CN203965489U - A kind of shelf depreciation high voltage pulse generation device - Google Patents
A kind of shelf depreciation high voltage pulse generation device Download PDFInfo
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- CN203965489U CN203965489U CN201420324322.7U CN201420324322U CN203965489U CN 203965489 U CN203965489 U CN 203965489U CN 201420324322 U CN201420324322 U CN 201420324322U CN 203965489 U CN203965489 U CN 203965489U
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Abstract
The utility model discloses a kind of shelf depreciation high voltage pulse generation device, comprise that external pulse detection module, trigger mode arrange module, AUTO pulse generation module, EXT/AUTO modular converter, pulsewidth range control module, pulse-width adjustment output module, driving circuit, DC/DC conversion module, HV pulse output module.The width of the high-voltage pulse needing according to user arranges pulsewidth range control module, under regulation range, by adjusting pulsewidth, adjust output module, export needed pulsewidth, pulse signal carries out power amplification by driving circuit and drives HV pulse output module, can obtain the high-voltage pulse of required pulsewidth at equipment output end mouth.Initiatively to the high voltage electric power equip ment moving, apply and inject the adjustable high-voltage pulse of pulsewidth, by the office of being used in conjunction with, put testing tool, signal condition after this high-voltage pulse is propagated in high-tension apparatus is analyzed, state of insulation grade and the defect of diagnosis prediction high-tension apparatus.
Description
Technical field
The utility model relates to a kind of shelf depreciation high voltage pulse generation device detecting in the state of insulation to high-tension apparatus.
Background technology
Instrument for measuring partial discharge, is called for short PD meter, is the indispensable instrument of the apparatus insulated situation of detecting electric.Traditional PD meter generally adopts Wiring type, during measurement, need to, by Devices to test power-off, to Devices to test pressurization, then measure to one's heart's content condition of Devices to test office; This mode needs Devices to test out of service, is unfavorable for the continuous working of Devices to test; Need in addition to add high pressure to Devices to test, can cause damage to a certain degree to the performance of Devices to test.Novel PD meter generally adopts the mode of the couplings such as electric capacity, inductance to measure to one's heart's content condition of Devices to test office; When this mode is measured, do not need Devices to test power-off, do not affect Devices to test continuous working, do not need Devices to test to add high pressure, can realize measuring without impact Devices to test work simultaneously.Therefore, adopt the novel PD meter of new-type detection principle once release, be just subject to extensive concern and use.
In actual office, put in test, these two types of testers are all the passive high voltage electric power equip ments that goes to detect and analyze, namely in high-tension apparatus, must there is office to put while occurring, just can use these two types of testers to go to detect and the state of insulation of analyzing high voltage electric power equip ment.In high-tension apparatus, do not have office to put to occur or have office to put to occur but office is high-volume less and while being covered by other undesired signals, can initiatively to the high voltage electric power equip ment moving, inject the adjustable high-tension pulse of pulsewidth and bring simulation partial discharge pulse, then testing tool is put in the office of being used in conjunction with, and under any condition, all can the state of insulation of high-tension apparatus be analyzed and be diagnosed.This is that the new method detecting with analysis is put in a kind of office of expansion at present.
Current detection method for local discharge shows following many deficiencies in actual production test job:
1) because adopting Wiring type, traditional PD meter measures shelf depreciation, Wiring type PD meter has many drawbacks, being apparent that most need to be by the device powers down of moving, to one's heart's content condition of its office is measured in pressurization, this not only can the continuous running status of breaking device, to producing, impact, and pressurization has also damaged equipment performance to a certain extent to equipment.
2) novel PD meter generally adopts the mode of the couplings such as electric capacity, inductance to measure to one's heart's content condition of Devices to test office, although solved the problem that traditional PD meter need be tested under equipment power down mode, can under electriferous state, carry out test job, but can only passively to charging equipment, carry out testing.
