CN203643552U - Digital fault indicator for power distribution network - Google Patents
Digital fault indicator for power distribution network Download PDFInfo
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- CN203643552U CN203643552U CN201320866938.2U CN201320866938U CN203643552U CN 203643552 U CN203643552 U CN 203643552U CN 201320866938 U CN201320866938 U CN 201320866938U CN 203643552 U CN203643552 U CN 203643552U
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Abstract
The utility model can be applied to a system which can quickly position and indicate a fault point when a power distribution network line fails, and particularly relates to a digital fault indicator for a power distribution network. The digital fault indicator for a power distribution network comprises a rectifier direct current filter circuit, a power conversion circuit, a main control screen monitoring system, an operation power supply unit, a control power supply unit, a computation power supply unit, a working power supply unit, a communication power supply unit, an operation power supply monitoring circuit, a control power supply monitoring circuit, a computation power supply monitoring circuit, a working power supply monitoring circuit and a communication power supply monitoring circuit. According to the digital fault indicator for power distribution network, intelligent power distribution network monitoring and management can be improved, and operation of the power distribution network is safer, more reliable, economic, high-quality and high-efficiency; functions are complete, the ratio of performance to price is high, the operation of the main control screen monitoring system is convenient, safe and reliable, the monitoring real-time performance is high, and the use and the maintenance are convenient and high-efficiency.
Description
Technical field
When the utility model is applicable to distribution network line and breaks down, can position and the system of indicating its trouble spot fast, be specifically related to a kind of power distribution network digital fault indicator.
Background technology
Power distribution network is contacted directly user, and its reliable power supply capacity and power supply quality are the direct embodiment of electric power enterprise economic benefit, have again immeasurable social benefit.If overhead transmission line breaks down in distribution, often, by the method investigation fault of artificial line walking, time and effort consuming is very inconvenient, and power supply reliability also cannot be protected.Therefore, distribution network failure automatically location, as an important content of power distribution automation, has a significant impact improving power supply reliability, has also obtained increasing attention.
Existing electric system fault indicator for overhead lines generally only has the effect that detects short circuit or ground current, indicating fault is provided, therefore can only only rely on single current signal to differentiate singlephase earth fault, reliability is very low, and more than 70% fault of overhead transmission line is single-phase earthing, existing fault detector can not ensure that power distribution network is safe and reliable, and economic efficacy is poor.
Utility model content
In order to address the above problem, the utility model provides a kind of power distribution network digital fault indicator, and this power distribution network digital fault indicator can.
A kind of power distribution network digital fault indicator, comprises rectification DC filtering circuit, power-switching circuit, master-control panel monitoring system, operating power unit, controls power supply unit, computing power supply unit, working power unit, communication power supply unit, operating power observation circuit, control electric source monitoring circuit, computing electric source monitoring circuit, working power observation circuit and communication power supply observation circuit;
The power input of described rectification DC filtering circuit is connected in AC220V, and the power output end of described rectification DC filtering circuit is connected in the second source input end of described power-switching circuit; The power output end of described power-switching circuit is connected in the power input of the first power input of described master-control panel monitoring system, the power input of described operating power unit, the power input of described control power supply unit, the power input of described computing power supply unit, described working power unit and the power input of described communication power supply unit;
The power output end of described operating power unit is connected in described operating power observation circuit, the power output end of described control power supply unit is connected in described control electric source monitoring circuit, the power output end of described computing power supply is connected in described computing electric source monitoring circuit, the power output end of described working power unit is connected in described working power observation circuit, and the power output end of described communication power supply unit is connected in described communication power supply observation circuit; The monitoring output of described operating power observation circuit, the monitoring output of described control electric source monitoring circuit, the monitoring output of described computing electric source monitoring circuit, the monitoring output of described working power observation circuit and the monitoring output of described communication power supply observation circuit are connected in the monitor input terminal of described master-control panel monitoring system.
Wherein, before described rectification DC filtering circuit, be also provided with power supply input lightning protection ac filter circuit, the power input of described power supply input lightning protection ac filter circuit is connected in AC220V, and the power output end of described power supply input lightning protection ac filter circuit is connected in the power input of described rectification DC filtering circuit and the first power input of power-switching circuit.
