CN101762724A - Test power supply - Google Patents
Test power supply Download PDFInfo
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- CN101762724A CN101762724A CN200810013537A CN200810013537A CN101762724A CN 101762724 A CN101762724 A CN 101762724A CN 200810013537 A CN200810013537 A CN 200810013537A CN 200810013537 A CN200810013537 A CN 200810013537A CN 101762724 A CN101762724 A CN 101762724A
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Abstract
The invention relates to a test power supply, which is mainly used for a power system and other devices requiring the DC 220V power supply for a test task. The power supply comprises a main body, an external output control circuit and an adjusting circuit, wherein the main body is formed by a solid-state rectifier module and a DC voltage negative feedback module; and the external output control circuit and the adjusting circuit are connected with the main body. The test power supply has the characteristics of wide adjustment range, high output power, light weight and convenient carrying, thereby meeting the requirements of relay protection, substation maintenance and other the professional on-site tests of a power system and having good promotion prospect.
Description
Technical field
The present invention relates to a kind of experiment power supply, relate in particular to a kind of experiment power supply that electric system etc. needs the experiment work of direct current 220V power supply device that is applied to.
Background technology
Traditional high power DC experiment power supply adopts the manufacturing mode of transformation, rectification, filtering; its output power and range of regulation in use are subjected to certain restriction; and volume is big, brings many troubles for the site test of specialties such as relay protection of power system, substation equipment maintenance and repair.
Summary of the invention
The present invention is directed to above-mentioned problems of the prior art, through a large amount of test and explorations, take the lead in using the modularization principle of compositionality, a kind of experiment power supply is provided, it is little to have solved in the prior art high power DC experiment power supply output power and range of regulation, bulky problem, and the present invention is in light weight is easy to carry.
Technical scheme of the present invention is as follows: solid-state rectification module and DC voltage negative feedback module constitute main body, and peripheral output control circuit and regulating circuit link to each other with main body.
Described solid-state rectification module carries out the alternating current of 1,2 terminals input to export the control that the amplitude size of the DC voltage after the rectification is simultaneously pressed by 8,9 end light current after the full-bridge rectification by 3,4 terminals;
Described DC voltage negative feedback module is gathered the DC voltage of solid-state rectification module output, simultaneously require to export 8,9 ends that light current is depressed into solid-state rectification module automatically DC voltage is automatically adjusted, to reach pressure stabilization function by CON and COM according to output voltage; The Ug end is regulated terminal for DC voltage output;
Described regulating circuit is divided into two kinds of electronic control and mechanical adjustment, and two kinds of regulative modes can switch mutually, under the malfunctioning situation of a cover, can select another kind of voltage regulating mode;
Described output control circuit is realized the output of forceful electric power direct current is controlled by the control to light current.
Described electronic control is the electronic pressure controller that is made of electronic circuit, by control panel ↑, ↓ two buttons carry out the adjustings that voltage rises and descends, mechanical adjustment is to be regulated by the potentiometer of device side.
Described output control circuit adopts the solid-state DC relay of DC220/20A.
It is 0.5 grade electron type voltage table and reometer that described output voltage and output current all adopt precision.
Advantageous effect of the present invention is as follows: because the present invention adopts is the power rectifier module, and therefore maximum exportable 20A electric current can export the power of 4.4kW, is 0～500V and the negative feedback module is used, and actual measurement can pressure regulation between 15～300V.The present invention adopts state-of-the-art technology, has that range of adjustment is big, output power is big, portable characteristics in light weight.Can satisfy the site test needs of specialties such as relay protection of power system, substation equipment maintenance and repair; Has good promotion prospect.
Description of drawings
Fig. 1 is a principle of work circuit diagram of the present invention.
Embodiment
Embodiment
Below be described in detail as follows by accompanying drawing to concrete structure of the present invention: constitute main body by solid-state rectification module and DC voltage negative feedback module, peripheral output control circuit and regulating circuit link to each other with main body.
Described solid-state rectification module is the DQZ-220 element that Hangzhou Xizi, a famous beauty in the late Spring and Autumn Period's solid-state relay company limited makes, its effect is that the alternating current that 1,2 terminals are imported is carried out exporting the control that the amplitude size of the DC voltage after the rectification is simultaneously pressed by 8,9 end light current after the full-bridge rectification by 3,4 terminals.
Described DC voltage negative feedback module is the MK-ZF that Hangzhou Xizi, a famous beauty in the late Spring and Autumn Period's solid-state relay company limited makes, its effect is gathered the DC voltage of solid-state rectifier module D QZ-220 output, simultaneously require to export 8,9 ends that light current is depressed into solid-state rectifier module D QZ-220 automatically DC voltage is automatically adjusted, to reach pressure stabilization function by CON and COM according to output voltage.The Ug end is regulated terminal for DC voltage output, presses the adjusting that can reach voltage by controlling its 0～5V light current.
Described regulating circuit is divided into two kinds of electronic control and mechanical adjustment, electronic control is the electronic pressure controller that is made of electronic circuit, by control panel ↑, ↓ two buttons carry out the adjustings that voltage rises and descends, mechanical adjustment is to be regulated by the potentiometer of device side, two kinds of regulative modes can switch mutually, under the malfunctioning situation of a cover, can select another kind of voltage regulating mode.
