CN2245218Y - Detector for testing high voltage insulating dynamic characteristic - Google Patents

Abstract

The utility model relates to a detector for testing a high voltage insulating dynamic characteristic, which is provided with an operation unit of which the zero terminal is connected to the low voltage terminal of testing power supply, at least one suspending unit which is provided with a shielding isolation shell and is supplied with electricity by isolation power supply, a data and a remote control paths which are connected between the operation unit and the suspending unit. The specific characteristic structures of the utility model are a structure of single chip microcomputer-single chip microcomputer, a structure of unit microcomputer-multipath remote control component + V/F converter and a structure of single chip microcomputer + multipath remote control component -(A/D) converter. The utility model can realize the integrated detection of the parameters of a polarization curve, an i-u curve, alternating current and direct current leakage current, insulation resistance, an absorption ratio, a polarization index, etc.

Description

A kind of High-Voltage Insulation dynamic perfromance detector

The design relates to a kind of insulating of electric measurement of high pressure detecting instrument, the detector of particularly a kind of intelligent alternating current-direct current high-potting dynamic characteristic parameter and curve.

Megohmmeter is the most frequently used insulation tester table, but is difficult to find that with it the test product part makes moist and defectives such as locality pore, crackle, therefore need comprehensively judge by other complementary means.The alternating current test method(s) of the high direct voltage method of test for leaks electric current commonly used, measurement i-u curve is found insulation degradation hidden danger such as the part makes moist, local gaps defective, but the instrument of existing these two kinds of methods only limits to the measurement of static parameter, need depict polarization curve or i-u curve by hand, not only time-consuming taking a lot of work, and inaccurate.

Therefore the purpose of this utility model is the actual requirement according to electrical engineering insulation analysis-by-synthesis, design and a kind ofly in the test of high direct voltage method, alternating current method, can detect and demonstrate polarization curve, i-u curve and AC and DC leakage current, insulation resistance, absorptance, the isoparametric dynamic perfromance synthesization of polarization index instrument, to satisfy the needs in power instrument market with same intelligent equipment ground.

For reaching this purpose, the total design of the design is: single chip microcomputer is transformed into digitized signal by the circuit in the remote control path manipulation floating unit with the leakage current simulating signal, is sent to actuation unit through data path; At actuation unit, single chip microcomputer also detects test voltage by the test voltage sampler; Be provided with " exchanging the real effective algorithm " softwares such as " digital filterings " in the single chip microcomputer, therefore can be subjected under the strong jamming situation, calculate polarization curve more exactly, i-u curvilinear characteristic value, and calculate dc leakage-current, ac leakage current, insulation resistance, absorptance, parameters such as polarization index, in actuation unit, demonstrate polarization curve then on liquid crystal dot matrix display or the printer in real time, i-u curve and above-mentioned each parameter, and carry out higher level data processing by measurement data being sent in the database of PC with the PC on-line interface.Its concrete technical solution has following three kinds:

First kind is the observing and controlling and the digitized signal transmission structure of principal character with " single chip microcomputer-single chip microcomputer ": this structure have the actuation unit of one zero end ground connection and at least one have shielding isolate shell and by the floating unit of insulating power supply power supply and be connected in actuation unit and floating unit between data path, remote control path.Said actuation unit includes: have the single chip microcomputer of band (A/D) converter observing and controlling passage, display, test voltage sampler, data transmit circuit and with the joining sending device of this transtation mission circuit, data receiver circuit and with the joining receiving device of this receiving circuit, wherein: data transmit circuit and data receiver circuit link with two end pin of the serial line interface of the single chip microcomputer of actuation unit respectively; Display and single chip microcomputer link; The output terminal of test voltage sampler is attached to the input end of observing and controlling passage, the controlled end of single chip microcomputer corresponding (I/O) mouthful control test voltage sampler, and the power switch of single chip microcomputer corresponding (I/O) mouthful control testing power supply.Said floating unit includes: the measurement passage with single chip microcomputer, leakage current sampler, data receiver circuit reach and the joining receiving device of this receiving circuit, data transmit circuit and with the joining sending device of this transtation mission circuit, wherein: data transmit circuit and data receiver circuit link with two end pin of the serial line interface of the single chip microcomputer of floating unit respectively; The input end of leakage current sampler (CI) is attached to the input end (Ain) of measuring passage (A), the controlled end (j) of single chip microcomputer (MCUc) corresponding (I/O) mouthful control sampler (CI).

