CN201926695U

CN201926695U - Arrester action current amplitude monitor

Info

Publication number: CN201926695U
Application number: CN2010206618170U
Authority: CN
Inventors: 孙晶云; 李朝晖
Original assignee: NANJING DERUN ELECTRIC CO Ltd
Current assignee: NANJING DERUN ELECTRIC CO Ltd
Priority date: 2010-12-15
Filing date: 2010-12-15
Publication date: 2011-08-10
Anticipated expiration: 2020-12-15

Abstract

The utility model discloses an arrester action current amplitude monitor, which comprises an action counting sensor, a counting/triggering circuit, a data output interface circuit, a voltage reference circuit, a singlechip, a display and a power source, wherein the action counting sensor is connected with the counting/triggering circuit, the counting/triggering circuit is output to an interface of the singlechip, the singlechip outputs signals to the data output interface circuit, the singlechip is connected with the voltage reference circuit and the display, and the power source provides the working power source for the monitor. The monitor also comprises a thunder and light amplitude sensor and a passive integrating circuit, wherein the thunder and light amplitude sensor is connected with the passive integration circuit, and the passive integration circuit is output to the interface of the singlechip. The arrester action current amplitude monitor disclosed by the utility model has a small size and low power consumption, is easy to carry and install, can be used for monitoring the action counting, the action current amplitude and other operation conditions of a circuit arrester in real time, and remotely transmitting the monitored data to a monitoring center on duty wirelessly at any time.

Description

Lightning arrester action current amplitude monitor

Technical field

The utility model belongs to the electric equipment protection field, relates to a kind of lightning arrester on-line monitoring device, relates in particular to a kind of monitor with action current amplitude measurement function.

Background technology

The on-line monitoring technique of transmission line of electricity lightning arrester has developed a lot of years, and the monitored operational factor of lightning arrester mainly contains action frequency, leakage current, surface filth degree etc.At present, there are the devices such as surveying instrument instrument of some amplitude of lightning current to carry out tracking measurement to equipment such as lightning rod, power station lightning arresters, but, be not suitable for being used in the on-line monitoring work of transmission line of electricity lightning arrester because these lightning current measuring device volumes are big, power consumption is many, manufacturing cost is high.

Summary of the invention

The utility model provides a kind of lightning arrester action current amplitude monitor that remedies the deficiency on the leakage conductor on-line monitoring.

The technical solution adopted in the utility model is: lightning arrester action current amplitude monitor, comprise action sensor for countering, counting/trigger circuit, data output interface circuit, voltage reference circuit, single-chip microcomputer, display, power supply, action numeration sensor is connected with counting/trigger circuit, counting/trigger circuit output to the interface of single-chip microcomputer, the single-chip microcomputer output signal is to data output interface circuit, single-chip microcomputer links to each other with voltage reference circuit, display, and power supply provides working power for monitor; Also comprise thunder and lightning amplitude sensor and passive integrator, thunder and lightning amplitude sensor is connected with passive integrator, and passive integrator outputs to the interface of single-chip microcomputer.

As optimal technical scheme of the present utility model, described passive integrator carries out full-wave rectification by rectifier bridge B1, and carry out Integral Processing by capacitor C 1, the two ends that capacitor C 1 is received in the both positive and negative polarity output of B1 respectively, the upper end of divider resistance R1 is connected with the positive pole of capacitor C 1, the lower end of divider resistance R2 is connected with capacitor C 1 negative pole, and the other end of divider resistance R1, R2 links to each other.

Lightning arrester action current amplitude monitor volume of the present utility model is little, power consumption is low, it is simple and easy to carry and install, ruuning situations such as the action counting of Monitoring Line lightning arrester, action current amplitude in real time, and at any time with the Monitoring Data wireless remote transmission to Surveillance center on duty.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the schematic diagram of passive integrator in the utility model.

Fig. 3 is the utility model work synoptic diagram.