Wherein, also comprise battery set charge/discharge circuit, the first power input of described battery set charge/discharge circuit is connected in the output terminal of described power supply input lightning protection ac filter circuit, the second source input end of described battery set charge/discharge circuit is connected in the output terminal of described power-switching circuit, the first power output end of described battery set charge/discharge circuit is connected in the second source input end of described master-control panel monitoring system, the second source output terminal of described battery set charge/discharge circuit is connected in the power input of described operating power unit, the power input of described control power supply unit, the power input of described computing power supply unit, the power input of the power input of described working power unit and described communication power supply unit.
Wherein, described power supply input lightning protection ac filter circuit comprises: lightning protection device F1, F2 and F3, voltage dependent resistor (VDR) MOV1, MOV2 and MOV3, discharge tube FDG, resistance R 1 and R2, capacitor C 1, C2, C3 and C4, and inductance L 1 and L2; F2, MOV1, MOV2 and F3 are series between live wire L and zero line N successively; FDG one end is connected in MOV1 and MOV2, other end ground connection; The F1 line L that starts to exchange fire one end, one end of another termination MOV3, C1, C2, C3, R1, L1 and L2, another terminal connecting zero line N of MOV3, C1, C2, L1 and L2, one end of another termination C4 of C3 and circuit potential reference point GND, another terminal connecting zero line N of C4, one end of another termination R2 of R1, another terminal connecting zero line N of R2.
Wherein, described rectification DC filtering circuit comprises: capacitor C 5, C6, C7, C8, C9, C10, C11, C12, C13, diode D1, D2, D3 and D4, and inductance L 3; C5 one end connecting circuit potential reference point GND, the other end connects C6, C7, C10, C11, C12 and one end of C13 and the positive pole of D1, D3; The C6 other end connects D1 negative pole, one end of C8 and the positive pole of D2, and the C7 other end connects D3 negative pole, one end of C9 and the positive pole of D4; The other end of the other end of C8, the negative pole of D2, C9, the negative pole of D4 are connected in the other end of one end of L3, C10 and C11; The other end of L3 is connected in the other end of C12 and C13.
Wherein, described power-switching circuit comprises stabilivolt VZ1 and VZ2, diode VD1, VD2 and VD3, transistor I C1 and light lotus root IC2, transformer T1, resistance R 3, R4 and R5, inductance L 4, and capacitor C 14, C15, C16, C17, C18 and C19; VZ1 positive pole is connected in one end of the positive pole of power output end and the primary coil of T1 of described rectification DC filtering circuit, and the negative pole of VZ1 is connected in the negative pole of VD1, and the positive pole of VD1 is connected in the other end of primary coil and the D pin of IC1 of T1; The S pin of IC1 is connected in the negative pole of the power output end of described rectification DC filtering circuit, one end of C17, one end of C16, one end of second subprime coil and one end of C18 of T1, and the G pin of IC1 is connected in one end of R3 and the 3rd pin of IC2; The other end of R3 is connected in the other end of C17; The other end of C16 is connected in the negative pole of VD3 and the 1st pin of IC2, and the positive pole of VD3 is connected in the other end of the second subprime coil of T1; The other end of C18 is connected in one end of C14, and the other end of C14 is connected in one end of one end, R4 and the R5 of the negative pole of VD2, L4, and the other end of R4 is connected in the 2nd pin of IC2; The positive pole of VD2 is connected in one end of the first secondary coil of T1, and the other end of the first secondary coil of T1 is connected in the negative pole of the power output end of described power transfer module; The other end of L4 is connected in the negative pole of one end of C15 and the power output end of described power transfer module, and the other end of C15 is connected in one end of C19 and the positive pole of VZ2; The other end of the other end, VZ2 negative pole and the R5 of C19 is connected in the 4th pin of IC2.
