CN102447308A - Integrative protector of intelligent power grid terminal - Google Patents
Integrative protector of intelligent power grid terminal Download PDFInfo
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- CN102447308A CN102447308A CN2011104321686A CN201110432168A CN102447308A CN 102447308 A CN102447308 A CN 102447308A CN 2011104321686 A CN2011104321686 A CN 2011104321686A CN 201110432168 A CN201110432168 A CN 201110432168A CN 102447308 A CN102447308 A CN 102447308A
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- circuit
- integrative
- manganese
- power grid
- grid terminal
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- 230000001012 protector Effects 0.000 title abstract description 6
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical compound [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000005070 sampling Methods 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 8
- 238000011064 split stream procedure Methods 0.000 claims abstract description 8
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000003063 flame retardant Substances 0.000 claims abstract description 6
- 239000004020 conductor Substances 0.000 claims description 10
- 241000519996 Teucrium chamaedrys Species 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- 230000006870 function Effects 0.000 abstract description 18
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000006855 networking Effects 0.000 abstract 1
- 230000009993 protective function Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention relates to an integrative protector of an intelligent power grid terminal, which not only has the protective functions of overload, short circuit, overvoltage, undervoltage, electric leakage, automatic tracking of the electric leakage and the like but also has the integrative functions of adjustable operating value of the electric leakage, adjustable operating value of overcurrent, three-time automatic reclosing and the like. The integrative protector of the intelligent power grid terminal also has the functions of displaying and transmitting of the data of single-phase current, single-phase voltage, leakage current and the like and tripping fault alarming. The integrative protector of the intelligent power grid terminal also has the function of intelligentizing and networking management of a low-voltage power grid terminal of remote measurement, remote communication, remote control, remote adjustment and the like. The integrative protector of the intelligent power grid terminal comprises a plastic casing with high flame retardant, a main circuit, an auxiliary power supply circuit, a zero-sequence mutual inductor, a voltage sampling circuit, a manganese-copper split-stream sampling circuit, a data comparing and parameter adjusting circuit, a single chip microcomputer (U3), a light emitting diode (LED) display circuit, an alarm circuit, a remote control communication interface and an electric automatic reclosing circuit.
Description
One, affiliated technical field
The present invention relates to the intelligent grid terminal comprehensive protector in a kind of low-voltage electrical apparatus field, especially a kind of intelligent grid terminal comprehensive protection device that integrates functions such as high breaking miniature circuit breaker, small-sized RCCB, current/voltage electric leakage data acquisition process, automatic reclosing.
Two, background technology
At present; Small-sized RCCB and the small-sized automatic reclosing earth leakage circuit-breaker that is used for the low voltage electric network terminal in the known low-voltage electrical apparatus field all has overload, short circuit, overvoltage, under-voltage, earth leakage protective and a function such as automatic reclosing; But; These Miniature Terminal modularizations protection electrical equipment do not possess intelligent functions such as the electric leakage operating value is adjustable, the overcurrent operating value is adjustable, current/voltage electric leakage demonstration, do not possess low voltage electric network Intelligent Terminal, network management functions such as No. three automatic reclosings and remote measurement, distant news, remote control, remote regulating yet.
Three, summary of the invention
The object of the present invention is to provide a kind of intelligent grid terminal comprehensive protection device; It not only has overload, short circuit, overvoltage, under-voltage, electric leakage, electric leakage from defencive functions such as motion trackings; The electric leakage operating value is adjustable, the overcurrent operating value is adjustable, No. three comprehensive functions such as automatic reclosing but also have; Also have data demonstrations such as monophase current, voltage, leakage current and transmission, separating brake fault alarm function, also possess low voltage electric network Intelligent Terminal, network management functions such as remote measurement, distant news, remote control, remote regulating.