Embodiment

Now specify embodiment of the present utility model in conjunction with the accompanying drawings.

The lightning arrester on-Line Monitor Device, have three lightning arrester action current amplitude monitors 3, data cable 4, teletransmission device 5, back-end data reception MODEM6, PC 7, lightning arrester 1 is connected respectively with A, B, the C three-phase of transmission line of electricity, be connected respectively to upper linker of action current amplitude monitor 3 by outside lead 2, monitor 3 lower terminal link to each other with the earth, monitor 3 Monitoring Data are connected respectively to three interfaces of teletransmission device 5 by data cable 4, and the output terminal that back-end data receives MODEM6 is connected with PC 7.The data that the teletransmission device is sent monitor send to the back-end data receiving system by the GSM network wireless.

When lightning arrester has action to produce, action current is by outside lead and the monitor internal connection line the earth of releasing, two current sensors have been worn on the internal connection line, be respectively action counting/triggering sensor 11 and amplitude of lightning current sensor 12, action numeration/triggering sensor 11 is a toroidal iron core coil CT1, the lightning induction electric current is input to counting/trigger circuit 13, counting/trigger circuit 13 carry out filtering, shaping, output pulse signal P1 is to the counting/trigger interface of single-chip microcomputer 15, cumulative process is once counted in 15 pairs of lightning arrester actions of single-chip microcomputer, count value outputs on the display screen 18 and shows, simultaneously, the A/D change-over circuit of triggering single-chip microcomputer 15 inside enters duty; Amplitude of lightning current sensor 12 is Luo-coil CT2, the lightning current induced signal of output is in passive integrator 14, after 14 pairs of lightning current output signals of passive integrator are handled, output thunder and lightning amplitude measurement signal P2 is to the A/D translation interface of single-chip microcomputer 15, single-chip microcomputer 15 is according to voltage reference circuit 17, meter is calculated thunder and lightning amplitude data, and by data output interface circuit 16, lightning arrester action enumeration data and thunder and lightning amplitude measurement data are sent in the teletransmission device, the teletransmission device re-sends to these data on the PC receiving terminal of backstage, and power supply 19 provides working power for monitor.

Luo-coil CT2 output lightning current induced signal, carry out full-wave rectification through rectifier bridge B1, and carry out Integral Processing by C1, two ends of C1 are received in the both positive and negative polarity output of B1 respectively, the positive pole of C1 connects the upper end of divider resistance R1, negative pole connects the lower end of divider resistance R2, and the other end of divider resistance R1, R2 is connected, and output is measured voltage division signal P2 to Chip Microcomputer A/D translation interface.

Claims

1. lightning arrester action current amplitude monitor, comprise action sensor for countering (11), counting/trigger circuit (13), data output interface circuit (16), voltage reference circuit (17), single-chip microcomputer (15), display (18), power supply (19), action numeration sensor (11) is connected with counting/trigger circuit (13), counting/trigger circuit (13) output to the interface of single-chip microcomputer (15), single-chip microcomputer (15) output signal is to data output interface circuit (16), single-chip microcomputer (15) and voltage reference circuit (17), display (18) links to each other, and power supply (19) provides working power for monitor; It is characterized in that: also comprise thunder and lightning amplitude sensor (12) and passive integrator (14), thunder and lightning amplitude sensor (12) is connected with passive integrator (14), and passive integrator (14) outputs to the interface of single-chip microcomputer (15).

2. lightning arrester action current amplitude monitor according to claim 1, it is characterized in that: described passive integrator carries out full-wave rectification by rectifier bridge B1, and carry out Integral Processing by capacitor C 1, the two ends that capacitor C 1 is received in the both positive and negative polarity output of B1 respectively, the upper end of divider resistance R1 is connected with the positive pole of capacitor C 1, the lower end of divider resistance R2 is connected with capacitor C 1 negative pole, and the other end of divider resistance R1, R2 links to each other.