All measures to improve the reliability of conventional DC transmission are still effective for improving the reliability of UHVDC transmission and should be further strengthened. It mainly includes: reducing the failure rate of the component parts; adopting a reasonable structure design, such as modularization, openness, etc.; widely adopting the concepts of redundancy, such as control protection systems, parallel redundancy of water cooling systems, and serial redundancy of thyristors; Strengthen equipment status monitoring and equipment self-test functions.
In view of the problems existing in conventional DC projects, such as station power systems that have led to DC system pole or bipolar outages, transformer protection relays, faults in DC protection system units, and other weak links in UHVDC transmission systems. Design and construction will take measures to improve. In addition, the training of operation and maintenance personnel will also be strengthened and the replacement of wearing parts will be appropriately increased.
To increase the reliability of UHV DC transmission projects, it is also possible to ensure that each inverter between each pole and between each pole is maximally independent from each other in terms of design principles, so as to avoid mutual fault transmission. Apart from the main loop, its independence also needs to be considered: valve hall layout, power supply system, water supply system, cable trench, control protection system, etc.
Shanghai Miyuan Electric Co., Ltd. produces and sells the following products: ZGF DC high voltage generator, high voltage voice phasor, DC resistance tester, battery load tester, loop resistance tester, microcomputer relay protection tester, grounding resistance Tester, high-voltage wireless nuclear phase analyzer, high-voltage test transformer, DC single-arm double bridge, DC high-voltage generator, tubular electric heater, dielectric oil dielectric strength tester, watch-type near-electricity alarm, zinc oxide arrester tester , Insulation Resistance Tester, High Voltage Megaohmmeter, High Voltage Insulation Mat, Short Circuit Grounding Cable; Portable Dynamic Balance Measuring Instrument, On-the-Spot Dynamic Balance Measuring Instrument, Long Range Infrared Thermometer, High Voltage Insulation Mat in Distribution Room, Transformer Loss Parameter Intelligent Test Instrument, insulation boots gloves pressure test device, transformer characteristics integrated test bench, tie rod flow meter, ultra high voltage withstand tester, three-phase multi-phase volt ammeter, intelligent dielectric loss tester, intelligent loop resistance tester, Lightning counter calibrator, transformer on-load switch parameter tester, mine cable fault detector, zinc oxide arrester detector, dip In-line tubular electric heater, DC resistance meter, digital ground resistance meter, portable digital vibration meter, infrared thermometer, frequency conversion series resonant test device, high current generator, vacuum oil filter manufacturer, voltage resistance tester, Wireless high-voltage nuclear phase meter and so on.
Eco Solvent Inkjet Coating For Canvas
Eco Solvent Inkjet Coating For Canvas,Canvas Fabric ,Canvas Material ,Cotton Canvas Fabric
Guangzhou Quanxu Technology Co Ltd , https://www.skysilmattingagent.com