3) no matter tradition or novel PD meter, carrying out office while putting testing, all can be because of efficiency and the accuracy rate of the disturbing effect detection of on-the-spot complicated electromagnetic environment, the analysis and diagnosis that even can make the mistake.So the result recording is often not ideal enough.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, a kind of shelf depreciation high voltage pulse generation device is proposed, can by special device, initiatively to the high voltage electric power equip ment moving, inject the adjustable high-voltage pulse of pulsewidth at the scene, be used in conjunction with office and put testing tool, the state of insulation of high-tension apparatus is analyzed and diagnosed.
Technical scheme: for achieving the above object, the technical solution used in the present invention is:
A shelf depreciation high voltage pulse generation device, comprises that external pulse detection module, trigger mode arrange module, AUTO pulse generation module, EXT/AUTO modular converter, pulsewidth range control module, pulse-width adjustment output module, driving circuit, DC/DC conversion module, HV pulse output module and storage battery power supply module;
Described external pulse detection module for detection of and the pulse signal of the outside input of conditioning, and the amplitude that conditioning the is obtained pulse signal that is 5V is input to trigger mode module is set;
Described trigger mode arranges module and for required high-voltage pulse is set, is synchronized with upper edge or the lower edge of external pulse, and the pulse after output is synchronously to EXT/AUTO modular converter;
Described AUTO pulse generation module is for generation of internal pulse signal, and outputs to EXT/AUTO modular converter; Described internal pulse signal is that amplitude is the square-wave pulse signal of 5V;
Described EXT/AUTO modular converter is for selecting and export external pulse or internal pulses to pulsewidth range control module;
Described pulsewidth range control module is for carrying out width modulation to the pulse signal receiving, and selects and output pulse width is that the pulse signal of 0.1～1.1 μ s or 1.1～11 μ s is to pulse-width adjustment output module;
Described pulse-width adjustment output module is for carrying out pulse-width regulated to the pulse signal receiving, and in output pulse width value range, a certain definite pulse width signal is to driving circuit;
Described driving circuit for outputing to HV pulse output module by the pulse signal amplitude transformation of reception after 15V;
Described DC/DC conversion module is for after boosting the low-voltage DC of storage battery power supply module output, and output voltage is to HV pulse output module;
Under the driving of described HV pulse output module for the pulse signal in described driving circuit output, according to the voltage of described DC/DC conversion module output, output high-voltage pulse.
As preferred version of the present invention, described external pulse detection module comprises that model is IC3 transceiver, resistance R 1, resistance R 2, resistance R 3, diode D3, diode D4 and the triode Q1 of ST485; Wherein, described diode D1, diode D2 forward oppositely access after connecting between described powered battery module+5V output terminal and ground again, described external pulse signal is by resistance R 1, resistance R 2 dividing potential drops, the base stage of resistance R 1 and 2 points of common connection while of resistance R connecting triode Q1 and the points of common connection of diode D1 and diode D2, the emitter of described triode Q1 connects 6 pins of IC3 transceiver, the full sized pules signal that 2 pin output amplitudes of IC3 transceiver are 5V.
As preferred version of the present invention, described trigger mode arranges module and comprises XOR gate, resistance, electric capacity and switch; After described resistance, capacitances in series, by switch, access an input end of XOR gate, another input end of the pulse signal access XOR gate after described shaping, the pulse signal after described XOR gate output terminal output is synchronous.
Further, described pulsewidth range control module comprises relay, electric capacity, changes the electric capacity of place in circuit different capabilities by described relay, thereby changes the value of the time constant RC of circuit, realizes the control of pulsewidth range.
Further, described pulse-width adjustment output module comprises comparer, Resistor-Capacitor Unit, pulse signal after shaping conversion charges by Resistor-Capacitor Unit, at capacitance cathode, form a time dependent voltage signal increasing progressively, the end of oppisite phase of this voltage signal access comparer, the in-phase end of comparer is connected the adjustable voltage signal that overpotential device is controlled, and the pulse signal of certain pulsewidth is exported in two signal comparisons at output terminal.
Further, described HV pulse output comprises speed-sensitive switch triode, high-frequency transformer, the output of pulse signal of described driving circuit output is to the grid of speed-sensitive switch triode, the former limit of high-frequency transformer connects the drain electrode of described DC/DC conversion module output terminal and speed-sensitive switch triode, high-frequency transformer secondary output high-voltage pulse.
