The lightning impulse voltage generator test device plays an important role in multiple key fields, and its core application scenarios and technical value are reflected in the following aspects:
1. Power system equipment testing
① Verification of insulation performance of high-voltage equipment
a. Application objects: Transformers GIS、 High voltage cables, insulators, etc.
b. Test content: Simulate lightning impulse voltage (such as 1.2/50 μ s waveform), evaluate equipment insulation margin, and ensure that it can withstand transient overvoltage.
c. Typical case: A certain ultra-high voltage substation uses a 2400kV lightning impulse generator to conduct full wave and cutoff tests on a ± 1100kV converter transformer, verifying that its insulation strength meets the IEC 60076-3 standard.
② Performance evaluation of lightning arrester
a. Test focus: Measure the residual voltage, operating characteristics, and lightning impulse current tolerance of the lightning arrester (such as 10kA impulse current under 8/20 μ s waveform).
b. Technical value: Ensure the reliability of insulation coordination between lightning arresters and protected equipment, with residual voltage measurement accuracy of ± 1%.
2. In the field of new energy and rail transit
① Lightning protection testing for wind/photovoltaic equipment
a. Application objects: Wind turbine inverter, photovoltaic inverter, combiner box.
b. Test requirement: Verify the lightning resistance of the equipment in complex electromagnetic environments, such as offshore wind farms that meet the IEC 61400-24 standard.
c. Innovative application: A certain enterprise uses a lightning impulse generator in combination with a salt spray test chamber to simulate the corrosion environment caused by lightning strikes in marine climate and optimize equipment protection design.
② Verification of High Voltage Components in Rail Transit Vehicles
a. Test objects: high-speed rail pantographs, traction transformers, and contact network insulators.
b. Test focus: Evaluate the insulation performance of vehicles under lightning strikes (such as the 25kV overhead contact system needing to withstand 170kV lightning strikes), and verify the rapid response capability of onboard lightning arresters (response time<100ns).
3. Reliability assurance of electronic and communication equipment
① Lightning protection testing for data centers and communication base stations
a. Application objects: server power module, communication base station antenna, optical cable terminal box.
b. Test standard: Meet GR-1089 (Electromagnetic Compatibility Standard for Telecommunications Equipment) or YD/T 993 (Lightning Protection Standard for Communication Stations), and the test ports include power lines, signal lines, grounding wires, etc.
c. Technical difficulty: It is necessary to accurately control the amplitude of the impulse voltage within microseconds (such as ± 1% accuracy) to avoid misjudging equipment failure.
② EMC verification for consumer electronics and automotive electronics
a. Application objects: electric vehicle charging stations, on-board chargers (OBC), 5G base station equipment.
b. Test scenario: The charging station needs to pass the ± 15kV air discharge and ± 8kV contact discharge tests (IEC 61000-4-2), and the automotive electronics need to simulate the impact of lightning electromagnetic pulse (LEMP) on CAN bus and Ethernet.
c. Data value: Through lightning impulse testing, it was found that a certain brand of charging station experienced communication interruption under 12kV contact discharge, and the failure rate was reduced by 90% after optimization.
4. Aerospace and Military Industries
① Lightning protection verification for aviation electronic equipment
a. Application objects: Aircraft fuel system sensors, onboard radar, satellite communication equipment.
b. Test standard: Meet RTCA DO-160 Section 22 "Indirect Effects of Lightning", simulate the impact of lightning channel current (200kA peak) on equipment.
c. Technological breakthrough: A certain aerospace company uses a lightning impulse generator in combination with a high and low temperature box to test the lightning resistance of satellite equipment under extreme temperatures of -180 ℃~+125 ℃.
② Lightning resistance test of ship electronic system
a. Application objects: shipborne radar, communication and navigation systems, electric propulsion devices.
b. Test focus: Evaluate the common mode interference suppression capability of the equipment in complex electromagnetic environments, and verify the discharge efficiency of the grounding system against lightning strikes.
c. Industry significance: Enhancing the combat survival capability of ships in thunderstorm weather.
5. Research and third-party testing services
① Research and development of new insulation materials
a. Application scenario: Testing the lightning impulse resistance of nanocomposite insulation materials and high-temperature superconducting materials, analyzing the relationship between material breakdown characteristics and microstructure.
b. Technical means: Combining high-speed cameras (frame rate>10 ⁶ fps) with infrared thermal imaging to capture the arc development and local temperature rise at the moment of breakdown.
② Third party testing and certification
a. Service targets: power equipment manufacturers, new energy enterprises, and military units.
b. Value proposition: Providing authoritative testing reports and shortening the product launch cycle.
The ZCCJ-800kV/80kJ impulse voltage generator adopts a four column H structure, with a steel bracket consisting of a single flange and a parallel external single capacitor, forming a stable structure consisting of one stage. The main equipment is of 8 levels, forming a combined tower structure, with each level stacked step by step for easy disassembly and maintenance, and the overall structure is stable.
This set of equipment is mainly designed to meet the lightning full wave and steep wave waveform tests of electrical equipment such as power insulators.The basic configuration of the equipment includes a charging device, an impulse voltage generator body, a weak damping capacitor voltage divider, a steep wave device, a fast resistor voltage divider, and other control and measurement devices.
Kvtester Electronics Technology Co.,Ltd. is a high-tech enterprise specializing in power testing, testing, research and development, production, and sales of testing equipment. It has been engaged in the electrical testing industry for many years, and its products are of high quality. We welcome customers to come and purchase. Service hotline: 0086-27-81778799, to learn more, visit the official website: www.kvtester.com
