CN101082661A - Current mutual inductor for intelligent electrical apparatus release and control method thereof - Google Patents
Current mutual inductor for intelligent electrical apparatus release and control method thereof Download PDFInfo
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- CN101082661A CN101082661A CN 200710057766 CN200710057766A CN101082661A CN 101082661 A CN101082661 A CN 101082661A CN 200710057766 CN200710057766 CN 200710057766 CN 200710057766 A CN200710057766 A CN 200710057766A CN 101082661 A CN101082661 A CN 101082661A
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Abstract
The invention discloses a current transformer testing device and method of intelligent electrical apparatus release, which comprises the following parts: constant-current source device to do coarse and fine regulation, multiple-typed transformer testing device, motor to adjust the voltage regulator in the constant-current source device, constant-current control circuit and display device, wherein the upflow transformer of the constant-current source device is direct-connected upflow transformer in the multiple-typed transformer testing device with patching terminal at two ends connecting display device and input end of the computer; the constant-current control circuit contains two control circuits of voltage regulating motor to do positive and negative rotation; the output end of the computer outputs on-off signal to transmit to the voltage regulating motor through positive and negative rotation of voltage regulating motor. The invention displays multiple groups of voltage value output by real-time tested multiple-grouped transformer on the touching screen with constant current between 0 and 5000A and precision of stable current at +-3%, which eliminates the error of artificial measurement and regulation.
Description
Affiliated technical field
The invention belongs to a kind of pick-up unit that detects the current transformer performance parameter, particularly relate to a kind of current mutual inductor for intelligent electrical apparatus release and control method that detects intelligent electrical apparatus release mutual inductor parameter.
Background technology
The current transformer that is used for intelligent electrical apparatus release in the present known production need carry out the detection of output voltage parameter, carried out this test in the past, it generally is test current by the given tested current transformer of mode of pressure regulation manually, artificially adopt multimeter to measure the secondary voltage of this current transformer then, can cause excessive personal error so on the one hand, be difficult to guarantee the high-precision test result; Bring some potential safety hazards also on the other hand the test testing staff.
Summary of the invention
But the present invention provides a kind of current mutual inductor for intelligent electrical apparatus release and control method of high Precision Detection intelligent electrical apparatus release Current Transformer performance parameter for solving the technical matters that exists in the known technology.
The technical scheme that the present invention takes for the technical matters that exists in the solution known technology provides a kind of device: it includes the constant-current source device and the multiple model mutual inductor test unit that can carry out coarse adjustment and fine setting, also includes to be used for regulating pressure regulation motor, current stabilization control circuit and the display device that described two pressure regulators that carry out the constant-current source device of coarse adjustment and fine setting move; Rising current transformer in the described constant-current source device that carries out coarse adjustment and fine setting is exactly the direct connecting type rising current transformer in the multiple model mutual inductor test unit; The connection terminal at the tested mutual inductor of the connection two ends in the multiple model mutual inductor test unit connects the detection signal input end and the input end and computer of described display device; Described current stabilization control circuit includes the control circuit that two pressure regulation motor of control are done rotating, and the control circuit that the make-and-break signal of the output terminal output of described computing machine is done rotating by described two pressure regulation motor passes to the pressure regulation motor.
The present invention can also adopt following technical measures:
Described display device is a touch-screen, and computing machine links to each other with touch-screen by communication bus.
Described computing machine can be single-chip microcomputer, industrial computer or PLC.
The technical scheme that the present invention takes for the technical matters that exists in the solution known technology also provides a kind of method of controlling this device, before the program of entering, at first connect external power source and control circuit power supply, by the time after control program initialization finishes, press main circuit start button main circuit and power on, its master routine includes following steps:
(1) enters the screen displaying program after the beginning, carry out test parameters setting and touch screen function and switch to demonstration of mutual inductor voltage or current stabilization mode interface;
(2) if enter current stabilization mode interface, then judge it is automated manner or manual mode;
(3) if be judged as automated manner, then enter automatic steady current mode program to test current and stabilize to the test parameters setting value;
(4) if be judged as manual mode, then carry out manual current stabilization;
(5) if judge that test current has been stabilized to the test parameters setting value, then enter the screen displaying program once more and withdraw from master routine.
