CN103490646A - Ultrahigh-voltage alternating-current/direct-current pollution test power supply device - Google Patents
Ultrahigh-voltage alternating-current/direct-current pollution test power supply device Download PDFInfo
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Abstract
本发明介绍了一种特高压交直流污秽试验电源装置，包括依次串联的交流10kV电源（1）、前级10kV开关柜（2）、10kV调压器（3）、晶闸管控制装置（4）、后级10kV开关柜（5）、交流污秽试验变压器（6）、交流保护电阻（7）、交流分压器（8）、直流单级倍压整流装置（9）、直流保护电阻（10）、直流分压器（11）和依次串联的泄漏电流测量装置（13）、直流测量显示装置（16）、计算机控制装置（14）。本装置：1）成套化，提高了利用率，减少了投资；2）被试品端泄漏电流时电压波动小；3）电源部分容量大，阻抗小；4）能防止人身伤害，安全性好。
The present invention introduces a power supply device for UHV AC/DC pollution test, which includes AC 10kV power supply (1), pre-stage 10kV switchgear (2), 10kV voltage regulator (3), thyristor control device (4), Subsequent 10kV switchgear (5), AC pollution test transformer (6), AC protection resistor (7), AC voltage divider (8), DC single-stage voltage doubler rectifier (9), DC protection resistor (10), A DC voltage divider (11), a leakage current measurement device (13), a DC measurement display device (16), and a computer control device (14) are sequentially connected in series. This device: 1) complete set, which improves the utilization rate and reduces investment; 2) the voltage fluctuation is small when the leakage current of the tested product is small; 3) the power part has large capacity and small impedance; 4) it can prevent personal injury and has good safety .
Description
Technical field
The invention belongs to the electrical engineering technical field, relate to a kind of extra-high voltage alternating current-direct current pollution test supply unit.
Background technology
Because extra-high voltage alternating current-direct current power transmission engineering transmission distance is remote, pass through the area of Different climate, often be subject to the infringement of filth, icing, have a strong impact on the safe and stable operation of power transmission and transforming equipment.And extra-high voltage alternating current-direct current pollution test power supply is the capital equipment of the filthy pollution of research extra-high voltage alternating current-direct current and the freezing problem of icing, its electric pressure is high, and capacity is large, controls complicated.Therefore still there is following defect in the alternating current-direct current testing equipment used at present:
1), most of ac test place capacity is little, can't meet the requirement of extra-high voltage experiment electric pressure, therefore also just can not carry out the extra-high voltage alternating current-direct current pollution test;
2) though the constant current output requirement while having the Partial DC testing equipment can meet the direct current pollution test, because its electric pressure is inadequate, therefore can not be carried out the extra-high voltage alternating current-direct current pollution test equally;
3), current ac test equipment and DC experiment equipment all can not completely use, and monomer extra-high-voltage alternating current equipment and monomer extra-high voltage direct-current equipment manufacturing cost are high, less economical.
Summary of the invention
The technical problem to be solved in the present invention is, disappearance for the high-grade large capacity voltage unit power plant that can meet at present extra-high-voltage alternating current pollution test and direct current pollution test simultaneously, design high, the capacious extra-high voltage alternating current-direct current pollution test of a kind of electric pressure supply unit, use this device can meet the various needs of extra-high voltage alternating current-direct current pollution test research, reduce equipment investment simultaneously, improve utilization rate of equipment and installations, significantly reduce costs.
Technical scheme of the present invention is; referring to accompanying drawing 1; described extra-high voltage alternating current-direct current pollution test supply unit; as shown in Figure 1, it comprises leakage current measurement device 13, DC measurement display unit 16, the Computer Control Unit 14 of interchange 10kV power supply 1, prime 10kV switch cubicle 2,10kV voltage regulator 3, thyristor control device 4, rear class 10kV switch cubicle 5, interchange pollution test transformer 6, harmonics resistance 7, AC potentiometer 8, direct current single-stage voltage multiplying rectifier device 9, direct current protecting resistance 10, divider 11 and the series connection successively of series connection successively.