Second kind is the observing and controlling and the digitized signal transmission structure of principal character with " single chip microcomputer-multichannel remote control module+(V/F) transducer ": this structure have the actuation unit of one zero end ground connection and at least one have shielding isolate shell and by the floating unit of insulating power supply power supply and be connected in actuation unit and floating unit between data path, remote control path.Said actuation unit contains: observing and controlling passage, display, test voltage sampler, the data transmit circuit that the multichannel remote control module constitutes and the sending device that connects with this transtation mission circuit, data receiver circuit with single chip microcomputer of band (A/D) converter reach and the joining receiving device of this receiving circuit, wherein: transtation mission circuit and single chip microcomputer corresponding (I/O) mouth links, and (timing) mouth of receiving circuit and single chip microcomputer links; Display and single chip microcomputer link; The output terminal of test voltage sampler is attached to the input end of observing and controlling passage, and the controlled end of test voltage sampler and single chip microcomputer corresponding (I/O) mouth links, and the power switch of single chip microcomputer corresponding (I/O) mouthful control testing power supply.Said floating unit contains: the data receiver circuit that have the measurement passage, leakage current sampler of (V/F) transducer and multi-way switch, constitutes by the multichannel remote control module and with the joining receiving device of this receiving circuit, data transmit circuit reaches and the joining transmitting element of this transtation mission circuit, wherein: the output terminal of leakage current sampler is attached to measures the passage input end, and the output terminal of measuring (V/F) transducer in the passage is attached to the input end of transtation mission circuit; A part of output terminal pin of receiving circuit is attached to the controlled end of measuring multi-way switch in the distant road, and another part output terminal pin is attached to the controlled end of leakage current sampler, to carry out range conversion.

The third is the observing and controlling and the digitized signal transmission structure of principal character with " single chip microcomputer+multichannel remote control module-(A/D) converter ": this structure have the actuation unit of one zero end ground connection and at least one have shielding isolate shell and by the floating unit of insulating power supply power supply and be connected in actuation unit and floating unit between data path, remote control path.Said actuation unit contains: have data receiver circuit that the observing and controlling passage, display, test voltage sampler, multichannel remote control module of band (A/D) converter single chip microcomputer constitute and with the joining receiving device of this receiving circuit, wherein: the part of transtation mission circuit and single chip microcomputer (I/O) mouth links, and another part of receiving circuit and single chip microcomputer (I/O) mouth links; Display and single chip microcomputer link; The output terminal of test voltage sampler is attached to the input end of observing and controlling passage, the controlled end of single chip microcomputer corresponding (I/O) mouthful control test voltage sampler, and the power switch of single chip microcomputer corresponding (I/O) mouthful control testing power supply.Said floating unit contains: the measurement passage with (A/D) converter and leakage current sample circuit, the data receiver circuit that the multichannel remote control module constitutes reaches and the joining receiving device of this receiving circuit, the data transmit circuit that the multichannel remote control module constitutes reaches and the joining sending device of this transtation mission circuit, wherein: live wire test terminal is connected to the input end of analog signal of measuring (A/D) converter in the passage, the output terminal of data receiver circuit is attached to the controlled end of (A/D) converter, and (A/D) the data-signal output terminal of converter is attached to the input end of data transmit circuit.

Because the design has taked above-mentioned effective measures, so this instrument not only can comprehensive detection and is demonstrated each curve, static and dynamic performance parameter in high direct voltage method, the ac test method, and have: circuit structure is integrated, characteristics such as strong interference immunity, on-line working, handling safety.

Below in conjunction with accompanying drawing the design is elaborated:

First kind of Fig. 1, the electric theory diagram of " single chip microcomputer-single chip microcomputer " structure.The electrical schematic diagram of Fig. 2 .1 observing and controlling passage (C) in this structure; Measure the electrical schematic diagram of passage (A) in this structure of Fig. 2 .2;

The electric wiring diagram that the electric wiring diagram that this instrument of Fig. 3 takes the high-tension shielding method that the ground connection test product is detected, Fig. 4 take lv shielded method that non-ground connection test product is detected;

Second kind of Fig. 5, the electric theory diagram of " single chip microcomputer-multichannel remote control module+(V/F) conversion " structure, the electrical schematic diagram of Fig. 6 .1 observing and controlling passage (C) in this structure measured the electrical schematic diagram of passage (B) in this structure of Fig. 6 .2;

Fig. 7 the third, the electric theory diagram of " single chip microcomputer+multichannel remote control module-(A/D) converter " structure, the electrical schematic diagram of Fig. 8 observing and controlling passage (C) in this structure measured the electrical schematic diagram of passage (D) in this structure of Fig. 9;

Figure 10 is by the electric theory diagram of many floating units structure of first kind of structure and second kind of structure composition, the electrical schematic diagram of observing and controlling passage (F) in these compages of Figure 11;

Figure 12 leakage current sampler (CI), (CI ₁), (CI ₂), (CI ₃) electrical schematic diagram, the electrical schematic diagram of Figure 13 test voltage sampler (CU), Figure 14 reference voltage source (A.1), (B.1), (C.1), (F.1), electrical schematic diagram, the electrical schematic diagram of Figure 15 rectification circuit (A.2), (B.2), (C.2), (F.2).