The method that the present invention controls this device can also adopt following technical measures:
Described screen displaying program may further comprise the steps:
(1) begin to enter the welcome interface, program enters the test interface if the welcome button is touched;
(2) mutual inductor voltage, current constant are arranged and return three buttons at the test interface; When being touched, mutual inductor voltage button then enters mutual inductor voltage display interface; Then enter the current stabilization interface when the current constant button is touched, withdraw from this program this moment, enters the automatic steady current program; Then program is returned and is welcome the interface when return push-button is touched.
Described current stabilization program includes following steps: after test current preestablishes
(1) whether the absolute value of difference of judging constant current source actual output current value and predefined current value more than or equal to a special set-point, if for being then enter the coarse adjustment program, if for otherwise enter the fine setting program;
(2) enter the coarse adjustment program after, the magnitude of voltage that at first will finely tune pressure regulator transfers to zero-bit,
(3) whether judge constant current source actual output current value again more than or equal to predefined current value, if for denying that the coarse adjustment motor is just changeing, if for being the counter-rotating of coarse adjustment motor;
(4) further judge again according to top adjustment result whether the absolute value of the difference of constant current source actual output current value and predefined current value is less than or equal to half of described special set-point, if not, then return step (3) and proceed coarse adjustment, be less than or equal to half of described special set-point until the absolute value of the difference of judging constant current source actual output current value and predefined current value, then enter the fine setting program;
(5) whether at first judge constant current source actual output current value more than or equal to predefined current value after entering fine setting, if for not, then finely tuning motor is just changeing, if for being, the fine setting motor reverses,
(6) whether the absolute value of judging the difference of constant current source actual output current value and predefined current value equals zero, and if yes, this current stabilization EOP (end of program) then is if not, then get back to step (5);
(7) judge that the absolute value of constant current source actual output current value and the difference of predefined current value is during less than described special set-point, just directly enters the fine setting program if begin the back in this current stabilization program;
(8) at first the magnitude of voltage of coarse adjustment pressure regulator is transferred to zero-bit after entering the fine setting program;
(9) whether judge constant current source actual output current value more than or equal to predefined current value, if for not, then finely tuning motor is just changeing, if for being then to finely tune motor and reverse;
(10) further judge again according to top adjustment result whether the absolute value of the difference of constant current source actual output current value and predefined current value equals zero, if, then return step (9) and proceed fine setting for not, if yes, this current stabilization EOP (end of program) then.
Advantage and good effect that the present invention has are: owing to adopted ZL200720096035.5 " multiple model mutual inductor test unit " and ZL200720096036.X " can carry out the constant-current source device of coarse adjustment and fine setting " so this testing table can be tested many groups mutual inductor simultaneously, testing table adopts Single-chip Controlling, by touch-screen given electric current is set arbitrarily, automatic steady current in the 0---5000A scope, precision of steady current is ± 3%, need not the artificial manual adjustment voltage of operator; Detect many groups magnitude of voltage of many group mutual inductors output simultaneously in real time, and be presented on the touch-screen, need not the operator artificially measure, eliminated artificial measurement and adjusted the error of bringing.
Description of drawings
Fig. 1 is a general structure synoptic diagram of the present invention;
Fig. 2 is the circuit theory diagrams among Fig. 1;
Fig. 3 is the main program flow chart among Fig. 1;
Fig. 4 is the screen displaying program flow diagram among Fig. 1;
Fig. 5 is the automatic steady current program flow diagram among Fig. 1.