Wherein, described thyristor control device 4 suits isolating switch 17 by thyristor and thyristor groups 18 composes in parallel.Described thyristor suits isolating switch 17 and is connected the secondary of described 10kV voltage regulator 3 with an end of described thyristor groups 18 parallel connections, and the other end connects the input of described rear class 10kV switch cubicle 5;
Referring to accompanying drawing 2, described direct current single-stage voltage multiplying rectifier device 9 as shown in Figure 2, is connected to form by multiplication of voltage electric capacity 19, #2 silicon stack 20, filter capacitor 21 and #1 silicon stack 22.Wherein said multiplication of voltage electric capacity 19 1 ends are connected in series the high-pressure side of described AC potentiometer 8, the positive pole of the other end described #2 silicon stack 20 in parallel and the negative pole of #1 silicon stack 22; The high-voltage output end of described filter capacitor 21 connects respectively the negative pole of described #2 silicon stack 20 and the input of described direct current protecting resistance 10; The low-pressure end of described series filtering electric capacity 21 is connected with the positive pole of described #1 silicon stack 22.
The input of the described prime 10kV switch cubicle 2 of output termination of above-mentioned interchange 10kV power supply 1; The former limit of the described 10kV voltage regulator 3 of output termination of described prime 10kV switch cubicle 2; The low-pressure side of the described interchange pollution test of the output termination transformer 6 of described rear class 10kV switch cubicle 5; The input of the described harmonics resistance 7 of high pressure side joint of described interchange pollution test transformer 6; The high-voltage terminal of the described AC potentiometer 8 of output termination of described harmonics resistance 7; The high-voltage terminal of the described divider 11 of output termination of described direct current protecting resistance 10; Another high-voltage terminal of described divider 11 connects the input of test specimen 12 while using; The input of described leakage current measurement device 13 connects the output of test specimen 12 while using; The signal output part of described leakage current measurement device 13 the be connected in parallel signal input part of described DC measurement display unit 16 and the signal input part of described Computer Control Unit 14; The output of this Computer Control Unit 14 later is connected with the control signal end of above-mentioned prime 10kV switch cubicle 2.
In addition, the signal output part of above-mentioned AC potentiometer 8 also is connected to an AC measurment display unit 15.This AC measurment display unit 15 is connected with the signal output part of AC potentiometer 8 by its signal input part; The signal input part of described DC measurement display unit 16 and the signal input part of described the Computer Control Unit 14 and signal output part of above-mentioned divider 11 is connected in parallel; Wherein, also the be connected in parallel signal output part of thyristor groups 18 of above-mentioned thyristor control device 4 and the control signal end of above-mentioned rear class 10kV switch cubicle 5 of the signal input part of described Computer Control Unit 14.
Operation principle of the present invention is: while carrying out the extra-high-voltage alternating current pollution test, only adopt AC potentiometer 8 and forward part circuit thereof, be AC potentiometer 8 with direct current single-stage voltage multiplying rectifier device 9 between be connected disconnection, AC potentiometer 8 connects test specimen 12, and direct current single-stage voltage multiplying rectifier device 9 and follow-up equipment do not participate in test.
Now, prime 10kV switch cubicle 2 and rear class 10kV switch cubicle 5 close a floodgate, and 10kV power supply 1 provides the 10kV AC power to package unit; The thyristor of thyristor control device 4 suits isolating switch 17 closures, makes thyristor control device 4 short circuits, and thyristor control device 4 is not worked when exchanging pollution test; 10kV voltage regulator 3 zero raising voltages, test voltage boosts to the setting test value through exchanging pollution test transformer 6, and, by AC measurment display unit 15 viewing test magnitudes of voltage, executes the information such as alive time.When the test specimen flashover, carry out limiting short-circuit current by harmonics resistance 7, Computer Control Unit 14 makes rapidly rear class 10kV switch cubicle 5 and prime 10kV switch cubicle 2 separating brakes; cut off the electricity supply; weaken the impact of test specimen short circuit current to electrical network, simultaneously, 10kV voltage regulator 3 self-zeroings.