Wherein, described operating power observation circuit, control electric source monitoring circuit, computing electric source monitoring circuit, working power observation circuit and communication power supply observation circuit include voltage transformer (VT) ZMPT101, current transformer ZMCT101, operational amplifier 1/4LM324, diode IN4148 and integrated circuit 7333Q; The two ends of the secondary coil of ZMPT101 and ZMCT101 are connected to positive input and the reverse input end of 1/4LM324, between the reverse input end of 1/4LM324 and output terminal, be connected with 750 Ω resistance, the output terminal of 1/4LM324 is connected in one end of 1K Ω resistance, the other end of described 1K Ω resistance is connected in positive pole, the negative pole of another IN4148 and one end of a 103J electric capacity of an IN4148, the other end ground connection of the negative pole of a described IN4148 and 103J electric capacity, connect+3.3V of the positive pole of described another IN4148; The 1st pin of 7333Q is connected in one end of VDD0 and a 249K Ω resistance, the 2nd, the 3 and 4 be connected in+3.3V of pin of 7333Q and the other end of described 249K Ω resistance, the 5th and 6 pins of 7333Q are connected in circuit voltage reference point GND, the 7th and 8 be connected in+5V of pin of 7333Q.
Wherein, described master-control panel monitoring system comprises microcontroller SAB80C535, trigger SL74HC573 and program storage EEPROM, the data terminal of SAB80C535 is connected with SL74HC573 with EEPROM respectively, and the input end of EEPROM is connected with SL74HC573 respectively with output terminal.
Wherein, described operating power observation circuit, control electric source monitoring circuit, computing electric source monitoring circuit, working power observation circuit, communication power supply observation circuit are connected with respectively warning device.
Wherein, described operating power observation circuit, control electric source monitoring circuit, computing electric source monitoring circuit, working power observation circuit, communication power supply observation circuit are connected with respectively indicator.
The beneficial effects of the utility model are: its Intellectualized monitoring and management that can improve power distribution network of power distribution network digital fault indicator of the present utility model, makes distribution network safer reliable, the economic high-quality of operation and efficient; Complete function, cost performance are high, and master-control panel monitoring system is easy to operate, safe and reliable, and monitoring real-time is high, operation and maintenance convenience and high-efficiency.
Brief description of the drawings
Fig. 1 is the modular structure figure of power distribution network digital fault indicator of the present utility model.
Fig. 2 is the circuit diagram of power supply input lightning protection ac filter circuit of the present utility model.
Fig. 3 is the circuit diagram of rectification DC filtering circuit of the present utility model.
Fig. 4 is the circuit diagram of power-switching circuit of the present utility model.
Fig. 5 is operating power observation circuit of the present utility model, the circuit diagram of controlling electric source monitoring circuit, computing electric source monitoring circuit, working power observation circuit and communication power supply observation circuit.
Fig. 6 is the circuit diagram of master-control panel monitoring system of the present utility model.
Embodiment
In order to make object, technical scheme and the advantage of utility model clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.
Referring to Fig. 1 to Fig. 6, a kind of power distribution network digital fault indicator, comprises rectification DC filtering circuit, power-switching circuit, master-control panel monitoring system, operating power unit, controls power supply unit, computing power supply unit, working power unit, communication power supply unit, operating power observation circuit, control electric source monitoring circuit, computing electric source monitoring circuit, working power observation circuit and communication power supply observation circuit;
The parameter that master-control panel monitoring system shows comprises voltage, electric current, power, temperature, working properly/fault, signal alarm/isolation etc., can intuitively understand the situation of these parameters, and operation is very easy.
The power input of described rectification DC filtering circuit is connected in AC220V, and the power output end of described rectification DC filtering circuit is connected in the second source input end of described power-switching circuit; The power output end of described power-switching circuit is connected in the power input of the first power input of described master-control panel monitoring system, the power input of described operating power unit, the power input of described control power supply unit, the power input of described computing power supply unit, described working power unit and the power input of described communication power supply unit;
The power output end of described operating power unit is connected in described operating power observation circuit, the power output end of described control power supply unit is connected in described control electric source monitoring circuit, the power output end of described computing power supply is connected in described computing electric source monitoring circuit, the power output end of described working power unit is connected in described working power observation circuit, and the power output end of described communication power supply unit is connected in described communication power supply observation circuit; The monitoring output of described operating power observation circuit, the monitoring output of described control electric source monitoring circuit, the monitoring output of described computing electric source monitoring circuit, the monitoring output of described working power observation circuit and the monitoring output of described communication power supply observation circuit are connected in the monitor input terminal of described master-control panel monitoring system.