" embodiment 1 " single chip microcomputer-single chip microcomputer " structure ", with reference to Fig. 1, Fig. 2 .1, Fig. 2 .2, Fig. 3, Fig. 4, Figure 12, Figure 13:

Actuation unit (Ma) comprises: the observing and controlling passage (C) with single chip microcomputer (MCUc) of band (A/D) converter, test voltage sampler (CU), data receiver circuit (Das) and with the joining receiving device of circuit (Das) (D ' as), data transmit circuit (Jaf) and with the joining sending device of circuit (Jaf) (J ' af), wherein: data transmit circuit (Jaf) links with an end pin (1c) of the serial line interface of single chip microcomputer (MCUc), and data receiver circuit (Das) links with another end pin (2c) of the serial line interface of single chip microcomputer (MCUc).The output terminal of test voltage sampler (CU) is attached to the input end (Cin) of observing and controlling passage (C), the controlled end (g) of sampler (CU) links with single chip microcomputer (MCUc) corresponding (I/O) mouth, the power switch (Kp) of single chip microcomputer (MCUc) corresponding (I/O) mouthful control testing power supply (Us).Actuation unit (Ma) also includes: operating switch (K), liquid crystal dot matrix display (LCD), with PC on-line interface and printer interface (RS), voice operation demonstrator (Y), they link with single chip microcomputer (MCUc) respectively.

Floating unit (Sa) has that shell (Ga) is isolated in shielding and by insulating power supply (UGa) power supply, it contains: measure passage (A), leakage current sampler (CI), data receiver circuit (Jas) and with the joining receiving device of circuit (Jas) (J ' as), data transmit circuit (Daf) and with the joining sending device of circuit (Daf) (D ' af).Wherein: data receiver circuit (Jas) links with an end pin (1a) of the serial line interface of single chip microcomputer (MCUa), and data transmit circuit (Daf) links with another end pin (2a) of the serial line interface of single chip microcomputer (MCUa).If single chip microcomputer (MCUa), (MCUc) adopt the chip (for example MCS8098) with (UART) serial line interface, said end pin (1a), (2c) are (RXD) end pin of this (UART) each chip, and end pin (2a), (1c) are (TXD) end pin of this (UART) each chip; Has (I if adopt ²C) (for example Philps8 * C552), said end pin (1a), (1c) are (I to the chip of Bus interface ²C) (SCL) of each chip end pin, end pin (2a), (2c) are (SDA) end pin of this (I2C) each chip.

Be connected in data path (Da), remote control path (Ja) between actuation unit (Ma) and the floating unit (Sa).The transmitting terminal of data path (Da) is that (D ' af), its receiving end are that (D ' as), the transmitting terminal of remote control path (Ja) are that (J ' af), its receiving end are receiving device (J ' as) to sending device to receiving device to sending device.

Said observing and controlling passage (C) also comprises: reference voltage source (C.1), rectification circuit (C.2), wherein: the output terminal of reference voltage source (C.1) is connected to (AD.0) mouth of single chip microcomputer (MCUc), the input end of rectification circuit (C.2) links with the input end (Cin) of observing and controlling passage (C) and (AD.1) mouth of single chip microcomputer (MCUc) simultaneously, and the output terminal of rectification circuit (C.2) is connected to (AD.2) mouth of single chip microcomputer (MCUc).Said measurement passage (A) also has: reference voltage source (A.1), rectification circuit (A.2), and wherein: the output terminal of reference voltage source (A.1) is attached to (AD.0) mouth of single chip microcomputer (MCUa); The input end of rectification circuit (A.2) links with the input end (Ain) of measurement passage (A) and (AD.2) mouth of single chip microcomputer (MCUa) simultaneously, and the output terminal of rectification circuit (A.2) is attached to (AD.1) mouth of single chip microcomputer (MCUa).

For the ground connection test product, this instrument can take " high-tension shielding method " to detect.At this moment, with isolate shielding terminal (Ga) that shell (Ga) links and be connected to high-pressure side (H) terminal of testing power supply (Us), floating unit (Sa) is in the high voltage position, (E) terminal ground connection, the ground far away side of test product (Rx) is connected to the live wire input terminal (La) of leakage current sampler (CI), and leakage current sampler (CI) is from the ground far away side-draw sample leakage current signal of test product like this.During test, single chip microcomputer (MCUc) carries out dual-machine communication with single chip microcomputer (MCUc) by data path (Da), remote control path (Ja), single chip microcomputer (MCUa) places appropriate position according to range selector (SWCI) in the output quantity control leakage current sampler (CI) of (A/D) converter, makes (A/D) converter be in high precision conversion work state.Single chip microcomputer (MCUa) will collect digital quantity and store in its (RAM), carry out being sent in the single chip microcomputer (MCUc) by path (Da), (Ja) with the serial code form after digital filtering handles; In actuation unit (Ma) lining, single chip microcomputer (MCUc) measures the test voltage value by test voltage sampler (CU), so just can calculate insulation resistance (Rx) value by following formula (1): $\mathrm{Rx}=\frac{\mathrm{Ro}(\mathrm{<figure-callout\; id="1"\; label="Ru"\; filenames="Y9521258500191.png,Y9521258500252.png"\; state="\{\{state\}\}">Ru</figure-callout>}1+\mathrm{Ru}2)}{\mathrm{<figure-callout\; id="2"\; label="Ru"\; filenames="Y9521258500252.png"\; state="\{\{state\}\}">Ru</figure-callout>}2}\&CenterDot;\frac{\mathrm{Un}}{\mathrm{Ux}}\&hellip;\&hellip;\left(1\right)$ In the formula: Rx---the insulating resistance value of test product to be measured (Rx),

Sample resistance value in Ro---the leakage current sampler (CI),

Ru ₁---test voltage divider resistance value,

Ru ₂---sample resistance value in the test voltage sampler (CU).