Described output control circuit adopts the solid-state DC relay of DC220/20A, realizes the output of forceful electric power direct current is controlled by the control to light current, has certain security.
It is 0.5 grade electron type voltage table and reometer that described output voltage and output current all adopt precision, has intuitive display, characteristics that precision is high.
Technical requirement of the present invention is as follows:
Requiring when relay protection specialty and the test of checking experiment specialty is as follows:
1, the maximum DC voltage output of direct supply should be able to reach Ue120%, can reach the operation voltage of the too high relay of electric substation's dc bus.220 * 1.2=264V just.
2, the direct supply output power should be able to satisfy the max cap. that the pass is run in protective device and jumping jointly.
According to reality, to press the 220kV route protection and calculate, the use power of two cover protections is about 200W, and when tripping during switch, the consumed power of double jump circle is about 3kW, adds up to 3.2kW.
3, the voltage of direct supply output should be able to scalable, and when certain regulation voltage, should not fluctuate with the variation of load.
Require general minimum voltage at Ue30% according to switch test; The protection aspect requires general minimum voltage at Ue20%, and therefore, the adjustable extent of comprehensive minimum output voltage and maximum output voltage should be at Ue20%～Ue120% (between the 44V～264V).
4, the ripple factor of direct supply output should be less than 3%.
5, direct supply should be light reliable, is easy to carry.
Technical parameter of the present invention is as follows:
Input voltage: DC220V; Output voltage: DC15～300V; Peak power output: 4.4kW; Ripple factor:＜3%; Device physical dimension 250*200*120mm; Installation weight: 4.8kG.
Claims (4)
1. an experiment power supply is characterized in that constituting main body by solid-state rectification module and DC voltage negative feedback module, and peripheral output control circuit and regulating circuit link to each other with main body;
Described solid-state rectification module carries out the alternating current of 1,2 terminals input to export the control that the amplitude size of the DC voltage after the rectification is simultaneously pressed by 8,9 end light current after the full-bridge rectification by 3,4 terminals;
Described DC voltage negative feedback module is gathered the DC voltage of solid-state rectification module output, simultaneously require to export 8,9 ends that light current is depressed into solid-state rectification module automatically DC voltage is automatically adjusted, to reach pressure stabilization function by CON and COM according to output voltage; The Ug end is regulated terminal for DC voltage output;
Described regulating circuit is divided into two kinds of electronic control and mechanical adjustment, and two kinds of regulative modes can switch mutually, under the malfunctioning situation of a cover, can select another kind of voltage regulating mode;
Described output control circuit is realized the output of forceful electric power direct current is controlled by the control to light current.
2. experiment power supply according to claim 1, it is characterized in that described electronic control is the electronic pressure controller that is made of electronic circuit, by control panel ↑, ↓ two buttons carry out the adjustings that voltage rises and descends, mechanical adjustment is to be regulated by the potentiometer of device side.
3. experiment power supply according to claim 1 is characterized in that described output control circuit adopts the solid-state DC relay of DC220/20A.
4. experiment power supply according to claim 1 is characterized in that it is 0.5 grade electron type voltage table and reometer that described output voltage and output current all adopt precision.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810013537A CN101762724A (en) | 2008-10-07 | 2008-10-07 | Test power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810013537A CN101762724A (en) | 2008-10-07 | 2008-10-07 | Test power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101762724A true CN101762724A (en) | 2010-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810013537A Pending CN101762724A (en) | 2008-10-07 | 2008-10-07 | Test power supply |
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| CN (1) | CN101762724A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412166A (en) * | 2013-08-16 | 2013-11-27 | 常熟市苏常工程质量检测有限公司 | High-current test equipment |
| CN103675371A (en) * | 2013-12-09 | 2014-03-26 | 苏州泰思特电子科技有限公司 | Voltage change generator |
| CN104198782A (en) * | 2014-09-13 | 2014-12-10 | 安徽鑫龙电器股份有限公司 | Power output test bed |
| CN110544944A (en) * | 2019-10-12 | 2019-12-06 | 国网安徽省电力有限公司亳州供电公司 | AC/DC composite overhaul power supply device |
| CN111308383A (en) * | 2019-11-19 | 2020-06-19 | 江西洪都航空工业集团有限责任公司 | Aircraft power supply adaptability test feedback control circuit |
-
2008
- 2008-10-07 CN CN200810013537A patent/CN101762724A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412166A (en) * | 2013-08-16 | 2013-11-27 | 常熟市苏常工程质量检测有限公司 | High-current test equipment |
| CN103675371A (en) * | 2013-12-09 | 2014-03-26 | 苏州泰思特电子科技有限公司 | Voltage change generator |
| CN104198782A (en) * | 2014-09-13 | 2014-12-10 | 安徽鑫龙电器股份有限公司 | Power output test bed |
| CN110544944A (en) * | 2019-10-12 | 2019-12-06 | 国网安徽省电力有限公司亳州供电公司 | AC/DC composite overhaul power supply device |
| CN111308383A (en) * | 2019-11-19 | 2020-06-19 | 江西洪都航空工业集团有限责任公司 | Aircraft power supply adaptability test feedback control circuit |
| CN111308383B (en) * | 2019-11-19 | 2022-02-15 | 江西洪都航空工业集团有限责任公司 | Aircraft power supply adaptability test feedback control circuit |
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Open date: 20100630 |