CN203720297U - Anticipation device of secondary side open circuit - Google Patents
Anticipation device of secondary side open circuit Download PDFInfo
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- CN203720297U CN203720297U CN201420096186.0U CN201420096186U CN203720297U CN 203720297 U CN203720297 U CN 203720297U CN 201420096186 U CN201420096186 U CN 201420096186U CN 203720297 U CN203720297 U CN 203720297U
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- 238000001514 detection method Methods 0.000 claims abstract description 57
- 238000005259 measurement Methods 0.000 claims description 21
- 230000003466 anti-cipated effect Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 12
- 238000004804 winding Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
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- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides an anticipation device of a secondary side open circuit; the anticipation device comprises a shunt resistance module, a resistance adjusting module, a button switch and a current measuring module; a detection line of the anticipation device is connected with an input end of tested secondary equipment so as to form a loop with a current transformer secondary side; meanwhile, access resistance of the shunt resistance module is zero so as to provide short circuit for the tested secondary equipment; when the tested secondary equipment is detected and re-connected with the system, the resistance adjusting module is used to adjust the access resistance of the shunt resistance module, so the current from the current transformer secondary said can enter the anticipation device, and the current detected by the anticipation device is big enough; the current measuring module is sleeved on the detection line so as to obtain current values passing each phase of the current transformer secondary side, therefore, whether open circuit of the current transformer secondary side is realized or not can be anticipated through determining if current value changes of each single phase are consistent or not, and whether current value can be tested or not on a zero phase after the button switch is closed.
Description
Technical field
The utility model relates to repair apparatus technical field, more particularly, relates to a kind of anticipation device of secondary side open circuit.
Background technology
Current transformer (current transformer, CT) is the important component part of electric system current measurement and relay protection system, the reliability of the accuracy that the stability influence of its operation is measured and protective device action.
The electric current flowing through in winding of current transformer is called primary current, and the electric current flowing through in Secondary Winding is called secondary current.If it is secondary side open circuit that secondary loop of mutual inductor disconnects, primary current will all become exciting current, thereby cause supersaturation magnetization unshakable in one's determination, and produce high voltage at Secondary Winding terminal member.Because high-tension peak value can reach several kilovolts of volts even up to ten thousand, therefore electrical network is brought to very large harm, therefore 10.13 regulations of < < electric power safety working regulation > >: while working on charged secondary loop of mutual inductor, forbid Current Transformer Secondary side to be opened a way.
The method of processing at present Current Transformer Secondary side open circuit is that overvoltage protection is installed, but this method can only minimizing accident occurrence scope and the occurrence degree of reduction accident, can not avoid the generation of accident.Therefore, how when service without power-off, Current Transformer Secondary side maintenance section open circuit being carried out to effectively prediction is those skilled in the art's technical matterss urgently to be resolved hurrily.
Utility model content
In view of this, the utility model provides the anticipation device of a kind of secondary side open circuit, to realize the effective prediction to Current Transformer Secondary side maintenance section open circuit when the service without power-off, thereby avoids the generation of accident, guarantees the stable operation of electric system.
A kind of anticipation device of secondary side open circuit, be applied to Current Transformer Secondary side current return, described Current Transformer Secondary side current return comprises: isolating switch terminal box and Awaiting Overhaul secondary device, the input end of described isolating switch terminal box is connected with Current Transformer Secondary side, the output terminal of described isolating switch terminal box is connected with the input end of described Awaiting Overhaul secondary device, and described anticipation device comprises: shunt resistance module, resistance adjustment module, pushbutton switch and current measurement module;
The input end line of described shunt resistance module and the input end line of described pushbutton switch are all as the detection line of described anticipation device, for connecting the input end of described Awaiting Overhaul secondary device, so that described anticipation device and described Current Transformer Secondary side form loop;
Described resistance adjustment module is connected with described shunt resistance module, for changing the access resistance of described shunt resistance module;
Described pushbutton switch is connected with described shunt resistance module, described resistance adjustment module respectively, and whether described pushbutton switch for opening a way and carry out anticipation mutually described Current Transformer Secondary side zero when closed in itself;
Described current measurement module is set on described detection line, for obtaining each current value passing through mutually of described Current Transformer Secondary side, whether to have current value mutually by judging that whether each single-phase current value variation is consistent and zero, whether described Current Transformer Secondary side is opened a way and carried out anticipation.