Embodiment
For further understanding content, characteristics and the effect of invention, exemplifies now and following the present invention is used for embodiment on the intelligent electrical apparatus release testing table, and conjunction with figs. is described in detail as follows:
As shown in Figure 1, casing A, display device B and test fixture C.In the described casing A constant-current source device is housed; Described display device B is by Single-chip Controlling; Described test fixture C directly is fixed on the output copper bar of direct connecting type rising current transformer.
Be illustrated in figure 2 as circuit theory diagrams of the present invention, comprise main circuit and control circuit, wherein main circuit mainly comprises input power control switch MC1, MC2, A.C. contactor J0, electronic adjustable constant-flow source, current transformer L and display device TA.Described display device TA mainly is made up of control core single-chip microcomputer and touch-screen.Described power control switch MC1 is a main power switch, and MC2 is the control power switch, the break-make of A.C. contactor J0 control major loop.External power source passes through constant current source and direct supply POWER, display device TA in the control circuit and the A.C. contactor J0 coil in J0 and the MC2 supply main circuit respectively behind MC1, current transformer L feeds back to single-chip microcomputer among the display device TA with the electric signal that measures, come out through the actual current value in the calculating acquisition major loop and by screen displaying by single-chip microcomputer again, the electric signal of same tested mutual inductor also can finally be come out by screen displaying by the calculating of single-chip microcomputer, and the communication between described single-chip microcomputer and the touch-screen is finished by the RS232 bus.Thereby can also control two pressure regulation motor M1, the M2 rotating of the break-make control constant current source of JQ1, JQ2, JQ3 and four relays of JQ4 and MOS1, MOS2 as the single-chip microcomputer of control circuit core by the break-make of P1-P6 output port, the final current stabilization of realizing, wherein required direct supply is provided by direct supply POWER.
Touch-screen model: LJD-ZN-3200 adopts single-chip microcomputer model: ATMEL128
Be depicted as control main flow chart of the present invention as Fig. 3,4,5, master routine mainly is made of screen displaying program and constant current source automatic steady current program, the function of described screen displaying program is demonstration and current test parameters is set, and can switch mutual inductor and manual automatic steady current control interface by touch function; Described constant current source automatic steady current program is the kernel program of the automatic control function of the utility model, and its major function is to regulate coarse adjustment and fine setting electric voltage regulator realization automatic steady current according to the output of rising current transformer.
Before the program of entering, need carry out the operation of hardware components, the MC1 that at first closes connects external power source, the MC2 that closes again connects the control circuit power supply, by the time after control program initialization finishes, press main circuit start button SB0, contactor J0 adhesive this moment main circuit powers on, and the hardware components operation is finished.
As shown in Figure 4, the specific implementation process of screen displaying program is: begin to enter and welcome the interface, program enters the test interface if the welcome button is touched; Mutual inductor voltage, current constant are arranged and return three selector buttons at the test interface, when touching mutual inductor voltage button, enter mutual inductor voltage display interface and carry out the setting of mutual inductor voltage, the constant button of pick-up current enters the current stabilization interface, can select manual or automatic steady current this moment, touches the return push-button program and return the welcome interface.
As shown in Figure 5, the specific implementation process of constant current source automatic steady current program is: carry out test current after the beginning and preset, touch the predetermined current frame and eject the predetermined current square frame, choosing needs to touch the OK button behind the test current, and test current is default to finish.Next program begins to judge I
RealWith I
IfThe absolute value of difference whether more than or equal to 1000A, be then to enter the coarse adjustment program, otherwise enter the fine setting program.After entering the coarse adjustment program, at first fine setting is transferred to zero-bit, judge I then
RealWhether greater than or etc. I
IfIf, for denying that the coarse adjustment motor is just changeing, for being the counter-rotating of coarse adjustment motor.And then program is judged I according to top adjustment result
RealWith I
IfThe absolute value of difference whether be less than or equal to 500A, if not, then return the step and continue coarse adjustment judgement I
RealWhether greater than or etc. I
IfRecycle is adjusted, up to for being then to enter fine setting judgement I
RealWhether greater than or etc. I
IfIf finely tune motor and just changeing for not this moment, for being the counter-rotating of fine setting motor.If same program is beginning to judge I
RealWith I
IfThe absolute value of difference during whether more than or equal to 1000A, just enter the fine setting program, after program at first transfers to zero-bit to coarse adjustment so, finely tune again and judge I
RealWhether greater than or etc. I
If, finely tune motor if not and just change, be the counter-rotating of fine setting motor, and then program is judged I according to top adjustment result
RealWith I
IfThe absolute value of difference whether equal 0A, if, then return fine setting and judge I for not
RealWhether greater than or etc. I
IfRecycle is adjusted, up to for not quitting a program.