Wherein, before described rectification DC filtering circuit, be also provided with power supply input lightning protection ac filter circuit, the power input of described power supply input lightning protection ac filter circuit is connected in AC220V, and the power output end of described power supply input lightning protection ac filter circuit is connected in the power input of described rectification DC filtering circuit and the first power input of power-switching circuit.
Wherein, also comprise battery set charge/discharge circuit, the first power input of described battery set charge/discharge circuit is connected in the output terminal of described power supply input lightning protection ac filter circuit, the second source input end of described battery set charge/discharge circuit is connected in the output terminal of described power-switching circuit, the first power output end of described battery set charge/discharge circuit is connected in the second source input end of described master-control panel monitoring system, the second source output terminal of described battery set charge/discharge circuit is connected in the power input of described operating power unit, the power input of described control power supply unit, the power input of described computing power supply unit, the power input of the power input of described working power unit and described communication power supply unit.
As shown in Figure 2, wherein, described power supply input lightning protection ac filter circuit comprises: lightning protection device F1, F2 and F3, voltage dependent resistor (VDR) MOV1, MOV2 and MOV3, discharge tube FDG, resistance R 1 and R2, capacitor C 1, C2, C3 and C4, and inductance L 1 and L2; F2, MOV1, MOV2 and F3 are series between live wire L and zero line N successively; FDG one end is connected in MOV1 and MOV2, other end ground connection; The F1 line L that starts to exchange fire one end, one end of another termination MOV3, C1, C2, C3, R1, L1 and L2, another terminal connecting zero line N of MOV3, C1, C2, L1 and L2, one end of another termination C4 of C3 and circuit potential reference point GND, another terminal connecting zero line N of C4, one end of another termination R2 of R1, another terminal connecting zero line N of R2.
As shown in Figure 3, wherein, described rectification DC filtering circuit comprises: capacitor C 5, C6, C7, C8, C9, C10, C11, C12, C13, diode D1, D2, D3 and D4, and inductance L 3; C5 one end connecting circuit potential reference point GND, the other end connects C6, C7, C10, C11, C12 and one end of C13 and the positive pole of D1, D3; The C6 other end connects D1 negative pole, one end of C8 and the positive pole of D2, and the C7 other end connects D3 negative pole, one end of C9 and the positive pole of D4; The other end of the other end of C8, the negative pole of D2, C9, the negative pole of D4 are connected in the other end of one end of L3, C10 and C11; The other end of L3 is connected in the other end of C12 and C13.
As shown in Figure 4, wherein, described power-switching circuit comprises stabilivolt VZ1 and VZ2, diode VD1, VD2 and VD3, transistor I C1 and light lotus root IC2, transformer T1, resistance R 3, R4 and R5, inductance L 4, and capacitor C 14, C15, C16, C17, C18 and C19; VZ1 positive pole is connected in one end of the positive pole of power output end and the primary coil of T1 of described rectification DC filtering circuit, and the negative pole of VZ1 is connected in the negative pole of VD1, and the positive pole of VD1 is connected in the other end of primary coil and the D pin of IC1 of T1; The S pin of IC1 is connected in the negative pole of the power output end of described rectification DC filtering circuit, one end of C17, one end of C16, one end of second subprime coil and one end of C18 of T1, and the G pin of IC1 is connected in one end of R3 and the 3rd pin of IC2; The other end of R3 is connected in the other end of C17; The other end of C16 is connected in the negative pole of VD3 and the 1st pin of IC2, and the positive pole of VD3 is connected in the other end of the second subprime coil of T1; The other end of C18 is connected in one end of C14, and the other end of C14 is connected in one end of one end, R4 and the R5 of the negative pole of VD2, L4, and the other end of R4 is connected in the 2nd pin of IC2; The positive pole of VD2 is connected in one end of the first secondary coil of T1, and the other end of the first secondary coil of T1 is connected in the negative pole of the power output end of described power transfer module; The other end of L4 is connected in the negative pole of one end of C15 and the power output end of described power transfer module, and the other end of C15 is connected in one end of C19 and the positive pole of VZ2; The other end of the other end, VZ2 negative pole and the R5 of C19 is connected in the 4th pin of IC2.