Preferably, described resistance adjustment module is combined switch.
Preferably, described combined switch is three grades of combined switches.
Preferably, described current measurement module comprises: current detection module and electric current display module;
Described current detection module is set on described detection line;
Described electric current display module is connected with described current detection module, for the current value that shows that described current detection module detects.
Preferably, described current detection module is Luo-coil.
Preferably, described Luo-coil is TLGX type Luo-coil.
Preferably, described electric current display module is reometer.
Preferably, described reometer comprises: power module, processor module and data disaply moudle;
Described power module is connected with described processor module, described data disaply moudle respectively;
Described processor module is connected with described data disaply moudle.
Preferably, described processor module is single-chip microcomputer.
Preferably, described single-chip microcomputer is MSP430 single-chip microcomputer.
Preferably, described data disaply moudle is LCDs.
Preferably, described power module comprises: power supply and mu balanced circuit;
Described power supply is connected with the input end of described mu balanced circuit, and the output terminal of described mu balanced circuit is connected with described processor module, described data disaply moudle respectively as the output terminal of described power module.
Preferably, described power supply is laminated cell.
Preferably, described mu balanced circuit is the integrated voltage-stabilized chip of 78L05 model.
From above-mentioned technical scheme, can find out, the utility model provides a kind of anticipation device of secondary side open circuit, comprises shunt resistance module, resistance adjustment module, pushbutton switch and current measurement module.When reality is used, the detection line of anticipation device is connected to the input end of Awaiting Overhaul secondary device, and to form loop with Current Transformer Secondary side, now, the access resistance of shunt resistance module is zero with to the short circuit of Awaiting Overhaul secondary device; At Awaiting Overhaul secondary device, overhauled again after connecting system, by resistance adjustment module, regulate the resistance of shunt resistance module, for example the access resistance of shunt resistance module is the equiva lent impedance in maintenance loop, half that realizes electric current that Current Transformer Secondary effluent goes out enters anticipation device, the electric current that anticipation device can be detected is enough large, to improve the reliability of anticipation device, and then effectively avoid due to the Current Transformer Secondary side maintenance section harm that open circuit brings current transformer, secondary device, personal safety etc.Simultaneously, because being set in detection line, current measurement module can obtain each current value passing through mutually of Current Transformer Secondary side, therefore, by judging that each single-phase electricity flow valuve changes whether consistent and pushbutton switch closed rear zero and whether has mutually current value, realize the anticipation whether Current Transformer Secondary side is opened a way.So the anticipation device of the secondary side that the utility model provides open circuit can be opened a way and effectively predict Current Transformer Secondary side maintenance section when service without power-off, thereby has avoided the generation of accident, has guaranteed the stable operation of electric system.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the anticipation device of the disclosed a kind of secondary side open circuit of the utility model embodiment;
Fig. 2 (a) is the structural representation of the disclosed a kind of Current Transformer Secondary current return of the utility model embodiment;
Fig. 2 (b) is the structural representation of the disclosed another kind of Current Transformer Secondary current return of the utility model embodiment;
Fig. 3 (a) is the structural representation that the disclosed a kind of anticipation device of the utility model embodiment is attempted by Current Transformer Secondary current return;
Fig. 3 (b) is the structural representation that the disclosed another kind of anticipation device of the utility model embodiment is attempted by Current Transformer Secondary current return;
Fig. 3 (c) is the structural representation that the disclosed another kind of anticipation device of the utility model embodiment is attempted by Current Transformer Secondary current return;
Fig. 4 is the anticipation device integrated connection schematic diagram of the disclosed a kind of secondary side open circuit of the utility model embodiment;