For accomplishing above-mentioned task; The solution that the present invention takes is: a kind of intelligent grid terminal comprehensive protection device, it is made up of high flame retardant plastic casing, main circuit and auxiliary power circuit, ZCT, voltage sample circuit, copper-manganese split-stream sampling circuit, data comparison and parameter adjustment circuit, single-chip microcomputer (U3), LED display circuit, warning circuit, Long-distance Control communication interface, electronic automatic reclosing circuit.
In the high flame retardant plastic casing; Input terminal (N, L) is installed, connects dynamic and static contact (D), be wired to again on the outlet terminal (n, l) with lead; Constitute main circuit; Main circuit inlet wire side through lead parallel connection piezo-resistance (YR1) with recover fuse tube (FU) and the former limit of transformer (T1) certainly, transformer (T1) secondary is connected two diodes (D1, D2), parallel connection two electric capacity (C1, C3), formation auxiliary power circuit and voltage sample circuit.
Main circuit conductor passes ZCT (L01), and the output of ZCT (L01) secondary is parallel with resistance (R19) and diode (D8, D9) and electric capacity (C13) and constitutes sampling circuit of electric leakage.
In main circuit serial connection long for 35mm, wide be 10mm, thickly be the copper-manganese conductor (L02) of 3.5mm, copper-manganese conductor (L02) secondary output connection diode (D10) and resistance (R26) formation copper-manganese split-stream sampling circuit.
Auxiliary power circuit and voltage sample circuit are connected with the signal input tube pin of single-chip microcomputer (U3) (3,4,21-25) respectively through resistance (R26) through operational amplifier (U2A), copper-manganese split-stream sampling circuit through integrated voltage-stabiliser tube (U1) and amplifying triode (Q1), sampling circuit of electric leakage, and each inlet wire pin of toggle switch (SW DIP-9) is connected composition data respectively relatively and the parameter adjustment circuit with resistance (R28-31, R32-35).
Single-chip microcomputer (U3) signal output pin (11-18) is connected with LED display through resistance (R42-49), constitutes the LED display circuit.
Single-chip microcomputer (U3) signal output pin (5,6,7,9) connects and composes warning circuit with light-emitting diode (D11-D13).Test button (S1) and resistance (R1) series connection, opening button (S2), switch knob (S3), signal input, the output (10,26) with single-chip microcomputer (U3) constitutes Long-distance Control and communication interface respectively.
Single-chip microcomputer (U3) control end (27,28) is connected with triode (Q4), and the collector electrode of triode (Q4) is connected with midget relay (J) coil, and midget relay (J) normally opened contact is connected with AC220V micromotor (M) inlet wire, constitutes electronic automatic reclosing circuit.
The invention has the beneficial effects as follows: because multifunctional comprehensive is protected and can be realized long-haul telemetry, distant news, remote control, remote regulating; Intellectuality and network management level in the use of low voltage electric network terminal appliance and household electrical appliance have been improved; Prevent electrical fire and the danger that prevents that the person from getting an electric shock better, strengthen electrical safety and reliability.
Four, description of drawings
Fig. 1 is the circuit diagram of present embodiment.
Fig. 2 is the electrical principle block diagram of present embodiment.
Five, embodiment
Below in conjunction with embodiment and accompanying drawing thereof the present invention is further described.
As depicted in figs. 1 and 2; A kind of intelligent grid terminal comprehensive protection device, it is made up of high flame retardant plastic casing, main circuit and auxiliary power circuit, ZCT, voltage sample circuit, copper-manganese split-stream sampling circuit, data comparison and parameter adjustment circuit, single-chip microcomputer (U3), LED display circuit, warning circuit, Long-distance Control communication interface, electronic automatic reclosing circuit.
As shown in Figure 1; In the high flame retardant plastic casing; Input terminal (N, L) is installed, and (N, L) connects dynamic and static contact (D) with lead from input terminal, connects copper-manganese conductor (L02) end with lead again; Be connected on the outlet terminal (n, l) after copper-manganese conductor (L02) other end connection lead passes ZCT (L01), constitute described main circuit.