Further, also comprise battery voltage detection module, for the voltage of accumulator is carried out to sample detecting.
Beneficial effect: shelf depreciation high voltage pulse generation device of the present utility model, adopt electric capacity or inductive coupling mode high-voltage pulse signal to be initiatively injected into the power equipment of analysis to be detected, under the condition of normal operation that does not affect Devices to test, break through existing office and put the condition restriction of detecting instrument to Devices to test, improve detection efficiency and accuracy rate under severe electromagnetic environment, avoided the analysis and diagnosis that equipment to be checked is made the mistake simultaneously.
The width of the high-voltage pulse needing according to user arranges pulsewidth range control module, under regulation range, by adjusting pulsewidth, adjust output module, export needed pulsewidth, pulse signal carries out power amplification by driving circuit and drives HV pulse output module, can obtain the high-voltage pulse of required pulsewidth at equipment output end mouth.Adopt electric capacity or inductive coupling mode high-voltage pulse signal to be initiatively injected into the power equipment of analysis to be detected, by the office of being used in conjunction with, put testing tool, signal condition after this high-voltage pulse is propagated in high-tension apparatus is analyzed, state of insulation grade and the defect of diagnosis prediction high-tension apparatus.By active injected pulse, can realize electrical equipment isolation completely with Devices to test, so easy-to-operate; And in HV pulse output, adopted speed-sensitive switch triode as on-off circuit in this case, the rising edge of high-voltage pulse is stabilized in 7-8ns, and pulse width is stablized adjustable, so pulse signal is stable, be easy to identification, improved detection efficiency and accuracy rate under severe electromagnetic environment.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is the circuit diagram of external pulse detection module;
Fig. 3 is pulsewidth range control modular circuit connection layout;
Fig. 4 is the circuit connection diagram of pulse-width adjustment output module;
Fig. 5 is the circuit diagram of HV pulse output.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, a shelf depreciation high voltage pulse generation device, comprises that external pulse detection module, trigger mode arrange module, AUTO pulse generation module, EXT/AUTO modular converter, pulsewidth range control module, pulse-width adjustment output module, driving circuit, DC/DC conversion module, HV pulse output module, storage battery power supply module and battery voltage detection module.Wherein:
External pulse detection module for detection of and the pulse signal of the outside input of conditioning, and the amplitude that conditioning the is obtained pulse signal that is 5V is input to trigger mode module is set.As shown in Figure 2, external pulse detection module comprises IC3 transceiver, resistance R 1, resistance R 2, resistance R 3, diode D3, diode D4 and triode Q1.Wherein, diode D1, diode D2 forward oppositely access after connecting between powered battery module+5V output terminal and ground again.External pulse signal passes through resistance R 1, resistance R 2 dividing potential drops, resistance R 1 and the base stage of 2 points of common connection while of resistance R connecting triode Q1 and the points of common connection of diode D1 and diode D2.The emitter of triode Q1 connects 6 pins of IC3 transceiver, the full sized pules signal that 2 pin output amplitudes of IC3 transceiver are 5V.
Trigger mode arranges module and for required high-voltage pulse is set, is synchronized with upper edge or the lower edge of external pulse, and exports pulse to EXT/AUTO modular converter.Trigger mode arranges module and comprises XOR gate, resistance, electric capacity; Resistance, electric capacity access an input end of XOR gate by switch, another input end of external pulse signal access XOR gate after shaping, by switch, control the level state of an input end of access XOR gate, make XOR gate output at two states down conversion.
AUTO pulse generation module is for generation of internal pulse signal, and outputs to EXT/AUTO modular converter, and this internal pulse signal is that amplitude is the square-wave pulse signal of 5V.AUTO pulse generation module comprises 555 timers and Resistor-Capacitor Unit, for generation of the square-wave pulse signal of 10Hz.