Fig. 5 is the structural representation of the disclosed a kind of current measurement module of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Referring to Fig. 1, the utility model embodiment discloses a kind of structural representation of anticipation device of secondary side open circuit, this anticipation application of installation is in Current Transformer Secondary side current return, Current Transformer Secondary side loop comprises: isolating switch terminal box 01 and Awaiting Overhaul secondary device 02, the input end of isolating switch terminal box 01 is connected with Current Transformer Secondary side 001, the output terminal of isolating switch terminal box 01 is connected with the input end of Awaiting Overhaul secondary device 02, and anticipation device comprises: shunt resistance module 11, resistance adjustment module 12, pushbutton switch 13 and current measurement module 14;
Wherein:
The input end line of shunt resistance module 11 and the input end line of pushbutton switch 13 are all as the detection line of anticipation device, for connecting the input end of Awaiting Overhaul secondary device 02, so that anticipation device and Current Transformer Secondary side 001 form loop;
Resistance adjustment module 12 is connected with shunt resistance module 11, for changing the access resistance of shunt resistance module 11;
Pushbutton switch 13 is connected with shunt resistance module 11, resistance adjustment module 12 respectively, and whether pushbutton switch 13 is for opening a way and carry out anticipation mutually Current Transformer Secondary side 001 0 when the closed in itself;
Current measurement module 14 is set on detection line, for obtaining Current Transformer Secondary side 001 each current value passing through mutually, whether to have current value mutually by judging that whether each single-phase current value variation is consistent and zero, whether Current Transformer Secondary side 001 is opened a way and carried out anticipation.
When reality is used, first the detection line of anticipation device is connected to the input end of Awaiting Overhaul secondary device 02, make anticipation device and Current Transformer Secondary side 001 form loop, now, the access resistance of shunt resistance module 11 is zero with to 02 short circuit of Awaiting Overhaul secondary device, when the sample rate current of anticipation device and the sample rate current data consistent of current measurement module 14, show that anticipation device does not break down, thereby realize the self check of anticipation device; Disconnect the current terminal on Awaiting Overhaul secondary device 02, Awaiting Overhaul secondary device 02 is carried out to service work, after hours, recover the current terminal of Awaiting Overhaul secondary device 02, make Awaiting Overhaul secondary device 02 connecting system again; Then by resistance adjustment module 12, regulate the resistance of shunt resistance module 11, for example the access resistance of shunt resistance module 11 is the equiva lent impedance in maintenance loop, half that realizes electric current that Current Transformer Secondary effluent goes out enters anticipation device, the electric current that anticipation device can be detected is enough large, improve the reliability of anticipation device, and then effectively avoid due to the Current Transformer Secondary side maintenance section harm that open circuit brings current transformer, secondary device, personal safety etc.Simultaneously, because being set in detection line, current measurement module 14 can obtain Current Transformer Secondary side 001 each phase (A phase, B phase, C phase and N phase) current value that passes through, therefore, by judging that whether unanimously each single-phase electricity flow valuve changes, (be A phase, whether B phase and C phase current value separately all reduce by half), and when A phase, when B phase and C do not open circuit mutually, after pushbutton switch 13 is closed, whether judgement zero phase (being N phase) has current value, only have when A phase, B phase and C phase current value separately all reduce by half, and when N has current value mutually, just show not open circuit of Current Transformer Secondary side 001, otherwise, Current Transformer Secondary side 001 open circuit, and current value has not occurred opening circuit according to circuit corresponding to the phase current of above-mentioned variation, thereby for staff provides foundation to the maintenance of circuit.
Wherein, pushbutton switch 13 only when detecting N and whether have current value mutually just in closure state, otherwise pushbutton switch 13 is always in off-state.
In summary it can be seen, the anticipation device of the secondary side open circuit that the utility model provides can be opened a way and effectively predict Current Transformer Secondary side maintenance section when service without power-off, thereby has avoided the generation of accident, has guaranteed the stable operation of electric system.
Be understandable that, placement and the use of the anticipation device of opening a way for convenience of secondary side, can be arranged on shunt resistance module 11, resistance adjustment module 12, pushbutton switch 13 and current measurement module 14 in an insulation shell.
Wherein, Awaiting Overhaul secondary device 02 is specifically as follows protective device, measure and control device, watt-hour meter, automation equipment, PMU(Phasor Measurement Unit; synchronous phasor measurement unit) etc.; Awaiting Overhaul secondary device 02 specifically need be determined by actual conditions, and the utility model does not limit at this.