Claims (6)
1. current mutual inductor for intelligent electrical apparatus release, it includes the constant-current source device and the multiple model mutual inductor test unit that can carry out coarse adjustment and fine setting, it is characterized in that: the pressure regulation motor, current stabilization control circuit and the display device that also include two pressure regulators actions that are used for regulating the described constant-current source device that carries out coarse adjustment and fine setting; Rising current transformer in the described constant-current source device that carries out coarse adjustment and fine setting is exactly the direct connecting type rising current transformer in the multiple model mutual inductor test unit; The connection terminal at the tested mutual inductor of the connection two ends in the multiple model mutual inductor test unit connects the detection signal input end and the input end and computer of described display device; Described current stabilization control circuit includes the control circuit that two pressure regulation motor of control are done rotating, and the control circuit that the make-and-break signal of the output terminal output of described computing machine is done rotating by described two pressure regulation motor passes to the pressure regulation motor.
2. current mutual inductor for intelligent electrical apparatus release according to claim 1 is characterized in that: described display device is a touch-screen, and computing machine links to each other with touch-screen by communication bus.
3. current mutual inductor for intelligent electrical apparatus release according to claim 1 is characterized in that: described computing machine can be single-chip microcomputer, industrial computer or PLC.
4. the control method of a current mutual inductor for intelligent electrical apparatus release, before the program of entering, at first connect external power source and control circuit power supply, after control program initialization by the time finishes, press main circuit start button main circuit and power on, its master routine includes following steps:
(1) enters the screen displaying program after the beginning, carry out test parameters setting and touch screen function and switch to demonstration of mutual inductor voltage or current stabilization mode interface;
(2) if enter current stabilization mode interface, then judge it is automated manner or manual mode;
(3) if be judged as automated manner, then enter automatic steady current mode program to test current and stabilize to the test parameters setting value;
(4) if be judged as manual mode, then carry out manual current stabilization;
(5) if judge that test current has been stabilized to the test parameters setting value, then enter the screen displaying program once more and withdraw from master routine.
5. the control method of current mutual inductor for intelligent electrical apparatus release according to claim 4, it is characterized in that: described screen displaying program may further comprise the steps:
(1) begin to enter the welcome interface, program enters the test interface if the welcome button is touched;
(2) mutual inductor voltage, current constant are arranged and return three buttons at the test interface; When being touched, mutual inductor voltage button then enters mutual inductor voltage display interface; Then enter the current stabilization interface when the current constant button is touched, withdraw from this program this moment, enters the automatic steady current program; Then program is returned and is welcome the interface when return push-button is touched.