EXT/AUTO modular converter is for selecting and export external pulse or internal pulses to pulsewidth range control module.EXT/AUTO modular converter designs based on Sheffer stroke gate, controls the input state of Sheffer stroke gate by switch, realizes the conversion selection that AUTO pulse generation module and trigger mode arrange module output.
Pulsewidth range control module is for carrying out width modulation to the pulse signal receiving, and selects and output pulse width is that the pulse signal of 0.1～1.1 μ s or 1.1～11 μ s is to pulse-width adjustment output module.Pulsewidth range control module, based on relay design, changes the electric capacity of place in circuit different capabilities by relay, thereby changes the value of the time constant RC of circuit, realizes the control of pulsewidth range; According to the settings of time constant RC, can realize 0-1.1 μ s and two grades of ranges of 1-11 μ s.Pulsewidth range control modular circuit connection layout as shown in Figure 3, by regulating the resistance of adjustable resistance VR3, the in-phase input end voltage of linear regulation follower IC2-2, the in-phase input end voltage of IC3-2 changes with the variation of adjustable resistance VR3 simultaneously, two input ends of IC3-2 are done voltage ratio, at the output terminal of IC4-2, export the voltage that changes pulsewidth with adjustable resistance VR3.
Pulse-width adjustment output module is for carrying out pulse-width regulated to the pulse signal receiving, and in output pulse width value range, a certain definite pulse width signal is to driving circuit.The device design based on the comparison of pulse-width adjustment output module, pulse signal after shaping conversion charges by Resistor-Capacitor Unit, at capacitance cathode, form a time dependent voltage signal increasing progressively, the end of oppisite phase of this voltage signal access comparer, the in-phase end of comparer is connected the adjustable voltage signal that overpotential device is controlled, two signal comparisons, export the pulse signal of certain pulsewidth at output terminal; In range ability, can realize step-less adjustment.The circuit connection diagram of pulse-width adjustment output module as shown in Figure 4, by changing the level state of WIDTH1 port, realize the electric capacity that changes access RC charge circuit, thereby the inverting input of realizing at IC3-2 is reaching 2 kinds of different times under identical voltage condition, do voltage ratio with the in-phase input end of IC3-2 again, realize the control of two kinds of two kinds of pulse widths.
Driving circuit is for the pulse signal amplitude transformation of reception is outputed to HV pulse output module after 15V, for realizing the driving to the high amplitude of high-voltage pulse and the output of fast-changing edge.
DC/DC conversion module is for after boosting the low-voltage DC of storage battery power supply module output, and output voltage is to HV pulse output module.
Under the driving of HV pulse output module for the pulse signal in driving circuit output, according to the voltage of DC/DC conversion module output, output high-voltage pulse.As shown in Figure 5, HV pulse output comprises speed-sensitive switch triode, high-frequency transformer.The turnable pulse width of driving circuit output drives signal to output to the grid of speed-sensitive switch triode, the former limit of high-frequency transformer connects the drain electrode of DC/DC conversion module output terminal and speed-sensitive switch triode, by high-frequency transformer, is transformed to turnable pulse width high-voltage pulse output.
Storage battery power supply system, installs the voltage of required various grades for generation of this.Battery voltage detection module is for carrying out sample detecting to the voltage of accumulator.
Said apparatus in use, first as required the trigger source of exporting as triggering high-voltage pulse by EXT/AUTO modular converter choice for use external pulse or internal pulses, the width of the high-voltage pulse needing according to user again arranges pulsewidth range control module, under regulation range, by adjusting pulsewidth, adjust output module, export needed pulsewidth, pulse signal carries out power amplification by driving circuit and drives HV pulse output module, can obtain the high-voltage pulse of required pulsewidth at equipment output end mouth.This high-voltage pulse can be injected into operating power equipment or cable by capacitive coupling or inductive coupling probe, and detecting instrument is put in the office of being used in conjunction with just can carry out diagnosis and the analysis of state of insulation to power equipment or cable easily.Said apparatus adopts electric capacity or inductive coupling mode high-voltage pulse signal to be initiatively injected into the power equipment of analysis to be detected, under the condition of normal operation that does not affect Devices to test, break through existing office and put the condition restriction of detecting instrument to Devices to test, improve detection efficiency and accuracy rate under severe electromagnetic environment, avoided the analysis and diagnosis that equipment to be checked is made the mistake simultaneously.This case has adopted electric capacity or inductive coupling mode high-voltage pulse signal to be initiatively injected into the power equipment of analysis to be detected, realizes electrical equipment isolation completely with Devices to test, so easy-to-operate; And this case has adopted supper-fast field effect transistor as on-off circuit, and the rising edge of high-voltage pulse is stabilized in 7-8ns, and pulse width is stablized adjustable, so pulse signal is stable, be easy to identification, improved detection efficiency and accuracy rate under severe electromagnetic environment.