It should be noted is that, the Awaiting Overhaul secondary device 02 in the present embodiment can comprise a kind of secondary device, also can comprise two kinds of secondary devices that are connected in series.
Suppose that the first secondary device is that device A, the second secondary device are device B.
Concrete, referring to Fig. 2 (a) and Fig. 2 (b), be respectively the structural representation of the disclosed a kind of Current Transformer Secondary current return of the utility model embodiment, in Fig. 2 (a), the secondary side winding that left side winding is current transformer, current return is after the terminal row on isolating switch terminal box 21, enter in device A, be connected in series after device A, then enter in device B, wherein, the electric current by current transformer comprises: A phase current, B phase current, C phase current and N phase current.In Fig. 2 (b), the secondary side winding that left side winding is current transformer, different from Fig. 2 (a), current return, after the terminal row on isolating switch terminal box 21, only enters in device A.
Therefore, when Current Transformer Secondary current return is shown in Fig. 2 (a) time, the in the situation that of installing A and device B serial connection on current return, when device A is detected, the anticipation device that the utility model provides is attempted by isolating switch terminal box 21 rear (also can think the input end of device A), specifically referring to Fig. 3 (a); When device B is detected, the anticipation device that the utility model provides is attempted by after device A (also can think the input end of device B), specifically referring to Fig. 3 (b).
When Current Transformer Secondary current return is shown in Fig. 2 (b) time, when device A is detected, the anticipation device that the utility model provides is attempted by (also can think the input end of device A) after isolating switch terminal box 21, specifically referring to Fig. 3 (c).
Preferably, resistance adjustment module 12 can be combined switch, is specifically as follows three grades of combined switches.
Current measurement module 14 can comprise: current detection module and electric current display module;
Current detection module is set on detection line;
Electric current display module is connected with current detection module, for the current value that shows that current detection module detects.
Referring to Fig. 4, the utility model embodiment discloses a kind of anticipation device integrated connection schematic diagram of secondary side open circuit, in the present embodiment, resistance adjustment module 12 is three grades of combined switches, these three grades of combined switches comprise: 2 grades, 1 grade and 0 grade, by regulation stall, can change the total resistance value of shunt resistance module 11 accesses, thereby realize different functions.
Electric current display module in the present embodiment is reometer.
As shown in Figure 4, four current measurement modules 14 are set in respectively A phase detection line, B phase detection line, C phase detection line and N phase detection line.Concrete, on A phase detection line, sheathed current detection module is used for obtaining the current value of A phase, and is presented on the A phase current table being connected with this current detection module; On B phase detection line, sheathed current detection module is used for obtaining the current value of B phase, and is presented on the B phase current table being connected with this current detection module; On C phase detection line, sheathed current detection module is used for obtaining the current value of C phase, and is presented on the C phase current table being connected with this current detection module; On N phase detection line, sheathed current detection module is used for obtaining the current value of N phase, and is presented on the N phase current table being connected with this current detection module.
Shunt resistance module 11 in the present embodiment comprises the first resistance R 1 and the second resistance R 2, and wherein, A phase, B phase and C be a respectively corresponding shunt resistance module 11 mutually.
Preferably, the first resistance R 1 and the second resistance R 2 can be RX24G aluminum casing resistor.
Wherein, Reference numeral KN is pushbutton switch.
Concrete, with annexation and three grades of each gears of combined switch that in anticipation device, A phase detection line is corresponding, regulate corresponding all-in resistance to be described in detail:
The branch road that the second resistance R 2 and 1 gear switch are connected in series composition is connected in parallel with button switch K N, the first resistance R 1,2 gear switch respectively, one end of the first resistance R 1 is as A phase detection line output terminal, the other end of the first resistance R 1 is as the output terminal (direction of input current I as shown in FIG.) of N phase detection line, A phase detection line output terminal is arranged with current detection module, to obtain the current value of A phase, and be presented on the A phase current table being connected with this current detection module.
When the gear of three grades of combined switches is during at 2 grades, between A, N, all-in resistance is 0, is equivalent to short circuit; When gear is positioned at 1 grade, between A, N, all-in resistance is R12=R1||R2; When gear is positioned at 0 grade, between A, N, all-in resistance is R1.
