impulse voltage of positive and negative oscillation operation is at or below the rated load, and the voltage utilization factor should not be less than 120%. 5.7 Grounding requirements Grounding should meet the following requirements. a) The main grounding resistance of the grounding device at the installation and operation site should not exceed 0.5 Ω; b) The device should be grounded nearby, and the ground loop should use copper, aluminum metal strip or metal foil with a width of not less than 0.3 m, and the ground loop should be One point grounding, and the grounding of the secondary device cannot be used. 5.8 Impulse voltage generator body 5.8.1 General requirements General requirements of impulse voltage generator body. a) Insulating pillars should meet the requirements of mechanical strength, and at the same time, they should also have the functions of moisture-proof, waterproof and UV-proof; b) The structure of the anti-corona shielding cover is reasonable, the high altitude correction factor should be considered, and the installation is convenient; c) The measurement error of the charging voltage should be less than 1%; d) It should be equipped with capacitor automatic grounding protection device; e) On-site assembly and disassembly are convenient, and the volume and weight meet the requirements of vehicle transportation. 5.8.2 Capacitance and resistance requirements The capacitance and resistance should meet the requirements of insulation distance. The main capacitor should be a dry capacitor with no liquid leakage and no pollution. The deviation between the measured capacitance and the nameplate value does not exceed ±5%. The wave head resistance and wave tail resistance should be non-inductive resistance, and can produce different types of impact waveforms. The measured resistance value is deviated from the nameplate value The difference does not exceed ±5%. 5.8.3 Mechanical strength The mechanical strength of the impulse voltage generator body should not only meet the mechanical strength required by the device itself, but also consider transportation and natural environment The influence of other factors on the body of the impact generator. 5.8.4 Insulation strength The insulation material used in the impulse voltage generator body should be selected to meet the requirements of the relevant national and industry standards, and the external insulation strength It should be corrected according to the altitude. 5.8.5 Synchronization performance The first stage ignition ball gap of the impulse voltage generator body adopts bilateral heteropolar ignition, and other ball gaps adopt three-electrode ignition mode. Guarantee There is no refusal to move or malfunction. The ratio of the total number of asynchronization times to the total number of times is the asynchronization rate, and the asynchronization rate should not exceed 2%. 5.8.6 Requirements for discharge ball gap The ball needle of the discharge ball gap should be made of high-temperature-resistant all-tungsten material to ensure that the ball needle is ablated under long-term test voltage without burrs and pits. So as to ensure the synchronization performance of the impulse voltage generator body. The ball gap transmission mechanism is composed of a reduction motor and a direction changing mechanism. The ball distance can be automatically tracked and displayed, and the ball distance can be continuously adjusted. There is a certain relationship between the size of the ball gap and the altitude, and the adjustable stroke range of the ball gap should take into account the altitude usage conditions. Ball gap adjustment range The recommended circumference is not less than 150 mm. 5.8.7 Grounding discharge device requirements The grounding discharge device shall meet the following requirements. a) When charging is stopped or the emergency button is pressed, the automatic grounding system starts, and the main capacitor of the impulse voltage generator automatically passes through the discharge resistance Grounding; the automatic grounding protection device should be 100% reliable operation and reliable grounding under any circumstances; b) When the test stops and the test personnel climb the impulse voltage generator body to replace the resistance or repair, use a safety grounding system to All capacitors are short-circuited and grounded. 5.9 Control system 5.9.1 General requirements The control system should meet the following requirements. a) All settings, operation, measurement and other parameters of the device can be completed on the console, and the DC charging voltage and charging of the device can be set Time, discharge ball distance, trigger mode and polarity automatic switching, etc., and monitor and measure its operating status; b) All buttons for manual and automatic control are complete and accurate; c) The working status indicator light of the device should display accurately and without malfunction; d) The console should have a good grounding point; e) It has an over-voltage protection function. When the charging voltage exceeds 3% of the preset charging voltage, the over-voltage protection device should act 100% reliably; f) With over-current protection function, when the charging current exceeds the preset charging current value, the over-current protection device should be 100% reliable operation; g) The trigger ignition device should be 100% reliable; h) The ignition ball gap at all levels can be automatically adjusted to the distance corresponding to the charging voltage according to the preset reference voltage to ensure the ignition ball gap energy Enough reliable action. 5.9.2 Preset charging voltage The relative deviation between the actual charging voltage and the preset charging voltage should not be greater than ±1%. 5.9.3 Anti-interference performance The control system should have good anti-interference ability. Under 80% of the rated output voltage, flashover occurs 3 times in the gap between the bars and the plate. The system should meet the requirements of Article 5.12 of GB/T 16927.2-2013, and the control system should not appear to crash, black screen or any other failures. 5.10 Measuring system 5.10.1 General requirements The measurement system should meet the following requirements. a) The impact divider body should have sufficient mechanical strength, and the base, insulating sleeve, and equalizing ring should be firmly combined, and be moisture-proof and waterproof Function b) The base of the impact divider should have a coaxial cable socket for the coaxial cable connection, and the coaxial cable plug can be assembled through the cable output Secondary voltage. The coaxial cable should be used in conjunction with the voltage divider, and impedance matching must be carried out on the voltage divider side; c) There should be a terminal for grounding on the base of the impact divider, and a terminal for connecting the primary wire on the top. The terminal screw is straight. The diameter is not less than 12 mm; d) The whole system has three basic functions. automatic recording, automatic analysis, and report output. 5.10.2 Linearity Meet the requirements of GB/T 16927.2 on the linearity of the impact voltage divider. 5.10.3 Step response The response time of the impact divider should not be greater than 150 ns. 5.10.4 Short-term stability During the voltage application time, the actual voltage division ratio of the impulse voltage divider does not change more than ±1%. 5.10.5 Long-term stability During the inspection period, the deviation between the actual partial pressure ratio of the impact divider and the rated partial pressure ratio should not exceed ±1%. 5.10.6 Oscillation amplitude ratio The oscillation amplitude of the impact divider near the peak value should not be greater than 5% of the peak value. 5.10.7 Measurement error The measurement error of the measurement system to the waveform does not exceed 10%. 5.10.8 Characteristic impedance of coaxial cable The characteristic impedance of the impact divider coaxial cable should be a real number and close to one of the standard values of 50 Ω and 75 Ω. 5.10.9 Anti-interference performance The measurement system should have good anti-interference ability. Under 80% of the rated output voltage, flashover occurs 3 times in the gap between the bars and the plate. The system should meet the requirements of Article 5.12 of GB/T 16927.2-2013, and the control system should not appear to crash, black screen or any other failures.