As shown in Figure 5, wherein, described operating power observation circuit, control electric source monitoring circuit, computing electric source monitoring circuit, working power observation circuit and communication power supply observation circuit include voltage transformer (VT) ZMPT101, current transformer ZMCT101, operational amplifier 1/4LM324, diode IN4148 and integrated circuit 7333Q; The two ends of the secondary coil of ZMPT101 and ZMCT101 are connected to positive input and the reverse input end of 1/4LM324, between the reverse input end of 1/4LM324 and output terminal, be connected with 750 Ω resistance, the output terminal of 1/4LM324 is connected in one end of 1K Ω resistance, the other end of described 1K Ω resistance is connected in positive pole, the negative pole of another IN4148 and one end of a 103J electric capacity of an IN4148, the other end ground connection of the negative pole of a described IN4148 and 103J electric capacity, connect+3.3V of the positive pole of described another IN4148; The 1st pin of 7333Q is connected in one end of VDD0 and a 249K Ω resistance, the 2nd, the 3 and 4 be connected in+3.3V of pin of 7333Q and the other end of described 249K Ω resistance, the 5th and 6 pins of 7333Q are connected in circuit voltage reference point GND, the 7th and 8 be connected in+5V of pin of 7333Q.
As shown in Figure 6, wherein, described master-control panel monitoring system comprises microcontroller SAB80C535, trigger SL74HC573 and program storage EEPROM, the data terminal of SAB80C535 is connected with SL74HC573 with EEPROM respectively, and the input end of EEPROM is connected with SL74HC573 respectively with output terminal.
Wherein, described operating power observation circuit, control electric source monitoring circuit, computing electric source monitoring circuit, working power observation circuit, communication power supply observation circuit are connected with respectively warning device.When the corresponding power unit monitoring when some power supply monitorings unit breaks down, corresponding warning device is reported to the police, and operator can very intuitively understand location of fault.
Wherein, described operating power observation circuit, control electric source monitoring circuit, computing electric source monitoring circuit, working power observation circuit, communication power supply observation circuit are connected with respectively indicator.
Its Intellectualized monitoring and management that can improve power distribution network of power distribution network digital fault indicator of the present utility model, makes distribution network safer reliable, the economic high-quality of operation and efficient; Complete function, cost performance are high, and master-control panel monitoring system is easy to operate, safe and reliable, and monitoring real-time is high, operation and maintenance convenience and high-efficiency.
Above content is only preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (10)
1. a power distribution network digital fault indicator, is characterized in that: comprise rectification DC filtering circuit, power-switching circuit, master-control panel monitoring system, operating power unit, control power supply unit, computing power supply unit, working power unit, communication power supply unit, operating power observation circuit, control electric source monitoring circuit, computing electric source monitoring circuit, working power observation circuit and communication power supply observation circuit;
The power input of described rectification DC filtering circuit is connected in AC220V, and the power output end of described rectification DC filtering circuit is connected in the second source input end of described power-switching circuit; The power output end of described power-switching circuit is connected in the power input of the first power input of described master-control panel monitoring system, the power input of described operating power unit, the power input of described control power supply unit, the power input of described computing power supply unit, described working power unit and the power input of described communication power supply unit;
The power output end of described operating power unit is connected in described operating power observation circuit, the power output end of described control power supply unit is connected in described control electric source monitoring circuit, the power output end of described computing power supply is connected in described computing electric source monitoring circuit, the power output end of described working power unit is connected in described working power observation circuit, and the power output end of described communication power supply unit is connected in described communication power supply observation circuit; The monitoring output of described operating power observation circuit, the monitoring output of described control electric source monitoring circuit, the monitoring output of described computing electric source monitoring circuit, the monitoring output of described working power observation circuit and the monitoring output of described communication power supply observation circuit are connected in the monitor input terminal of described master-control panel monitoring system.
