CN2388604Y

CN2388604Y - Switchhouse power fault radio paging alarm device

Info

Publication number: CN2388604Y
Application number: CN 99213057
Authority: CN
Inventors: 陆占平; 李尧波; 苗卫平
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-06-08
Filing date: 1999-06-08
Publication date: 2000-07-19
Anticipated expiration: 2009-06-08

Abstract

The utility model relates to a distribution room fault radio paging alarm device which is suitable for the use in an unattended operation distribution room in industrial and mining establishments and countryside. The utility model comprises a high voltage phase lacking testing circuit, a dynamic electricity phase lacking testing circuit, a lighting electricity phase lacking testing circuit, a display circuit, an emission control circuit, a radio paging emitter and a radio paging receiver. When electric power open phase fault happens, the radio paging to an electrician can be realized, faults can be removed in time, electrical equipment damage can be avoided, paging alarms can be sent to a block electric supply center simultaneously, and management and supervision can be easily realized.

Description

Switchgear building power failure radio call warning device

The utility model relates to electrical, particularly refers to switchgear building power failure detection alarm device.

At present, unattended switchgear building, in the rural area, be located at the field mostly especially, when power distribution equipment breaks down, as high-low pressure blown fuse, leakage tripping, the phase failure etc., because unmanned often can not in time be found, in time fixes a breakdown, cause because of open-phase running burns out motor and line outage etc., cause damage and live inconvenience to the user.

The goal of the invention of the utility model, be to remedy the deficiency of prior art, a kind of switchgear building power failure radio call warning device is provided, when distribution fault takes place when, paging is in time in time fixed a breakdown to managerial personnel, so simultaneously, also can send calling alarm, so that supervision and management to the district management center.

Its technical scheme of the utility model is, it comprises high pressure open-phase detection circuit (1), power electricity open-phase detection circuit (2), power for illumination open-phase detection circuit (3), direct supply (7), wireless transmission and receiving circuit, be characterised in that, high pressure open-phase detection circuit (1), comprise being connected to the star sample circuit that A, B, C three-phase are made of resistance R 1, R2, R3 respectively, its output connects regulator rectifier circuit, Sheffer stroke gate F1, F2 and display circuit successively; Power electricity open-phase detection circuit (2), comprise the mutual inductor sample circuit that is connected to A, B, C three-phase respectively, connect regulator rectifier circuit respectively, its output terminal, one the tunnel connects rejection gate F3, F4, F5 and display circuit respectively, another road respectively and connect the input end of Sheffer stroke gate F6, rejection gate F9 and constitutes the fault distinguishing circuit by gate circuit F6, F7, F9, F10; Power for illumination open-phase detection circuit (3), comprise the resistance R 7, R8, the R9 sample circuit that are connected to a, b, c three-phase respectively, connect regulator rectifier circuit respectively, its output terminal, one the tunnel connects rejection gate F11, F12, F13 and display circuit respectively, another road respectively and connect the input end of Sheffer stroke gate F14, rejection gate F16 and constitutes the fault distinguishing circuit by gate circuit F14, F15, F16, F17; Between above-mentioned testing circuit and the wireless transmission circuit, countdown circuit (4) is arranged, comprise Sheffer stroke gate F18 and be attached thereto the BG1 switch amplifying circuit that connects, the M of F18, G, E input end connect the F1 output terminal of high pressure open-phase detection circuit (1), the F7 output terminal of power electricity open-phase detection circuit (2), the F15 output terminal of power for illumination open-phase detection circuit (3) respectively; Described wireless transmission, receiving circuit are radio communication transmitter and radio paging receiver.

Description of drawings

Fig. 1 the utility model electricity theory diagram

Fig. 2 the utility model electrical schematic diagram

The structure and the principle of work of the utility model below are described in detail in detail:

As shown in Figure 1, 2, transformer B reduces to high pressure 380V power electricity and constitutes 220V three-phase four-wire power supply circuit, if be used to detect the high pressure open-phase detection circuit (1) of high-pressure side blown fuse, be used to detect the testing circuit (2) of the 380V power electricity phase failure, be used to detect the testing circuit (3) of the 220V power for illumination phase failure.High pressure open-phase detection circuit (1), by be connected to A, B, the resistance R 1 of C three-phase respectively, R2, R3 constitute the star sample circuit, form star node L, export the D1W1D2C1 rectification filtering voltage stabilizing circuit to, export Sheffer stroke gate F1, F2 again to pilot lamp LED1, the output of F1 simultaneously also and receive the F18 input end of countdown circuit (4), when the high-pressure side just often, neutral point L above earth potential is zero, then F1 is input as 0 and is output as 1, F2 is output as 0, and LDE does not work, non-fault; When the high pressure generation phase failure, B corresponding phase of level of transformer, its voltage will drop to the 40-60% of rated voltage, then L point above earth potential will obviously rise, and make F1 be output as 0, and F2 is output as 1, the LDE1 lamp is bright, indication has fault, and simultaneously, F18 output terminal H is 1, make the BG1 conducting, transmitter supply is connected in the K3 action, emission paging code and format signal, and the electrician who carries paging receiver will receive paging, promptly go to handle fault, simultaneously, paging signal will make the pager of the regional power-management centre of identical address coding receive, so that to the management that exercises supervision of each power distribution equipment.