The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. a shelf depreciation high voltage pulse generation device, is characterized in that: comprise that external pulse detection module, trigger mode arrange module, AUTO pulse generation module, EXT/AUTO modular converter, pulsewidth range control module, pulse-width adjustment output module, driving circuit, DC/DC conversion module, HV pulse output module and storage battery power supply module;
Described external pulse detection module for detection of and the pulse signal of the outside input of conditioning, and the amplitude that conditioning the is obtained pulse signal that is 5V is input to trigger mode module is set;
Described trigger mode arranges module and for required high-voltage pulse is set, is synchronized with upper edge or the lower edge of external pulse, and the pulse after output is synchronously to EXT/AUTO modular converter;
Described AUTO pulse generation module is for generation of internal pulse signal, and outputs to EXT/AUTO modular converter; Described internal pulse signal is that amplitude is the square-wave pulse signal of 5V;
Described EXT/AUTO modular converter is for selecting and export external pulse or internal pulses to pulsewidth range control module;
Described pulsewidth range control module is for carrying out width modulation to the pulse signal receiving, and selects and output pulse width is that the pulse signal of 0.1～1.1 μ s or 1.1～11 μ s is to pulse-width adjustment output module;
Described pulse-width adjustment output module is for carrying out pulse-width regulated to the pulse signal receiving, and in output pulse width value range, a certain definite pulse width signal is to driving circuit;
Described driving circuit for outputing to HV pulse output module by the pulse signal amplitude transformation of reception after 15V;
Described DC/DC conversion module is for after boosting the low-voltage DC of storage battery power supply module output, and output voltage is to HV pulse output module;
Under the driving of described HV pulse output module for the pulse signal in described driving circuit output, according to the voltage of described DC/DC conversion module output, output high-voltage pulse.
2. shelf depreciation high voltage pulse generation device according to claim 1, is characterized in that: described external pulse detection module comprises that model is IC3 transceiver, resistance R 1, resistance R 2, resistance R 3, diode D3, diode D4 and the triode Q1 of ST485; Wherein, described diode D1, diode D2 forward oppositely access after connecting between described powered battery module+5V output terminal and ground again, described external pulse signal is by resistance R 1, resistance R 2 dividing potential drops, the base stage of resistance R 1 and 2 points of common connection while of resistance R connecting triode Q1 and the points of common connection of diode D1 and diode D2, the emitter of described triode Q1 connects 6 pins of IC3 transceiver, the full sized pules signal that 2 pin output amplitudes of IC3 transceiver are 5V.
3. shelf depreciation high voltage pulse generation device according to claim 1, is characterized in that: described trigger mode arranges module and comprises XOR gate, resistance, electric capacity and switch; After described resistance, capacitances in series, by switch, access an input end of XOR gate, another input end of the external pulse signal access XOR gate after shaping, the pulse signal after described XOR gate output terminal output is synchronous.
4. shelf depreciation high voltage pulse generation device according to claim 1, it is characterized in that: described pulsewidth range control module comprises relay, electric capacity, by described relay, change the electric capacity of place in circuit different capabilities, thereby the value that changes the time constant RC of circuit, realizes the control of pulsewidth range.