2. a kind of power distribution network digital fault indicator according to claim 1, it is characterized in that: before described rectification DC filtering circuit, be also provided with power supply input lightning protection ac filter circuit, the power input of described power supply input lightning protection ac filter circuit is connected in AC220V, and the power output end of described power supply input lightning protection ac filter circuit is connected in the power input of described rectification DC filtering circuit and the first power input of power-switching circuit.
3. a kind of power distribution network digital fault indicator according to claim 2, it is characterized in that: also comprise battery set charge/discharge circuit, the first power input of described battery set charge/discharge circuit is connected in the output terminal of described power supply input lightning protection ac filter circuit, the second source input end of described battery set charge/discharge circuit is connected in the output terminal of described power-switching circuit, the first power output end of described battery set charge/discharge circuit is connected in the second source input end of described master-control panel monitoring system, the second source output terminal of described battery set charge/discharge circuit is connected in the power input of described operating power unit, the power input of described control power supply unit, the power input of described computing power supply unit, the power input of the power input of described working power unit and described communication power supply unit.
4. a kind of power distribution network digital fault indicator according to claim 2, it is characterized in that: described power supply input lightning protection ac filter circuit comprises: lightning protection device F1, F2 and F3, voltage dependent resistor (VDR) MOV1, MOV2 and MOV3, discharge tube FDG, resistance R 1 and R2, capacitor C 1, C2, C3 and C4, and inductance L 1 and L2; F2, MOV1, MOV2 and F3 are series between live wire L and zero line N successively; FDG one end is connected in MOV1 and MOV2, other end ground connection; The F1 line L that starts to exchange fire one end, one end of another termination MOV3, C1, C2, C3, R1, L1 and L2, another terminal connecting zero line N of MOV3, C1, C2, L1 and L2, one end of another termination C4 of C3 and circuit potential reference point GND, another terminal connecting zero line N of C4, one end of another termination R2 of R1, another terminal connecting zero line N of R2.
5. a kind of power distribution network digital fault indicator according to claim 2, it is characterized in that: described rectification DC filtering circuit comprises: capacitor C 5, C6, C7, C8, C9, C10, C11, C12, C13, diode D1, D2, D3 and D4, and inductance L 3; C5 one end connecting circuit potential reference point GND, the other end connects C6, C7, C10, C11, C12 and one end of C13 and the positive pole of D1, D3; The C6 other end connects D1 negative pole, one end of C8 and the positive pole of D2, and the C7 other end connects D3 negative pole, one end of C9 and the positive pole of D4; The other end of the other end of C8, the negative pole of D2, C9, the negative pole of D4 are connected in the other end of one end of L3, C10 and C11; The other end of L3 is connected in the other end of C12 and C13.
6. a kind of power distribution network digital fault indicator according to claim 2, it is characterized in that: described power-switching circuit comprises stabilivolt VZ1 and VZ2, diode VD1, VD2 and VD3, transistor I C1 and light lotus root IC2, transformer T1, resistance R 3, R4 and R5, inductance L 4, and capacitor C 14, C15, C16, C17, C18 and C19; VZ1 positive pole is connected in one end of the positive pole of power output end and the primary coil of T1 of described rectification DC filtering circuit, and the negative pole of VZ1 is connected in the negative pole of VD1, and the positive pole of VD1 is connected in the other end of primary coil and the D pin of IC1 of T1; The S pin of IC1 is connected in the negative pole of the power output end of described rectification DC filtering circuit, one end of C17, one end of C16, one end of second subprime coil and one end of C18 of T1, and the G pin of IC1 is connected in one end of R3 and the 3rd pin of IC2; The other end of R3 is connected in the other end of C17; The other end of C16 is connected in the negative pole of VD3 and the 1st pin of IC2, and the positive pole of VD3 is connected in the other end of the second subprime coil of T1; The other end of C18 is connected in one end of C14, and the other end of C14 is connected in one end of one end, R4 and the R5 of the negative pole of VD2, L4, and the other end of R4 is connected in the 2nd pin of IC2; The positive pole of VD2 is connected in one end of the first secondary coil of T1, and the other end of the first secondary coil of T1 is connected in the negative pole of the power output end of described power transfer module; The other end of L4 is connected in the negative pole of one end of C15 and the power output end of described power transfer module, and the other end of C15 is connected in one end of C19 and the positive pole of VZ2; The other end of the other end, VZ2 negative pole and the R5 of C19 is connected in the 4th pin of IC2.