During the extra-high voltage direct-current pollution test, the package unit all devices all participates in work.The thyristor of thyristor control device 4 suits isolating switch 17 and disconnects, 4 work of thyristor control device.Prime 10kV switch cubicle 2 and rear class 10kV switch cubicle 5 close a floodgate, and 10kV power supply 1 provides the 10kV AC power to package unit; 10kV voltage regulator 3 zero raising voltages, test voltage boosts through exchanging pollution test transformer 6, and by ac voltage rectifier, be direct voltage through direct current single-stage voltage multiplying rectifier device 9, simultaneously by the voltage multiplication of voltage, observe AC test voltage value by AC measurment display unit 15, execute the information such as alive time, by DC measurement display unit 16, observe DC side test voltage values, leakage current values and execute alive temporal information.When the leakage current of test specimen 12 increases suddenly, the test specimen side magnitude of voltage that the leakage current values that Computer Control Unit 14 provides according to leakage current measurement device 13 and divider 11 provide, adjust rapidly the thyristor angle of flow of thyristor control device 4, make package unit provide leakage current to test specimen rapidly, reduce the voltage fluctuation of test specimen.When flashover occurs in test specimen 12; by direct current protecting resistance 10 limiting short-circuit currents; Computer Control Unit 14 makes rapidly rear class 10kV switch cubicle 5 and prime 10kV switch cubicle 2 separating brakes; cut off the electricity supply; weaken the impact of test specimen short circuit current to electrical network; simultaneously, 10kV voltage regulator 3 self-zeroings, multiplication of voltage electric capacity 19 and filter capacitor 21 automatic dischargings.
The invention has the beneficial effects as follows:
1), by extra-high voltage alternating current-direct current pollution test supply unit complete set, improved the utilance of equipment, reduced equipment investment, good economy performance;
2), extra-high voltage direct-current pollution test power acquisition thyristor control, the corresponding speed of package unit is fast, when test specimen brings out existing larger leakage current, the voltage fluctuation of test specimen end is little, can meet the requirement of GB/T22707-2008 promulgated by the ministries or commissions of the Central Government " direct current system is used the artificial pollution test of high-tension insulator " to the pollution test of extra-high voltage equipment direct current;
3), extra-high-voltage alternating current pollution test power unit capacity is large, impedance is little, can meet the requirement that in GB/T4585-2004 promulgated by the ministries or commissions of the Central Government " high-tension insulator artificial pollution test method for AC system ", extra-high voltage equipment is exchanged pollution test;
4), in the filthy experimentation of direct current, when flashover appears in test specimen, multiplication of voltage electric capacity and filter capacitor energy automatic discharging, prevent from the person is damaged, therefore fail safe is good.
The accompanying drawing explanation
The structured flowchart that Fig. 1 is a specific embodiment of extra-high voltage alternating current-direct current pollution test supply unit of the present invention;
The structured flowchart that Fig. 2 is the voltage multiplying rectifier of direct current single-stage shown in Fig. 1 device.
Being denoted as in above Fig. 1～2:
1-interchange 10kV power supply,
2-prime 10kV switch cubicle,
3-10kV voltage regulator,
4-thyristor control device,
5-rear class 10kV switch cubicle,
6-interchange pollution test transformer,
7-harmonics resistance,
8-AC potentiometer,
9-direct current single-stage voltage multiplying rectifier device,
10-direct current protecting resistance,
11-divider,
12-test specimen,
13-testing device for current leakage,
14-Computer Control Unit,
15-AC measurment display unit,
16-DC measurement display unit,
17-thyristor suits isolating switch,
18-thyristor groups.
19-multiplication of voltage electric capacity,
20-#2 silicon stack,
21-filter capacitor,
22-#1 silicon stack.
Embodiment
Referring to accompanying drawing 1～2, wherein Figure 1 shows that a specific embodiment of extra-high voltage alternating current-direct current pollution test supply unit of the present invention; The structured flowchart of the direct current single-stage voltage multiplying rectifier device that Fig. 2 is this embodiment.
