A high-reliability dual-channel optical fiber system with cascaded high-voltage frequency converters
A high-voltage frequency converter and optical fiber system technology, applied in the field of high-voltage frequency converters, can solve problems such as tripping and shutdown of optical fiber communication, high reliability requirements of high-voltage frequency converters, and a large proportion of optical fiber communication failures, etc., to improve the safety and smooth operation of equipment The length of time, the effective location of the fault point, and the effect of avoiding the failure of the optical fiber channel
Active Publication Date: 2021-06-22
合肥尚锐电气有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to provide a high-reliability dual-channel optical fiber system for unit-cascaded high-voltage inverters, which solves the problem that unit-cascaded high-voltage inverters have multiple identical power units, and the power units communicate with the main controller through optical fibers; High-voltage inverters have high requirements on reliability, and they will trip and shut down when fiber optic communication fails; in the actual operation process, fiber optic communication failures account for a relatively large proportion of various failures
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[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0022] see figure 1 As shown, the present invention is a high-reliability dual-channel optical fiber system with cascaded high-voltage frequency converters. The system includes a main controller unit, a power unit, an optical fiber unit, and a circuit breaker unit. The power unit is connected to the end of the optical fiber unit , the starting end of the optical fiber unit is connected to the main controller unit, and the circuit breaker unit is set on both sides of the optical f...
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The invention discloses a high-reliability dual-channel optical fiber system with unit cascaded high-voltage frequency converters. The system includes a main controller unit, a power unit, an optical fiber unit and a circuit breaker unit. The power unit is connected to the end of the optical fiber unit, and the optical fiber unit The starting end of the fiber optic circuit is connected to the main controller unit, and the circuit breaker unit is arranged on both sides of the fiber optic unit; the present invention increases the troubleshooting of the fiber optic line through the setting of the double-row fiber optic circuit, avoiding any failure of any fiber optic path, which will cause the entire The high-voltage inverter trips and shuts down, which brings great losses to production. At the same time, the equipment cost is effectively controlled to improve the safe and stable operation of the equipment. With the use of dual-channel optical fibers, the tripping problem caused by optical fiber failures can basically be avoided.
Description
technical field [0001] The invention relates to the technical field of high-voltage frequency converters, in particular to a high-reliability dual-channel optical fiber system of unit-cascaded high-voltage frequency converters. Background technique [0002] High-voltage frequency converters have a large market share and are widely used in industries such as cement, electric power, metallurgy, chemical industry, water affairs, environmental protection, papermaking, mining, and municipal water supply. The working environment is relatively poor, especially in industries such as cement, metallurgy, chemical industry, and mining. Due to the complex technology and structure of high-voltage frequency converters, the failure rate of the equipment is relatively high after several years of operation. The high-voltage motors driven by high-voltage frequency conversion are generally more important fans and pumps, which require continuous operation. The power unit communicates one-to-on...
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IPC IPC(8): H02M1/092
CPCH02M1/092
Inventor 马国良
Owner 合肥尚锐电气有限公司