Power supply line breaking protection and alarm system and device thereof

Abstract

The invention discloses a power supply line breaking protection and alarm system and a device thereof. The system consist of a current leakage generation device (3), a voice player (2), a current leakage breaker (1), a current leakage grounding device (4), a wireless alarm extension (5), an alarm electric bell (6), a wireless receiving alarm mainframe (7), an online computer (8) and a siren horn (9), wherein the current leakage generation device (3) consists of an under-voltage release and a current leakage mechanism; the under-voltage release consists of a coil (15), an iron core (18), a shell (20), an ejection spring (16) and an insulated plate (17); and the current leakage mechanism consists of a movable connecting rod (22) and a lock catch plate (21). The automatic design of the invention greatly improves the service life and the reliability, effectively maintains the safety of electric grid power supply and avoids the phenomenon that broken line electrification damages the life and property of people. The invention has precise design, convenient maintenance and low cost, and is suitable to be used in power supply lines.

Description

Technical field: [0001] The invention relates to a power supply line disconnection protection alarm system and a device thereof. Background technique: [0002] Due to various reasons such as natural disasters and man-made theft of line equipment, the disconnection of the power supply line of the power grid occurs from time to time, which poses a serious threat to the safety of people's lives and property. This technical problem has not been effectively solved so far; Due to the disconnection of the neutral wire (ground wire) of the power supply line, the current of the 380V live wire flowed back, resulting in the burning of 62 household appliances at one time, and the disconnection of the power supply line was hung in the field, causing one cattle and three laborers in a certain place at one time. Major accidents involving death; motor and electrical appliances are burned due to lack of phase in the line, which is a frequent accident. [0003] At present, the residual curre...

AI Technical Summary

Problems solved by technology

[0002] Due to various reasons such as natural disasters and man-made theft of line equipment, the disconnection of the power supply line of the power grid occurs from time to time, which poses a serious threat to the safety of people's lives and property. This technical problem has not been effectively solved so far; Due to the disconnection of the neutral wire (ground wire) of the power supply line, the current of the 380V live wire flowed back, resulting in the burning of 62 household appliances at one time, and the disconnection of the power supply line was hung in the field, causing one cattle and three laborers in a certain place at one time. Fatal accidents; due to the lack of phase of the line, the incident of burning motors and electrical appliances is a frequent accident

[0003] At present, the residual current operated circuit breaker (leakage circuit breaker) digital microcomputer intelligent circuit breaker, phase loss and voltage loss circuit breaker, which are generally used at present, can only be opened for protection when the switch incoming line terminal is out of phase; the intelligent leakage circuit breaker and ordinary Leakage circuit breakers can only be partially opened for protection when people and animals are injured by electric shock. It is a passive protection behavior, but they cannot be opened for all disconnected states. Under certain conditions, it can still cause death or disability; if the line breaks and does not fall to the ground, or the insulation performance of the landing point is better, there will be no power-off protection, and the existing technology N line (zero line, ground line) Line) disconnection is absolutely impossible to protect, the N line disconnection causes burning of home appliances incidents happen from time to time

[0004] Chinese patent application number 200710070725.8 discloses a "power line disconnection protection multi-level switch system", which is installed on a three-phase four-wire power line and a centralized manager A with three-phase carrier communication function installed on the three-phase line , primary switch K 1-n Composing the system center, the microprocessor M with single-phase carrier communication function installed on the single-phase line and the secondary switch QF form the end of the system, and the communication link between the center and the end of the system is established through the power line; the system can only be protected in sections , the cost is too high

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