Interchange 10kV power supply 1 in this embodiment is electric network source, and the short-circuit impedance value of its 10kV side is less than 1 ohm; The 10kV switch cubicle that the model that the prime 10kV switch cubicle 2 of this embodiment and rear class 10kV switch cubicle 5 all adopt the gloomy source of Hunan China wild goose energy Co., Ltd to produce is XGN2-12, rated voltage 12kV, rated current 630A, rated short circuit drop-out current is 16kA; The 10kV voltage regulator that the model that 10kV voltage regulator 3 adopts Shanghai Sang Pu Co., Ltd to produce is TYDZ-3200/10.5/0～10.5, rated capacity 3200kVA, former limit rated voltage 10.5kV, secondary output voltage 0～10.5kV;
The two-stage Cascade transformer that the model that interchange pollution test transformer 6 is produced for Jiangsu Province, China thunder space high voltage installation Co., Ltd is YDTW-3200/800, its low-pressure side rated voltage is 10kV, the high-pressure side rated voltage is 500kV(subordinate)/the 800kV(two-stage series connection), rated capacity is 3200kVA; Harmonics resistance 7 is the BR-12 type 12k Ω resistance that Jiangsu Province, China thunder space high voltage installation Co., Ltd produces; AC potentiometer 8 is also the YTC-800 type voltage divider that Jiangsu Province, China thunder space high voltage installation Co., Ltd produces, rated voltage 800kV, 1 grade of certainty of measurement;
The direct current single-stage voltage multiplying rectifier complete sets of products that direct current single-stage voltage multiplying rectifier device 9 provides for Jiangsu Province, China thunder space high voltage installation Co., Ltd, the rated voltage of one of this product component multiplication of voltage electric capacity 19 is 600kV, capacitance is 2 μ F; The rated voltage of filter capacitor 21 is 1200kV, and capacitance is 1 μ F; #1 silicon stack 22 is consistent with #2 silicon stack 20 parameters, rated current 6A(mean value), specified peak-inverse voltage is not less than 2500kV;
Direct current protecting resistance 10 is the BZR-10 type 10k Ω resistance that Jiangsu Province, China thunder space high voltage installation Co., Ltd produces; Divider 11 is the YTCZ-1200 type voltage divider that Jiangsu Province, China thunder space high voltage installation Co., Ltd produces, rated voltage ± 1200kV, 3 grades of certainties of measurement; Leakage current measurement device 13 is the XCZ-1200 type bleeder current measurer that Jiangsu Province, China thunder space high voltage installation Co., Ltd produces, and its measuring resistance resistance is 1 Ω; Computer Control Unit 14 is also the YD type computer control system that China produces for Leiyu High Voltage Equipment Co., Ltd., Jiangsu, use this system can realize that the Zi Dong ∕ of thyristor control device 4 manually controls, realize that Zi Dong ∕ manual voltage boosting is controlled and the manual step-down of Zi Dong ∕ is controlled; AC measurment display unit 15 and DC measurement display unit 16, all adopt the CX-1000 type that Jiangsu Province, China thunder space high voltage installation Co., Ltd produces to measure display instrument, its sampling rate 10k/s, can continuous two hour record test voltage current waveforms, measure current precision and reach 1mA.
Described interchange 10kV power supply 1, prime 10kV switch cubicle 2, 10kV voltage regulator 3, thyristor control device 4, rear class 10kV switch cubicle 5, exchange pollution test transformer 6, harmonics resistance 7, AC potentiometer 8, direct current single-stage voltage multiplying rectifier device 9, direct current protecting resistance 10, divider 11, leakage current measurement device 13, Computer Control Unit 14, AC measurment display unit 15, DC measurement display unit 16, thyristor suits isolating switch 17, thyristor groups 18, multiplication of voltage electric capacity 19, #2 silicon stack 20, filter capacitor 21 and #1 silicon stack 22 are by technique scheme, with reference to connected mode shown in accompanying drawing 1～2, connect.Wherein, it is in parallel with thyristor groups 18 that thyristor suits isolating switch 17, and an end connects the secondary of 10kV voltage regulator 3, and the other end connects the input of rear class 10kV switch cubicle 5; The high-pressure side of multiplication of voltage electric capacity 19 1 end serial connection AC potentiometers 8, the positive pole of other end # 2 silicon stack 20 in parallel and the negative pole of #1 silicon stack 22; The high-voltage output end of filter capacitor 21 connects respectively the negative pole of described #2 silicon stack 20 and the input of direct current protecting resistance 10; The positive pole of the low pressure termination # 1 silicon stack 22 of series filtering electric capacity 21.Exchange the input of the output termination prime 10kV switch cubicle 2 of 10kV power supply 1; The former limit of the output termination 10kV voltage regulator 3 of prime 10kV switch cubicle 2; The output termination of rear class 10kV switch cubicle 5 exchanges the low-pressure side of pollution test transformer 6; Exchange the input of the high pressure side joint harmonics resistance 7 of pollution test transformer 6; The high-voltage terminal of the output termination AC potentiometer 8 of harmonics resistance 7; The high-voltage terminal of the output termination divider 11 of direct current protecting resistance 10; The signal output part parallel connection direct of leakage current measurement device 13 is measured the signal input part of display unit 16 and the signal input part of Computer Control Unit 14; The control signal end of the output termination prime 10kV switch cubicle 2 of Computer Control Unit 14.The signal output part of AC potentiometer 8 connects the signal input part of AC measurment display unit 15; The signal output part parallel connection direct of divider 11 is measured the signal input part of display unit 16 and the signal input part of Computer Control Unit 14; The signal input part of Computer Control Unit 14 is the signal output part of parallel thyristors group 18 and the control signal end of rear class 10kV switch cubicle 5 also.