5. shelf depreciation high voltage pulse generation device according to claim 1, it is characterized in that: described pulse-width adjustment output module comprises comparer, Resistor-Capacitor Unit, pulse signal after shaping conversion charges by Resistor-Capacitor Unit, at capacitance cathode, form a time dependent voltage signal increasing progressively, the end of oppisite phase of this voltage signal access comparer, the in-phase end of comparer is connected the adjustable voltage signal that overpotential device is controlled, two signal comparisons, export the pulse signal of certain pulsewidth at output terminal.
6. shelf depreciation high voltage pulse generation device according to claim 1, it is characterized in that: described HV pulse output comprises speed-sensitive switch triode, high-frequency transformer, the output of pulse signal of described driving circuit output is to the grid of speed-sensitive switch triode, the former limit of high-frequency transformer connects the drain electrode of described DC/DC conversion module output terminal and speed-sensitive switch triode, high-frequency transformer secondary output high-voltage pulse.
7. shelf depreciation high voltage pulse generation device according to claim 1, is characterized in that: also comprise battery voltage detection module, for the voltage of accumulator is carried out to sample detecting.
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| CN201420324322.7U CN203965489U (en) | 2014-06-17 | 2014-06-17 | A kind of shelf depreciation high voltage pulse generation device |
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| CN201420324322.7U CN203965489U (en) | 2014-06-17 | 2014-06-17 | A kind of shelf depreciation high voltage pulse generation device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093734A (en) * | 2016-08-02 | 2016-11-09 | 上海三基电子工业有限公司 | Partial discharge pulse based on GIS signal detection generator and method thereof |
| CN108344933A (en) * | 2018-04-13 | 2018-07-31 | 李桂平 | Electric Power Equipment Insulation detects and circuit " soft touchdown " failure searches instrument |
| CN108614222A (en) * | 2018-07-06 | 2018-10-02 | 深圳众鑫凯科技有限公司 | A kind of battery voltage acquisition detecting system |
| CN109596953A (en) * | 2018-12-20 | 2019-04-09 | 国网北京市电力公司 | Electromagnetic wave launcher and instrument for measuring partial discharge's device |
| CN109669107A (en) * | 2018-11-23 | 2019-04-23 | 内蒙古电力（集团）有限责任公司内蒙古超高压供电局 | Simulate the device and its analogy method of shelf depreciation |
| CN112034309A (en) * | 2020-07-28 | 2020-12-04 | 北京交通大学 | Partial discharge identification method for high-voltage switch cabinet |
-
2014
- 2014-06-17 CN CN201420324322.7U patent/CN203965489U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093734A (en) * | 2016-08-02 | 2016-11-09 | 上海三基电子工业有限公司 | Partial discharge pulse based on GIS signal detection generator and method thereof |
| CN108344933A (en) * | 2018-04-13 | 2018-07-31 | 李桂平 | Electric Power Equipment Insulation detects and circuit " soft touchdown " failure searches instrument |
| CN108614222A (en) * | 2018-07-06 | 2018-10-02 | 深圳众鑫凯科技有限公司 | A kind of battery voltage acquisition detecting system |
| CN109669107A (en) * | 2018-11-23 | 2019-04-23 | 内蒙古电力（集团）有限责任公司内蒙古超高压供电局 | Simulate the device and its analogy method of shelf depreciation |
| CN109596953A (en) * | 2018-12-20 | 2019-04-09 | 国网北京市电力公司 | Electromagnetic wave launcher and instrument for measuring partial discharge's device |
| CN112034309A (en) * | 2020-07-28 | 2020-12-04 | 北京交通大学 | Partial discharge identification method for high-voltage switch cabinet |
| CN112034309B (en) * | 2020-07-28 | 2021-11-23 | 北京交通大学 | Partial discharge identification method for high-voltage switch cabinet |
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Address after: Corning road in Jiangning District of Nanjing City, Jiangsu province 211100 Dongshan Street Industrial Zone No. 789 Patentee after: Suntech Power Technology (Nanjing) Co. Ltd. Address before: Corning road in Jiangning District of Nanjing City, Jiangsu province 211100 Dongshan Street Industrial Zone No. 789 Patentee before: Suntech Power Technology (Nanjing) Limited by Share Ltd |
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