It should be noted is that, when the structural representation of Current Transformer Secondary current return is as shown in Figure 2 (a) shows time, the resistance of R1 approximates the internal resistance sum of cable resistance with the device A of terminal box 21 auto levelizer B.The resistance of R12 approximates the internal resistance sum of cable resistance with the device B of device A auto levelizer B.By changing shunt resistance value, observe the curent change passing through on three-phase and whether unanimously judge whether loop opens a way.And whether K switch N sets in order to check N to open a way mutually, when N opens a way mutually, N phase current table does not have current value, otherwise has current value.
Certainly, while not installing B in Current Transformer Secondary current return, the resistance of device B corresponding part is 0.
For avoiding Current Transformer Secondary side load excessive; affect system operation and even jeopardize the correct operation of protection system; through a large amount of statistical study; the resistance of the first resistance R 1 can be decided to be to 0.5 ohm; the resistance of the second resistance R 2 is decided to be 0.33 ohm, and the resistance of all-in resistance R12 is 0.2 ohm, now; correctly analog current loop secondary side is loaded, and can not affect operational outfit.Certainly, can according to actual needs the first resistance R 1 and the second resistance R 2 be set as to other values, the utility model does not limit yet.
Preferably, in above-described embodiment, current detection module can be Luo-coil, is specifically as follows TLGX type Luo-coil.
The application take that maintenance be example to device B in Fig. 3 (b), and in conjunction with Fig. 4, the concrete use step of elaboration anticipation device:
Before anticipation device is used, button switch K N is in off-state.
When step 1, three grades of combined switches in anticipation device are switched to 2 grades (short circuit function), the electric current of A phase detection line, B phase detection line, C phase detection line and N phase detection line access device A is gone out to shield terminal;
When current value that step 2, the A phase current table in anticipation device, B phase current table and C phase current table show is basically identical, the current terminal on disconnecting device B screen, overhauls installing B;
Wherein, step 2 has realized the self-checking function of anticipation device, when the current value of the A phase current table in anticipation device, B phase current table and the demonstration of C phase current table is inconsistent, illustrates that fault has appearred in this anticipation device, now, need to overhaul this anticipation device.
Step 3, to after device B maintenance, the current terminal on return mechanism B screen, soon device B accesses Current Transformer Secondary side again;
Step 4, three grades of combined switches are switched to 1 grade by 2 grades, observe A phase current table, B phase current table whether consistent with the variation of C phase current table (being whether current value reduces by half), if, Current Transformer Secondary side A phase, B phase and C do not open circuit mutually, continue execution step 5, otherwise Current Transformer Secondary side opens circuit, execution step 6;
Whether step 5, three grades of combined switches are switched to 0 grade by 1 grade, and close push button K switch N, observing N phase current table has current value, if so, Current Transformer Secondary side maintenance section open circuit not, work completes, otherwise, execution step 6;
Step 6, to occurring that the circuit of current open overhauls.
It should be noted is that, the reometer in above-described embodiment specifically comprises: power module, processor module and data disaply moudle;
Power module is connected with processor module, data disaply moudle respectively;
Processor module is connected with data disaply moudle.
Concrete, processor module can be single-chip microcomputer, is specifically as follows MSP430 single-chip microcomputer.
Data disaply moudle can be LCDs.
Power module comprises: power supply and mu balanced circuit, and power supply is connected with the input end of mu balanced circuit, and the output terminal of mu balanced circuit is connected with processor module, data disaply moudle respectively as the output terminal of power module.
Wherein, power supply can be laminated cell.
Mu balanced circuit can be the integrated voltage-stabilized chip of 78L05 model.