Un---the output voltage values of test voltage sampler,

Ux---the output voltage values of leakage current sampler (CI).

If what surveyed is to exchange leakage signal, also must be by measuring rectification circuit (A in the passage (A), 2) and observing and controlling passage (C) in rectification circuit (C, 2), carry out sending behind the precision rectifying (A/D) conversion to ac leakage current signal and alternating-current measurement voltage signal, single chip microcomputer calculates the interchange real effective according to following formula (2): $U=\sqrt{\frac{2}{3N}\underset{n=0}{\overset{N/2-1}{\mathrm{\&Sigma;}}}[U^2\left(2n\right)+2U^2(2n+1)]}\&hellip;\&hellip;\left(2\right)$ In the formula: U---the real effective of leakage current or test voltage,

N---sampling number,

U _(2n)---the sampled value of two integral multiples of sampling number N.

In order to improve the stability of instrument, each measurement process also changes the correction process later on over to, the reference voltage that is produced with reference voltage source (A.1), (C.1) carries out correcting measuring as input signal to instrument channel, and single chip microcomputer (MCUc) corrected value is in view of the above revised the result who measures process.

For non-ground connection test product, this instrument can take " lv shielded method " to detect.(H) terminal is attached to the ground far away side of test product (Rx), shielding terminal (Ga) links and ground connection with (E) terminal, floating unit (Sa) is in the low-voltage position, the near-earth side of test product (Rx) is attached on the terminal (La), and floating unit (Sa) is from the near-earth side-draw sample leakage current signal of test product (Rx) like this.Its measurement process and correction process are the same with above-mentioned " high-tension shielding method ".

[embodiment 2: " single chip microcomputer-multichannel remote control module+V/F conversion " structure] are with reference to Fig. 5, Fig. 6 .1, Fig. 6 .2, Figure 12, Figure 13:

Actuation unit (Mb) comprises: the data transmit circuit (Jbf) that have the observing and controlling passage (C), test voltage sampler (CU) of band (A/D) converter single chip microcomputer (MCUc), constitutes by the multichannel remote control module and with the joining sending device of circuit (Jbf) (J ' bf), data receiver circuit (Dbs) and with the joining receiving device of circuit (Dbs) (D ' bs), wherein: transtation mission circuit (Jbf) links with single chip microcomputer (MCUc) corresponding (I/O) mouth, and receiving circuit (Dbs) links with (timer/counter) mouthful (T) of single chip microcomputer (MCUc); The output terminal of test voltage sampler (CU) is attached to the input end (Cin) of observing and controlling passage (C), the controlled end (g) of sampler (CU) links with single chip microcomputer (MCUc) corresponding (I/O) mouth, the power switch (kP) of single chip microcomputer (MCUc) corresponding (I/O) mouthful control testing power supply (Us).Actuation unit (Sb) also includes: operating switch (K), liquid crystal dot matrix display (LCD), with PC on-line interface and printer interface (RS), voice operation demonstrator (Y), they link with single chip microcomputer (MCUc) respectively.

Floating unit (Sb) has shielding isolation shell (Gb) and is powered by insulating power supply (UGb), it contains: the measurement passage (B) with (V/F) transducer (B.3) and multi-way switch (SWb), leakage current sampler (CI), the data receiver circuit (Jbs) that constitutes by the multichannel remote control module and with the joining receiving device of circuit (Jbs) (J ' bs), data transmit circuit (Dbf) and with the joining sending device of circuit (Dbf) (D ' bf), wherein: the output terminal (VF) of measuring (V/F) transducer (B.3) in the passage (B) is attached to the input end of transtation mission circuit (Dbf); A part of output terminal pin of receiving circuit (Jbs) is attached to the controlled end (k) of measuring multi-way switch (SWb) in the passage (B), and another part output terminal pin of receiving circuit (Jbs) is attached to the controlled end (j) of leakage current sampler (CI).The output terminal of leakage current sampler (CI) is attached to the input end (Bin) of measuring passage (B).Said measurement passage (B) also includes reference voltage source (B.1), rectification circuit (B.2), wherein: reference voltage source (B.1) defeated by being connected to multi-way switch (SWb), rectification circuit (B.2) are plugged on multi-way switch (SWb) and (V/F) between the transducer (B.3).

Be connected in data path (Db), remote control path (Jb) between actuation unit (Mb) and the floating unit (Sb).The transmitting terminal of data path (Db) is that (D ' bf), its receiving end are that (D ' bs), the transmitting terminal of remote control path (Jb) are that (J ' bf), its receiving end are receiving device (J ' bs) to sending device to receiving device to sending device.