As depicted in figs. 1 and 2; In main circuit inlet wire side through lead parallel connection piezo-resistance (YR1) with recover fuse tube (FU) certainly; Parallelly connected two rectifier diodes (D1, D2) of same parallelly connected with transformer (T1) primary coil, transformer (T1) secondary coil and two filter capacitors (C1, C3) constitute described auxiliary power circuit and voltage sample circuit.
As shown in Figure 1, main circuit conductor passes ZCT (L01), and the output parallel resistance (R19) of ZCT (L01) secondary coil constitutes described sampling circuit of electric leakage through parallelly connected rectifier diode (D8, D9) and parallelly connected filter capacitor (C13).
As depicted in figs. 1 and 2; Main circuit connect dynamic and static contact (D) load-side use lead serial connection long as 35mm, widely be 10mm, thick copper-manganese conductor (L02) as 3.5mm; It is secondary that there are two shunt terminal at copper-manganese conductor (L02) two ends, and the secondary output connects diode (D10) and resistance (R26) constitutes the current sampling circuit that described copper-manganese is shunted.
As depicted in figs. 1 and 2; Auxiliary power circuit and voltage sample circuit are connected with the signal input tube pin of single-chip microcomputer (U3) (3,4,21-25) respectively through resistance (R26) through operational amplifier (U2A), copper-manganese split-stream sampling circuit through integrated voltage-stabiliser tube (U1) and amplifying triode (Q1), sampling circuit of electric leakage, and each inlet wire pin of toggle switch (SW DIP-9) is connected with resistance (R28-31, R32-35) respectively and constituted described data comparison circuit and parameter adjustment circuit.
As depicted in figs. 1 and 2, single-chip microcomputer (U3) signal output pin (11-18) is connected with LED display through resistance (R42-49), constitutes described LED display circuit.
As depicted in figs. 1 and 2, single-chip microcomputer (U3) signal output pin (5,6,7,9) connects and composes described warning circuit with light-emitting diode (D11-D13).
As depicted in figs. 1 and 2, test button (S1) and resistance (R1) series connection, opening button (S2), switch knob (S3), signal input, the output (10,26) with single-chip microcomputer (U3) constitutes described Long-distance Control and communication interface respectively.
As depicted in figs. 1 and 2; Single-chip microcomputer (U3) control end (27,28) is connected with triode (Q4); The collector electrode of triode (Q4) is connected with midget relay (J) coil, and midget relay (J) normally opened contact is connected with AC220V micromotor (M) inlet wire, constitutes described electronic automatic reclosing circuit.
With compare with Terminal Type modularization protective circuit breaker product, this intelligent grid terminal comprehensive protection device has the following advantages:
1, overload, the short circuit current operating value is adjustable, electric leakage operating value adjustable, the automatic following function of leaking electricity;
2, under-voltage and over-voltage protecting function is adjustable;
3, display voltage value, current value, electrical leakage;
4, transfer of data such as voltage, electric current, electric leakage, divide-shut brake number of times;
5, divide-shut brake fault alarm function;
6, long-range separating brake and combined floodgate control defencive function;
7, be connected with pre payment watthour meter, the arrearage automatic brake separating is handed over sufficient electricity charge automatic closing, has the function of rationing the power supply;
8, three delayed automatic reclosings can be used as communication base station power supply protection usefulness, the dual controlled function of manual and electric;
9, possess low voltage electric network Intelligent Terminal, network management functions such as remote measurement, distant news, remote control, remote regulating;
10, available TH-35 track is installed in PZ30 (lighting case) PZ40 (ammeter box), small-sized modularization profile.