Power electricity open-phase detection circuit (2), comprise and be connected to A, B, the mutual inductor CT1 of C three-phase, CT2, CT3, connect D3D6 respectively, D4D7, the D5D8 rectification filtering voltage stabilizing circuit, three output end of pressure-stabilizing P, Q, S, two tunnel outputs in parallel are respectively arranged, one the tunnel connects fault display circuit, is respectively F3LED2, F4LED3, F5LED4, another road connects the fault judgement circuit, it is by gate circuit F6, F7, F9, F10 constitutes, its input end parallel connection of Sheffer stroke gate F6 and rejection gate F9, the output G end of this fault distinguishing circuit is as display circuit rejection gate F3, F4, the input end of F5, simultaneously, again as input end of F18 of countdown circuit (4), below divide three kinds of situation analysis principle of work, (A) when the power electricity does not close a floodgate, the non-inductive voltage of mutual inductor, P, Q, S three ends are 0, F6 is output as 1, and F9 is output as 1, and F10 is output as 0, F7 output G point is 1, rejection gate F3 then, F4, F5 output is 0, three road pilot lamp and does not all work non-fault.(B) when the power electricity closes a floodgate the not phase failure, three mutual inductors have induced voltage, and P, Q, S three ends are noble potential, and F6 is output as 0, F9 is output as 0, and F10 is output as 1, and F7 output G point is 1, then rejection gate F3, F4, F5 output are 0, the three tunnel and all do not show non-fault.(C) when a certain phase phase failure, disconnected mutually as A, then the P end is 0; Q; the S end is noble potential (being 1), and then F6 is output as 1, and F9 is output as 0; F10 is output as 1, and F7 output G point is 0, and then rejection gate F3 is output as 1; LED2 is bright, shows that A is disconnected mutually, rejection gate F4; F5 output still is 0; do not show that F18 will export 1 simultaneously, make the BG1 conducting; the K3 action, K3-1 adhesive, radiating circuit power supply; emission calling alarm signal; to export 1 with the F8 that F7 output is connected this moment, make the BG2 conducting, the K4 action; K4-1 disconnects; remove contactor CT self-insurance, stop the power power supply, realize the motor open-phase protection.Power for illumination open-phase detection circuit (3), except that mutual inductor being changed into three resistance R 7, R8, R9, its circuit formation of surplus person and principle of work and power electricity open-phase detection circuit are identical.

Wireless transmit that the utility model adopted and receiving circuit adopt existing radio paging technology, use international POCSAG paging code and format, (5) are coding circuit in the accompanying drawing, (6) be radiating circuit, (7) are power supply, and (8) are receiving circuit, (9) be decoding circuit, (10) be display circuit, (8 ') (9 ') (10 ') is respectively the reception of regional center paging receiver, decoding, display circuit.

The utility model divides fault coverage into high pressure, power electricity, power for illumination three kinds, can more comprehensively reflect switchgear building power failure situation, adopts radio call to report to the police, and simplified equipment is convenient, fast.

Claims

1, switchgear building power failure radio call warning device comprises high pressure open-phase detection circuit (1), power electricity open-phase detection circuit (2), power for illumination open-phase detection circuit (3), and direct supply (7), wireless transmission and receiving circuit is characterized in that:

High pressure open-phase detection circuit (1) comprises being connected to the star sample circuit that A, B, C three-phase are made of resistance R 1, R2, R3 respectively that its output connects regulator rectifier circuit, Sheffer stroke gate F1, F2 and display circuit successively;

Power electricity open-phase detection circuit (2), comprise the mutual inductor sample circuit that is connected to A, B, C three-phase respectively, connect regulator rectifier circuit respectively, its output terminal, one the tunnel connects rejection gate F3, F4, F5 and display circuit respectively, another road respectively and connect the input end of Sheffer stroke gate F6, rejection gate F9 and constitutes the fault distinguishing circuit by gate circuit F6, F7, F9, F10;

Power for illumination open-phase detection circuit (3), comprise the resistance R 7, R8, the R9 sample circuit that insert a, b, c three-phase respectively, connect regulator rectifier circuit respectively, its output terminal, one the tunnel connects rejection gate F11, F12, F13 and display circuit respectively, another road respectively and connect the input end of Sheffer stroke gate F14 rejection gate F16 and constitutes the fault distinguishing circuit by gate circuit F14, F15, F16, F17;

Countdown circuit (4) is arranged between above-mentioned testing circuit and the wireless transmission circuit, comprise Sheffer stroke gate F18 and be attached thereto the BG1 switch amplifying circuit that connects, the M of F18, G, E input end connect the F1 output terminal of high pressure open-phase detection circuit (1), the F7 output terminal of power electricity open-phase detection circuit (2), the F15 output terminal of power for illumination open-phase detection circuit (3) respectively;

Described wireless transmission, receiving circuit are radio communication transmitter and radio paging receiver.