The program control signal of single chip microcomputer (MCUc) is by the multi-way switch (SWb) of path (Jb) control survey passage (B) in the actuation unit (Ma), with the simulating signal timesharing of reference voltage source (B.1) and leakage current sampler (CI) output send in (V/F) transducer (B.3) and be transformed into the digitizing train of impulses, send in the single chip microcomputer (MCUc) through path (Db) and carry out data processing; Single chip microcomputer (MCUc) also samples the test voltage signal simultaneously; The same with embodiment 1, single chip microcomputer (MCUc) just can calculate parameters and curvilinear characteristic value.In this process, single chip microcomputer (MCUc) carries out the automatic conversion of range also according to the received signal size by switch (SWCI) in path (Jb) the control leakage current sampler (CI).If the test AC signal is carried out (V/F) conversion after then sending rectification circuit (B.2) precision rectifying earlier again.

[embodiment 3: " single chip microcomputer+multichannel remote control module (A/D) converter " structure] are with reference to Fig. 7, Fig. 8, Fig. 9, Figure 12:

Actuation unit (Md) comprises: the observing and controlling passage (C) with band (A/D) converter single chip microcomputer (MCUc), test voltage sampler (CU), the data transmit circuit (Jdf) that the multichannel remote control module constitutes and with the joining sending device of circuit (Jdf) (J ' df), the data receiver circuit (Dds) that the multichannel remote control module constitutes and with the joining receiving device of circuit (Dds) (D ' ds), wherein: transtation mission circuit (Jbf) and single chip microcomputer (MCUc) partly (I/O) mouth link, and receiving circuit (Dds) links with another part (I/O) mouth of single chip microcomputer (MCUc).Actuation unit (Sd) also includes: operating switch (K), liquid crystal dot matrix display (LCD), with PC on-line interface and printer interface (RS), voice operation demonstrator (Y), they link with single chip microcomputer (MCUc) respectively.

Be connected in data path (Dd), remote control path (Jd) between actuation unit (Md) and the floating unit (Sd).The transmitting terminal of data path (Dd) is that (D ' df), its receiving end are that (D ' ds), the transmitting terminal of remote control path (Jd) are that (J ' df), its receiving end are receiving device (J ' ds) to sending device to receiving device to sending device.

Floating unit (Sd) has that shell (Gd) is isolated in shielding and by insulating power supply (UGd) power supply, it includes: measure data receiver circuit (Jds) that passage (W), multichannel remote control module constitute and with its joining receiving device (data transmit circuit (Ddf) that J ' ds), multichannel remote control module constitute and with its joining sending device (D ' df).Said measurement passage (W) keeps (HLOD) switch (SWd2) and data-out port (DOUT) to constitute by: automatic range formula double integrator (A/D) converter (W.1), leakage current sample circuit (W.2), rectification circuit (W.3), (DC/AC) switch (SWd1), data.Wherein: live wire test terminal (Ld) is attached to the input end (Din) of measuring passage (W), the output terminal pin of receiving circuit (Jds) is attached to the controlled ports (ADJ) of (A/D) converter (W.1), (A/D) data-out port (DOUT) of converter (W.1) is attached to the parallel data input port of transtation mission circuit (Ddf), and all the other connecting relations as shown in Figure 9.

The program control signal of single chip microcomputer (MCUc) is by path (Jb) control controlled ports (ADG) in the actuation unit (Md), (A/D) converter (W.1) is matched with leakage current sample circuit (W.2) to carry out the automatic range conversion and enters the peek state, single chip microcomputer (MCUc) keeps (HOLD) switch (SWd2) to enter the data hold mode through path (Jd) control data then, data is sent into path (Dd) from port (DOUT) be sent to the single chip microcomputer (MCUc); Single chip microcomputer (MCUc) also samples the test voltage signal simultaneously, and the same with embodiment 1, single chip microcomputer just can calculate parameters and curve map eigenwert.If what surveyed is AC signal, single chip microcomputer (MCUc) is by path (Jd) conversion (DC/AC) switch (SWd1), carries out (A/D) conversion again after making (A/D) converter through rectification circuit (W.2) rectification.

Above-mentioned automatic range formula double integrator (A/D) converter (W.1) can adopt (TSC 815) integrated package.If do not adopt this automatic range formula and adopt conventional (A/D) converter (for example ICL7136), can make leakage current sample circuit (W.2) into a fixedly range by the multirange of said structure, the indication range that makes instrument is 0-1999uA, this indication range is enough to the test of general power equipment, but this structure is for the measuring accuracy of the high value insulation resistance difference that seems.Also can take another kind of way: the structure that Fig. 9 leakage current sample circuit (W.2) is made into the leakage current sampler (CI) of Figure 12, the controlled end (J) of sampler (CI) is attached to receiving circuit (Jds), the sampling quantity size of (A/D) converter (W.1) is carried out range by path (Jd) FEEDBACK CONTROL leakage current sampler (CI) and is changed automatically in the floating unit (W) that is sent according to path (Dd) by single chip microcomputer (MCUc).The design people thinks that back two structures are come advancedly not as the structure of this multi-functional integrated device of previous employing automatic range formula (A/D) converter, therefore back two structures are not described in further detail.