6 Test method

6.1 Visual inspection Use visual hand feel method to check the appearance, the result should meet the requirements of 5.3. 6.2 Operation check Discharge once every 90 s at a charging voltage of 100% of the rated output voltage and conduct 10 tests; at 67% of the rated output voltage Discharge once every 60 s at the charging voltage and carry out 10 tests. The results should meet the requirements of 5.4. 6.3 Output voltage waveform measurement Under 10% and 90% rated output voltage, carry out 3 tests respectively, and record the waveform and amplitude of each output voltage. respectively Output standard lightning impulse, standard operation impulse, oscillating lightning impulse, and oscillating operation impulse voltage waveform, and the result meets the requirements of 5.5. 6.4 Voltage utilization factor measurement The output end of the device is unloaded and connected to the specified load, and 10 tests are carried out at 10% and 100% of the rated output voltage respectively. Record the amplitude, waveform and charging voltage of each output voltage, and the voltage utilization factor should meet the requirements of 5.6. 6.5 Grounding inspection Check the grounding device and grounding lead visually or with tools, and the result should meet the requirements of 5.7. 6.6 Impulse voltage generator body test 6.6.1 Function check Check each function in turn, and the result meets the requirements of 5.8.1. 6.6.2 Capacitance and resistance inspection The capacitance and resistance of the capacitor are measured with corresponding instruments, and the results should meet the requirements of 5.8.2. 6.6.3 Mechanical strength test The seismic strength of the body shall be carried out according to the requirements in GB/T 2424.25, and the result shall meet the requirements of 5.8.3. 6.6.4 Insulation test The insulation test should be carried out together with the voltage utilization factor measurement, and the results should meet the requirements of 5.8.4. 6.6.5 Synchronization performance test Under the charging voltage corresponding to 10%, 50%, 75% and 90% of the rated output voltage, perform 10 ignition triggers respectively, and the total The number is 40.Record the waveform and amplitude of each output voltage, compare the waveform and amplitude of each output voltage under the same charging voltage, when a certain time The output voltage amplitude is less than (n-1)/n of the other output voltage amplitudes under the same charging voltage (n is the number of stages of the impulse voltage generator), or wave If the shapes are not the same, the test is considered to be asynchronous, and the asynchrony rate should meet the requirements of 5.8.5. During the test, the self-triggering (misoperation) and refusal of the device shall be regarded as a non-synchronization. 6.6.6 Inspection of discharge ball gap Check the maximum discharge ball gap with a measuring tool. Automatically adjust the discharge ball gap, respectively at 20%, 40%, 60%, 80% and 100% Use a tool to measure the actual ball distance under the maximum ball clearance. The result should meet the requirements of 5.8.6. 6.6.7 Inspection of grounding discharge device Check the functions of the grounding discharge device in turn, and the results meet the requirements of 5.8.7. 6.7 Control system test 6.7.1 Function check Check each function in turn on the control platform, and the result meets the requirements of 5.9.1. 6.7.2 Charging voltage check Within the charging voltage range, 5 preset charging voltages are set manually and automatically, and the impulse voltage generator body Charge, use a DC voltage measuring device with an uncertainty of at least to measure the first-stage capacitance of the impulse voltage generator body The deviation of the voltage on the voltage converter (or DC voltage divider) from the preset charging voltage value each time should meet the requirements of 5.9.2. 6.7.3 Anti-interference performance test Under 80% of the rated output voltage, flashover occurs 3 times in the gap between the rod and the plate, and the interference amplitude is measured according to 5.12 in GB/T 16927.2-2013 Article proceed. The interference performance should meet the requirements of 5.9.3. 6.8 Measurement system test 6.8.1 Function check Check each function in turn, and the result meets the requirements of 5.10.1. 6.8.2 Linearity test It was carried out in accordance with Article 5.3 of GB/T 16927.2-2013, and the result met the requirements of 5.10.2. 6.8.3 Step response test It was carried out in accordance with Article 7.8 of DL/T 1222-2013, and the results met the requirements of 5.10.3. 6.8.4 Short-term stability test According to GB/T 16927.2-2013 Article 5.5, the results meet the requirements of 5.10.4. 6.8.5 Long-term stability test According to GB/T 16927.2-2013 Clause 5.6, the result meets the requirements of 5.10.5. 6.8.6 Oscillation amplitude ratio test It was carried out in accordance with Article 7.8 of DL/T 1222-2013, and the results met the requirements of 5.10.6. 6.8.7 Measurement error test According to GB/T 16927.2-2013 8.5 and 9.5, the results meet the requirements of 5.10.7. 6.8.8 Characteristic impedance test of coaxial cable It was carried out in accordance with Article 7.5 of DL/T 1222-2013, and ...

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