7. a kind of power distribution network digital fault indicator according to claim 2, is characterized in that: described operating power observation circuit, control electric source monitoring circuit, computing electric source monitoring circuit, working power observation circuit and communication power supply observation circuit include voltage transformer (VT) ZMPT101, current transformer ZMCT101, operational amplifier 1/4LM324, diode IN4148 and integrated circuit 7333Q; The two ends of the secondary coil of ZMPT101 and ZMCT101 are connected to positive input and the reverse input end of 1/4LM324, between the reverse input end of 1/4LM324 and output terminal, be connected with 750 Ω resistance, the output terminal of 1/4LM324 is connected in one end of 1K Ω resistance, the other end of described 1K Ω resistance is connected in positive pole, the negative pole of another IN4148 and one end of a 103J electric capacity of an IN4148, the other end ground connection of the negative pole of a described IN4148 and 103J electric capacity, connect+3.3V of the positive pole of described another IN4148; The 1st pin of 7333Q is connected in one end of VDD0 and a 249K Ω resistance, the 2nd, the 3 and 4 be connected in+3.3V of pin of 7333Q and the other end of described 249K Ω resistance, the 5th and 6 pins of 7333Q are connected in circuit voltage reference point GND, the 7th and 8 be connected in+5V of pin of 7333Q.
8. a kind of power distribution network digital fault indicator according to claim 2, it is characterized in that: described master-control panel monitoring system comprises microcontroller SAB80C535, trigger SL74HC573 and program storage EEPROM, the data terminal of SAB80C535 is connected with SL74HC573 with EEPROM respectively, and the input end of EEPROM is connected with SL74HC573 respectively with output terminal.
9. a kind of power distribution network digital fault indicator according to claim 2, is characterized in that: described operating power observation circuit, control electric source monitoring circuit, computing electric source monitoring circuit, working power observation circuit, communication power supply observation circuit are connected with respectively warning device.
10. a kind of power distribution network digital fault indicator according to claim 2, is characterized in that: described operating power observation circuit, control electric source monitoring circuit, computing electric source monitoring circuit, working power observation circuit, communication power supply observation circuit are connected with respectively indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320866938.2U CN203643552U (en) | 2013-12-26 | 2013-12-26 | Digital fault indicator for power distribution network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320866938.2U CN203643552U (en) | 2013-12-26 | 2013-12-26 | Digital fault indicator for power distribution network |
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| CN203643552U true CN203643552U (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320866938.2U Expired - Lifetime CN203643552U (en) | 2013-12-26 | 2013-12-26 | Digital fault indicator for power distribution network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167744A (en) * | 2016-03-07 | 2017-09-15 | 中国电力科学研究院 | A kind of power distribution automation device power supply (DPS) method for testing and detecting |
| CN110739768A (en) * | 2019-11-20 | 2020-01-31 | 厦门众芯电气设备有限公司 | distribution network automatic power management device |
-
2013
- 2013-12-26 CN CN201320866938.2U patent/CN203643552U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167744A (en) * | 2016-03-07 | 2017-09-15 | 中国电力科学研究院 | A kind of power distribution automation device power supply (DPS) method for testing and detecting |
| CN110739768A (en) * | 2019-11-20 | 2020-01-31 | 厦门众芯电气设备有限公司 | distribution network automatic power management device |
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