" embodiment 4: many floating units system of mixed structure " are with reference to Figure 10, Figure 11, Figure 12, Figure 13:

Actuation unit (M) includes: the observing and controlling passage (F) with single chip microcomputer (MCUc) of band (A/D) converter, leakage current sampler (CI), test voltage sampler (CU), data receiver circuit (Das), (Dbs) and respectively with circuit (Das), (Dbs) joining receiving device (D ' as), (D ' bs), data transmit circuit (Jaf) and with the joining sending device of circuit (Jaf) (J ' af), data transmit circuit (Jbf) that the multichannel remote control module constitutes and the sending device that connects with circuit (Jbf) (J ' bf), wherein: receiving circuit (Das), transtation mission circuit (Jaf) respectively with the serial port (RXD) of single chip microcomputer (MCUc), (TXD) link multichannel remote control module (Jbf), data receiver circuit (Dbs) respectively with (I/O) of single chip microcomputer (MCUc) mouthful, (timer/counter) mouthful (TO) links.Actuation unit (Ma) also includes: operating switch (K), liquid crystal dot matrix display (LCD), with interface (RS), the voice operation demonstrator (Y) of PC on-line interface and printer, they link with single chip microcomputer (MCUc) respectively.

Observing and controlling passage (F) also comprises: reference voltage source (F1), rectification circuit (F2), (F3 wherein: the output terminal of reference voltage source (F1) is attached to (AD.0) mouthful of single chip microcomputer (MCUc); (AD.1) of the output terminal of test voltage sampler (CU) and single chip microcomputer (MCUc) mouthful of input end that links and be connected to rectification circuit (F.2), the output terminal of rectification circuit (F.2) are connected to (AD.2) mouth of single chip microcomputer (MCUc); (AD.3) of the output terminal of leakage current sampler (CI3) and single chip microcomputer (MCUc) mouthful of input end that links and be connected to rectification circuit (F.3), (AD.4) of the output terminal of rectification circuit (F.3) and single chip microcomputer (MCUc) mouthful links.

The structure of the floating unit of present embodiment (Sa), (Sb) is the same with (Sa), (Sb) among the embodiment 1,2.Leakage current sampler (CI ₁), (CI ₂), (CI ₃) the same with the structure of sampler (CI) among the embodiment 1,2.Its measurement process and correction process be the same with embodiment 1,2 also, just do not given unnecessary details here.

Three leakage current sampler (CI of present embodiment ₁), (CI ₂), (CI ₃) and test voltage sampler (CU) constituted a plurality of measurement input ports, this is very useful at some special occasions test of the water-cooled generator on weak insulation backwater road (for example for).

Shielding described in above-mentioned four embodiment isolate shell (SGa), (SGb), (SGd) can with sheet metal make and with the insulator support with isolate all around.Said insulating power supply (UGa), (UGb), (UGd) constitute with prior art: it can be an isolating transformer, AC low-tension is organized in its secondary output more, through rectification, voltage stabilizing supply floating unit, or a switching power supply that has isolating transformer, require should be able to tolerate the test ceiling voltage every primary and secondary dielectric strength of high transformer; Can use the accumulator that is contained in the floating unit or battery and switching power supply is transformed into the multiple voltage supply circuit in this unit with being contained in for the occasion that requires higher test voltage.Switching power supply can be selected commercially available off-the-shelf (for example ERICSSON series) for use.

Embodiment 1,2,4, middle leakage current sampler (CI), (CI ₁), (CI ₂), (CI ₃) electric principle be shown in Figure 12, integrated package among this figure (T1) is made of (5G7650), multi-way switch (SWCI) is with (CD4052) integrated package.The electric principle of test voltage sampler (CU) is shown in Figure 13, and it is made of voltage divider (RV1)+(RU2), and multi-way switch (SWCU) can be used (CD4052).Leakage current sampler, test voltage sampler also can be made of precision current mutual inductor and accurate voltage mutual inductor respectively.Reference voltage source (A.1), (B.1), (C.1), (F.1), can be by constitute integrated package (T among Figure 14 according to shown in Figure 14 ₂) usefulness (AD584) chip.Rectification circuit (A.2), (B.2), (C.2), (F.2), (F.3) are made of Figure 15, (T among this figure ₂) available (5G7650).

The hyperchannel infrared remote controller of the multichannel remote control module (Jbf) among the embodiment 2,3,4, (Jbs), (Jds), (Jdf), (Ddf), (Dds) available frequency division system or time-devision system, its ready-made circuit is a lot, for example can adopt Beijing. People's Telecon Publishing House .93.12 version. and the circuit in " infrared ray and ultra-sonic remote control " book among the p214-p217.Transtation mission circuit (Jaf), (Daf), (Dbf) and receiving circuit (Jas), (Das), (Dbs) all can be made of (NE555) integrated package among the embodiment 1,2,4.Among above-mentioned four embodiment, sending device (J ' af), (D ' af), (J ' bf), (D ' bf), (J ' df), (luminotron of D ' df), receiving device (J ' as), (D ' as), (J ' bs), (D ' bs), (J ' ds), (photosensitive tube of D ' ds).Path (Da), (Db), (Dd), (Ja), (Jb), (Jd) are except adopting the photoconduction formula, can also use other conductive form, for example radiowave conduction-type or ultrasound wave conduction-type, as long as this correspondingly use above-mentioned sending device, receiving device instead mini radio integrated package (FDD400) or micro-ultrasonic wave sensor (SE05-40R-40T) by luminotron, photosensitive tube.