Current detection module in current measurement module is that Luo-coil, electric current display module are while being reometer, referring to Fig. 5, the utility model embodiment discloses a kind of structural representation of current measurement module, comprises Luo-coil 51, single-chip microcomputer 52, LCDs 53, power supply 54 and mu balanced circuit 55;
Single-chip microcomputer 52 is connected with Luo-coil 51, LCDs 53 and mu balanced circuit 55 respectively, and power supply 54 is connected with mu balanced circuit 55.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (14)
1. the anticipation device of secondary side open circuit, it is characterized in that, be applied to Current Transformer Secondary side current return, described Current Transformer Secondary side current return comprises: isolating switch terminal box and Awaiting Overhaul secondary device, the input end of described isolating switch terminal box is connected with Current Transformer Secondary side, the output terminal of described isolating switch terminal box is connected with the input end of described Awaiting Overhaul secondary device, and described anticipation device comprises: shunt resistance module, resistance adjustment module, pushbutton switch and current measurement module;
The input end line of described shunt resistance module and the input end line of described pushbutton switch are all as the detection line of described anticipation device, for connecting the input end of described Awaiting Overhaul secondary device, so that described anticipation device and described Current Transformer Secondary side form loop;
Described resistance adjustment module is connected with described shunt resistance module, for changing the access resistance of described shunt resistance module;
Described pushbutton switch is connected with described shunt resistance module, described resistance adjustment module respectively, and whether described pushbutton switch for opening a way and carry out anticipation mutually described Current Transformer Secondary side zero when closed in itself;
Described current measurement module is set on described detection line, for obtaining each current value passing through mutually of described Current Transformer Secondary side, whether to have current value mutually by judging that whether each single-phase current value variation is consistent and zero, whether described Current Transformer Secondary side is opened a way and carried out anticipation.
2. anticipation device according to claim 1, is characterized in that, described resistance adjustment module is combined switch.
3. anticipation device according to claim 2, is characterized in that, described combined switch is three grades of combined switches.
4. anticipation device according to claim 1, is characterized in that, described current measurement module comprises: current detection module and electric current display module;
Described current detection module is set on described detection line;
Described electric current display module is connected with described current detection module, for the current value that shows that described current detection module detects.
5. anticipation device according to claim 4, is characterized in that, described current detection module is Luo-coil.
6. anticipation device according to claim 5, is characterized in that, described Luo-coil is TLGX type Luo-coil.
7. anticipation device according to claim 4, is characterized in that, described electric current display module is reometer.
8. anticipation device according to claim 7, is characterized in that, described reometer comprises: power module, processor module and data disaply moudle;
Described power module is connected with described processor module, described data disaply moudle respectively;
Described processor module is connected with described data disaply moudle.
9. anticipation device according to claim 8, is characterized in that, described processor module is single-chip microcomputer.
10. anticipation device according to claim 9, is characterized in that, described single-chip microcomputer is MSP430 single-chip microcomputer.
11. anticipation devices according to claim 8, is characterized in that, described data disaply moudle is LCDs.
12. anticipation devices according to claim 8, is characterized in that, described power module comprises: power supply and mu balanced circuit;
Described power supply is connected with the input end of described mu balanced circuit, and the output terminal of described mu balanced circuit is connected with described processor module, described data disaply moudle respectively as the output terminal of described power module.
13. anticipation devices according to claim 12, is characterized in that, described power supply is laminated cell.
14. anticipation devices according to claim 12, is characterized in that, described mu balanced circuit is the integrated voltage-stabilized chip of 78L05 model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420096186.0U CN203720297U (en) | 2014-03-04 | 2014-03-04 | Anticipation device of secondary side open circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420096186.0U CN203720297U (en) | 2014-03-04 | 2014-03-04 | Anticipation device of secondary side open circuit |
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| Publication Number | Publication Date |
|---|---|
| CN203720297U true CN203720297U (en) | 2014-07-16 |
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|---|---|---|---|
| CN201420096186.0U Withdrawn - After Issue CN203720297U (en) | 2014-03-04 | 2014-03-04 | Anticipation device of secondary side open circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898006A (en) * | 2014-03-04 | 2015-09-09 | 国家电网公司 | Current transformer secondary side open circuit anticipation device |
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2014
- 2014-03-04 CN CN201420096186.0U patent/CN203720297U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898006A (en) * | 2014-03-04 | 2015-09-09 | 国家电网公司 | Current transformer secondary side open circuit anticipation device |
| CN104898006B (en) * | 2014-03-04 | 2018-08-21 | 国家电网公司 | A kind of anticipation device of Current Transformer Secondary side open circuit |
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