6. the control method of current mutual inductor for intelligent electrical apparatus release according to claim 4, described current stabilization program includes following steps: after test current preestablishes
(1) whether the absolute value of difference of judging constant current source actual output current value and predefined current value more than or equal to a special set-point, if for being then enter the coarse adjustment program, if for otherwise enter the fine setting program;
(2) enter the coarse adjustment program after, the magnitude of voltage that at first will finely tune pressure regulator transfers to zero-bit,
(3) whether judge constant current source actual output current value again more than or equal to predefined current value, if for denying that the coarse adjustment motor is just changeing, if for being the counter-rotating of coarse adjustment motor;
(4) further judge again according to top adjustment result whether the absolute value of the difference of constant current source actual output current value and predefined current value is less than or equal to half of described special set-point, if not, then return step (3) and proceed coarse adjustment, be less than or equal to half of described special set-point until the absolute value of the difference of judging constant current source actual output current value and predefined current value, then enter the fine setting program;
(5) whether at first judge constant current source actual output current value more than or equal to predefined current value after entering fine setting, if for not, then finely tuning motor is just changeing, if for being, the fine setting motor reverses,
(6) whether the absolute value of judging the difference of constant current source actual output current value and predefined current value equals zero, and if yes, this current stabilization EOP (end of program) then is if not, then get back to step (5);
(7) judge that the absolute value of constant current source actual output current value and the difference of predefined current value is during less than described special set-point, just directly enters the fine setting program if begin the back in this current stabilization program;
(8) at first the magnitude of voltage of coarse adjustment pressure regulator is transferred to zero-bit after entering the fine setting program;
(9) whether judge constant current source actual output current value more than or equal to predefined current value, if for not, then finely tuning motor is just changeing, if for being then to finely tune motor and reverse;
(10) further judge again according to top adjustment result whether the absolute value of the difference of constant current source actual output current value and predefined current value equals zero, if, then return step (9) and proceed fine setting for not, if yes, this current stabilization EOP (end of program) then.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200710057766 CN101082661A (en) | 2007-06-28 | 2007-06-28 | Current mutual inductor for intelligent electrical apparatus release and control method thereof |
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| CN 200710057766 CN101082661A (en) | 2007-06-28 | 2007-06-28 | Current mutual inductor for intelligent electrical apparatus release and control method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445656A (en) * | 2011-11-24 | 2012-05-09 | 天津市百利电气有限公司 | Detection device for electronic release of low-voltage apparatus, and control method |
| CN103677033A (en) * | 2013-12-15 | 2014-03-26 | 甘肃长城电工电器工程研究院有限公司 | High-current automatic-stabilization control method and system for switching device test |
| CN107728092A (en) * | 2017-10-02 | 2018-02-23 | 国网山西省电力公司电力科学研究院 | The automatic precision pre-check device and method of calibration of Transformer Winding no-load voltage ratio tester |
| CN109521389A (en) * | 2018-12-28 | 2019-03-26 | 武汉磐电科技股份有限公司 | A kind of electronic mutual inductor evaluating platform control system and its implementation |
| CN112034334A (en) * | 2020-08-31 | 2020-12-04 | 龙铁纵横（北京）轨道交通科技股份有限公司 | Rail transit locomotive safety loop relay function testing device and method |
-
2007
- 2007-06-28 CN CN 200710057766 patent/CN101082661A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445656A (en) * | 2011-11-24 | 2012-05-09 | 天津市百利电气有限公司 | Detection device for electronic release of low-voltage apparatus, and control method |
| CN102445656B (en) * | 2011-11-24 | 2014-03-12 | 天津市百利电气有限公司 | Detection device for electronic release of low-voltage apparatus, and control method |
| CN103677033A (en) * | 2013-12-15 | 2014-03-26 | 甘肃长城电工电器工程研究院有限公司 | High-current automatic-stabilization control method and system for switching device test |
| CN107728092A (en) * | 2017-10-02 | 2018-02-23 | 国网山西省电力公司电力科学研究院 | The automatic precision pre-check device and method of calibration of Transformer Winding no-load voltage ratio tester |
| CN109521389A (en) * | 2018-12-28 | 2019-03-26 | 武汉磐电科技股份有限公司 | A kind of electronic mutual inductor evaluating platform control system and its implementation |
| CN112034334A (en) * | 2020-08-31 | 2020-12-04 | 龙铁纵横（北京）轨道交通科技股份有限公司 | Rail transit locomotive safety loop relay function testing device and method |
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Open date: 20071205 |