Used single chip microcomputer (MCUc) among above-mentioned four embodiment, (MCUa) can be with the single chip microcomputer that has (A/D) converter, for example (MCS8098).Also can adopt the single chip microcomputer of not being with (A/D) converter, for example (MCS8031), but must in measuring passage (C), correspondingly increase (A/D) converter and multicircuit switch, its physical circuit can adopt the typical circuit in the relevant single chip microcomputer books.(V/F) transducer among the embodiment 2,4 can be used (VFC32).Receiving circuit (Dbs) can be not link with (timer/counter) mouthful (T) of single chip microcomputer (MCVc) yet among actuation unit (Mb) among the embodiment 2,4, (M), and links with the hsi port (HSI) of single chip microcomputer (MCVc).

Testing power supply (Us) can adopt the interchange or the DC test power supply of prior art among above-mentioned four embodiment, can add circuit that a relay or controllable silicon constitute on its power switch (Kp), be controlled the switch and the voltage climbing speed of its power supply by single chip microcomputer (MCUc).Described operating switch (K), liquid crystal dot matrix display (LCD), all can use off-the-shelf with PC on-line interface and printer interface (RS), voice operation demonstrator (Y) etc., they can adopt the circuit of being introduced in the books and periodicals magazine of existing relevant single chip microcomputer technology application with the connecting relation of single chip microcomputer (MCUc), because the data of this respect is easier to obtain, just do not exemplified here.

Claims (8)

1, a kind of High-Voltage Insulation dynamic perfromance detector, comprise testing power supply, operating switch, test circuit, it is characterized in that it has: one zero actuation unit (Ma) that is connected to testing power supply (Us) low pressure end (E), at least one have shielding isolate shell (Ga) and by the floating unit (Sa) of insulating power supply (UGa) power supply and be connected in actuation unit (Ma) and floating unit (Sa) between data path (Da), remote control path (Ja);

Said actuation unit (Ma) contains: the observing and controlling passage (C) with band (A/D) converter single chip microcomputer (MCUc), display (LCD), test voltage sampler (CU), data transmit circuit (Jaf) and with the joining sending device of circuit (Jaf) (J ' af), data receiver circuit (Das) and with the joining receiving device of circuit (Das) (D ' as), wherein: data transmit circuit (Jaf) links with an end pin (1c) of the serial line interface of single chip microcomputer (MCUc), and data receiver circuit (Das) links with another end pin (2c) of the serial line interface of single chip microcomputer (MCUc); Display (LCD) links with single chip microcomputer (MCUc); The output terminal of test voltage sampler (CU) is attached to the input end (Cin) of observing and controlling passage (C), the controlled end (g) of single chip microcomputer (MCUc) corresponding (I/O) mouthful control sampler (CU), and the power switch (Kp) of single chip microcomputer (MCUc) corresponding (I/O) mouthful control testing power supply (Us);

Said floating unit (Sa) includes: have single chip microcomputer (MCUc) measurement passage (A), leakage current sampler (CI), data receiver circuit (Jas) and with the joining receiving device of circuit (Jas) (J ' as), data transmit circuit (Daf) and with the joining sending device of circuit (Daf) (D ' af), wherein: receiving circuit (Jas) links with an end pin (1a) of the serial line interface of single chip microcomputer (MCUc), and transtation mission circuit (Daf) links with another end pin (2a) of the serial port of single chip microcomputer (MCUc); The output terminal of leakage current sampler (CI) is attached to the input end (Ain) of measuring passage (A), the controlled end (j) of single chip microcomputer (MCUc) corresponding (I/O) mouthful control sampler (CI).

2, detector according to claim 1, it is characterized in that said observing and controlling passage (C) also comprises: reference voltage source (C.1), rectification circuit (C.2), wherein: the output terminal of reference voltage source (C.1) is connected to (AD.0) mouth of single chip microcomputer (MCUc), the input end of rectification circuit (C.7) links rectified current with the input end (Cin) of observing and controlling passage (C) and (AD.1) mouth of single chip microcomputer (MCUc) simultaneously

3, detector according to claim 1, it is characterized in that said measurement passage (A) also has: reference voltage source (A.1), rectification circuit (A.2), wherein: the output terminal of reference voltage source (A.1) is attached to (AD.0) mouth of single chip microcomputer (MCUa); The input end of rectification circuit (A.) links with the input end (Ain) of measurement passage (A) and (AD.2) mouth of single chip microcomputer (MCUa) simultaneously, and the output terminal of rectification circuit (A.2) is attached to (AD.1) mouth of single chip microcomputer (MCUa).