Be proved to be respond well by the above extra-high voltage alternating current-direct current pollution test supply unit of the present invention formed through manufacturing experimently to try out, reach designing requirement fully.In the present embodiment, drop into the test specimen 12 of experiment and selected the XWP-420 type glass insulator of DaLian, China electroceramics factory production, the parameter that experimental result shows is all approved by manufacturer.
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| CN103954867A (en) * | 2014-05-09 | 2014-07-30 | 国家电网公司 | Forest fire discharging simulation testing device of direct current transmission line |
| CN104330597A (en) * | 2014-10-15 | 2015-02-04 | 国网青海省电力公司电力科学研究院 | Mobile power-frequency contamination test power supply system |
| CN104330596A (en) * | 2014-10-15 | 2015-02-04 | 国网青海省电力公司电力科学研究院 | Mobile direct-current contamination test power supply system |
| CN104502644A (en) * | 2014-12-12 | 2015-04-08 | 国家电网公司 | A UHV DC voltage generator for pollution test |
| CN105203809A (en) * | 2014-08-30 | 2015-12-30 | 扬州市鑫源电气有限公司 | Test power supply apparatus of alternating current and direct current pollution test |
| CN105278440A (en) * | 2014-08-29 | 2016-01-27 | 扬州市鑫源电气有限公司 | Touch screen automatic control device for screening silicon particles in high voltage silicon stack |
| CN106405409A (en) * | 2016-11-23 | 2017-02-15 | 国家电网公司 | High-voltage circuit breaker insulation resistance and leakage current intelligent test system and method |
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| CN103954867A (en) * | 2014-05-09 | 2014-07-30 | 国家电网公司 | Forest fire discharging simulation testing device of direct current transmission line |
| CN103954867B (en) * | 2014-05-09 | 2015-03-18 | 国家电网公司 | Forest fire discharging simulation testing device of direct current transmission line |
| CN105278440A (en) * | 2014-08-29 | 2016-01-27 | 扬州市鑫源电气有限公司 | Touch screen automatic control device for screening silicon particles in high voltage silicon stack |
| CN105203809A (en) * | 2014-08-30 | 2015-12-30 | 扬州市鑫源电气有限公司 | Test power supply apparatus of alternating current and direct current pollution test |
| CN104330597A (en) * | 2014-10-15 | 2015-02-04 | 国网青海省电力公司电力科学研究院 | Mobile power-frequency contamination test power supply system |
| CN104330596A (en) * | 2014-10-15 | 2015-02-04 | 国网青海省电力公司电力科学研究院 | Mobile direct-current contamination test power supply system |
| CN104502644A (en) * | 2014-12-12 | 2015-04-08 | 国家电网公司 | A UHV DC voltage generator for pollution test |
| CN104502644B (en) * | 2014-12-12 | 2018-08-14 | 中国电力科学研究院 | Extra-high voltage direct current voltage generator for pollution test |
| CN106405409A (en) * | 2016-11-23 | 2017-02-15 | 国家电网公司 | High-voltage circuit breaker insulation resistance and leakage current intelligent test system and method |
| CN106405409B (en) * | 2016-11-23 | 2023-11-24 | 国家电网公司 | Intelligent test system and test method for insulation resistance and leakage current of high-voltage circuit breaker |
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Application publication date: 20140101 |