Claims (3)
1. intelligent grid terminal comprehensive protection device; It is characterized in that: it is made up of high flame retardant plastic casing, main circuit and auxiliary power circuit, ZCT, voltage sample circuit, copper-manganese split-stream sampling circuit, data comparison and parameter adjustment circuit, single-chip microcomputer (U3), LED display circuit, warning circuit, Long-distance Control communication interface, electronic automatic reclosing circuit; It is characterized in that: in modularization small plastic shell; Input terminal (N, L) is installed; Be wired on the dynamic/static contact (D), be wired to again on the outlet terminal (n, 1), constitute main circuit; Main circuit inlet wire side through lead parallel connection piezo-resistance (YR1) with recover fuse tube (FU) and the former limit of transformer (T1) certainly, transformer (T1) secondary is connected two diodes (D1, D2); Parallel connection two electric capacity (C1, C3) constitute auxiliary power circuit and voltage sample circuit; Being connected integrated voltage-stabiliser tube (U1) and amplifying triode (Q1), sampling circuit of electric leakage concatenation operation amplifier (U2A), copper-manganese split-stream sampling circuit are connected resistance (R26) with voltage sample circuit after, auxiliary power circuit is connected with the signal input tube pin of single-chip microcomputer (U3) (3,4,21-25) again; Each inlet wire pin of toggle switch (SW DIP-9) is connected composition data comparison circuit and parameter adjustment circuit with resistance (R28-31, R32-35) respectively.
2. a kind of intelligent grid according to claim 1 terminal comprehensive protection device; It is characterized in that: in main circuit serial connection long for 35mm, wide for 10mm, thickly be the copper-manganese conductor (L02) of 3.5mm, copper-manganese conductor (L02) secondary output connects the current sampling circuit that diode (D10) and resistance (R26) formation copper-manganese are shunted.
3. a kind of intelligent grid according to claim 1 terminal comprehensive protection device; It is characterized in that: single-chip microcomputer (U3) control end (27,28) is connected with triode (Q4); The collector electrode of triode (Q4) is connected with midget relay (J) coil; Midget relay (J) normally opened contact is connected with AC220V micromotor (M) inlet wire, constitutes electronic automatic reclosing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104321686A CN102447308A (en) | 2011-12-15 | 2011-12-15 | Integrative protector of intelligent power grid terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104321686A CN102447308A (en) | 2011-12-15 | 2011-12-15 | Integrative protector of intelligent power grid terminal |
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| Publication Number | Publication Date |
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| CN102447308A true CN102447308A (en) | 2012-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011104321686A Pending CN102447308A (en) | 2011-12-15 | 2011-12-15 | Integrative protector of intelligent power grid terminal |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946083A (en) * | 2012-08-30 | 2013-02-27 | 国家电网公司 | Intelligent household circuit breaker |
| CN103795027A (en) * | 2012-10-31 | 2014-05-14 | 上海儒竞电子科技有限公司 | Electric leakage detection protection circuit |
| CN107422671A (en) * | 2017-07-21 | 2017-12-01 | 中国电力科学研究院 | A kind of intelligent current limliting based on copper-manganese resistance sampling takes control breaker and current-limiting method |
| CN116298504A (en) * | 2023-02-20 | 2023-06-23 | 国网黑龙江省电力有限公司佳木斯供电公司 | An adjustable electric shock protection smart energy meter |
-
2011
- 2011-12-15 CN CN2011104321686A patent/CN102447308A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946083A (en) * | 2012-08-30 | 2013-02-27 | 国家电网公司 | Intelligent household circuit breaker |
| CN102946083B (en) * | 2012-08-30 | 2014-12-10 | 国家电网公司 | Intelligent household circuit breaker |
| CN103795027A (en) * | 2012-10-31 | 2014-05-14 | 上海儒竞电子科技有限公司 | Electric leakage detection protection circuit |
| CN107422671A (en) * | 2017-07-21 | 2017-12-01 | 中国电力科学研究院 | A kind of intelligent current limliting based on copper-manganese resistance sampling takes control breaker and current-limiting method |
| CN116298504A (en) * | 2023-02-20 | 2023-06-23 | 国网黑龙江省电力有限公司佳木斯供电公司 | An adjustable electric shock protection smart energy meter |
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Application publication date: 20120509 |