4, a kind of High-Voltage Insulation dynamic perfromance detector, comprise testing power supply, operating switch, test circuit, it is characterized in that it has: one zero actuation unit (Mb) that is connected to testing power supply (Us) low pressure end (E), at least one have shielding isolate shell (Gb) and by the floating unit (Sb) of insulating power supply (UGb) power supply and be connected in actuation unit (Mb) and floating unit (Sb) with data path (Db), remote control path (Jb);

Said actuation unit (Mb) contains: the observing and controlling passage (C) with band (A/D) converter single chip microcomputer (MCUc), display (LCD), test voltage sampler (CU), the data transmit circuit (Jbf) that constitutes by the multichannel remote control module and with the joining sending device of circuit (Jbf) (J ' bf), data receiver circuit (Dbs) and with the joining receiving device of circuit (Dbs) (D ' bs), wherein: transtation mission circuit (Jbf) links with single chip microcomputer (MCUc) corresponding (I/O) mouth, and receiving circuit (Dbs) links with (timer/counter) mouthful (T) of single chip microcomputer (MCUc); Display (LCD) links with single chip microcomputer (MCUc); The output terminal of test voltage sampler (CU) is attached to the input end (Cin) of observing and controlling passage (C), the controlled end (g) of single chip microcomputer (MCUc) corresponding (I/O) mouthful control sampler (CU), and the power switch (kP) of single chip microcomputer (MCUc) corresponding (I/O) mouthful control testing power supply (Us);

Said floating unit (Sb) contains: the measurement passage (B) with (V/F) transducer (B.3) and multi-way switch (SWb), leakage current sampler (CI), the data receiver circuit (Jbs) that constitutes by the multichannel remote control module and with the joining receiving device of circuit (Jbs) (J ' bs), data transmit circuit (Dbf) and with the joining sending device of circuit (Dbf) (D ' bf), wherein: the output terminal (VF) of measuring (V/F) transducer (B.3) in the passage (B) is attached to the input end of transtation mission circuit (Dbf), a part of output port of receiving circuit (Jbs) is attached to the controlled end (k) of measuring multi-way switch (SWb) in the passage (B), and another part output port of receiving circuit (Jbs) is attached to the controlled end (j) of leakage current sampler (CI).The output terminal of leakage current sampler (CI) is attached to the input end (Bin) of measuring passage (B).

5, according to the described detector of claim 4, it is characterized in that said measurement passage (B) also includes: reference voltage source (B.1), rectification circuit (B.2), wherein: the output terminal of reference voltage source (B.1) is connected to multi-way switch (SWb), and rectification circuit (B.7) is plugged on multi-way switch (SWb) and (V/F) between the transducer (D.3).

6, a kind of High-Voltage Insulation dynamic perfromance detector, comprise testing power supply, operating switch, test circuit, it is characterized in that it has: one zero actuation unit (Md) that is connected to testing power supply (Us) low pressure end (E), at least one have shielding isolate shell (Gd) and by the floating unit (Sd) of insulating power supply (UGd) power supply and be connected in actuation unit (Md) and floating unit (Sd) between data path (Dd), remote control path (Jd);

Said actuation unit (Md) contains: the observing and controlling passage (C) with band (A/D) converter single chip microcomputer (MCUc), display (LCD), test voltage sampler (CU), the data receiver circuit (Dds) that constitutes by the multichannel remote control module and with the joining receiving device of circuit (Dds) (D ' ds), the data transmit circuit (Jdf) that constitutes by the multichannel remote control module and with the joining sending device of circuit (Jdf) (J ' df), wherein: transtation mission circuit (Jdf) links with (I/O) mouth of single chip microcomputer (MCUc) part, and receiving circuit (Dds) links with single chip microcomputer (MCUc) another part (I/O) mouth; Display (LCD) links with single chip microcomputer (MCUc); The output terminal of test voltage sampler (CU) is attached to the input end (Cin) of the logical control of observing and controlling (C), the controlled end (g) of single chip microcomputer (MCUc) corresponding (I/O) mouthful control sampler (CU), and the power switch (Kp) of single chip microcomputer (MCUc) corresponding (I/O) mouthful control testing power supply (Us).

Said floating unit (Sd) contains: the measurement passage (W) with (A/D) converter (W.1) and leakage current sample circuit (W.2), the data receiver circuit (Jds) that the multichannel remote control module constitutes and with the joining receiving device of circuit (Jds) (J ' ds), the data transmit circuit (Ddf) that the multichannel remote control module constitutes and with the joining sending device of circuit (Ddf) (D ' df), wherein: live wire test terminal (Ld) is attached to the input end (Din) of measuring passage (W), the output terminal of receiving circuit (Jds) is attached to the controlled end (ADG) of (A/D) converter (W.1), and (A/D) data-out port (DOUT) of converter (W.1) is attached to transtation mission circuit (Ddf).

7, detector according to claim 6 is characterized in that (A/D) converter (W.1) is a kind of automatic range formula double integrator (A/D) converter in the said measurement passage (W).

8, according to claim 1 or 4 or 6 described detectors, it is characterized in that said actuation unit (Ma), (Mb), (Md) also include: with PC on-line interface and printer interface (Rs), voice operation demonstrator (Y), they link with single chip microcomputer (MCUc) respectively.

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