CN104375043A - Portable resident photovoltaic grid-connection acceptance tester - Google Patents
Portable resident photovoltaic grid-connection acceptance tester Download PDFInfo
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- CN104375043A CN104375043A CN201410690169.4A CN201410690169A CN104375043A CN 104375043 A CN104375043 A CN 104375043A CN 201410690169 A CN201410690169 A CN 201410690169A CN 104375043 A CN104375043 A CN 104375043A
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Abstract
The invention discloses a portable resident photovoltaic grid-connection acceptance tester. The portable resident photovoltaic grid-connection acceptance tester comprises a 12V direct current power source, an inverter, a stepless voltage regulating unit and a two-phase plug; the 12V direct current power source is connected with the input end of the inverter; the output end of the inverter is connected with the input end of the stepless voltage regulating unit; the two-phase plug is connected with the output end of the stepless voltage regulating unit through a wire; the voltage at the input end of the stepless voltage regulating unit is 220 V, and the voltage at the output end of the stepless voltage regulating unit ranges from 0 V to 250 V; a voltage reading unit and a time displaying unit are arranged on the stepless voltage regulating unit. The portable resident photovoltaic grid-connection acceptance tester is ingenious in design, convenient to carry and easy to operate, and plays a great role in the resident photovoltaic project grid-connection acceptance work.
Description
Technical field:
The present invention relates to the grid-connected Acceptance Test instrument of a kind of portable resident.
Background technology:
According to country about the requirement promoting and support distributed power source sustainable and healthy development, since 2013, photovoltaic power generation grid-connecting project is grown out of nothing, and photovoltaic power generation grid-connecting application continues to increase, this wherein, family's grid-connected project construction quantity is particularly remarkable.Ordinarily resident builds photovoltaic generation project by utilizing building roof and attached place, and realize photovoltaic power generation quantity and generate power for their own use, dump energy is surfed the Net.
But in grid-connected examination link, owing to there is no specialized equipment at present, therefore in grid-connected project access system plan about " through inverter style power grid point; install low-pressure grid-connection special switch; special switch should possess decompression tripping operation and inspection has pressure closing function; decompression trip rating should adjust into 20%UN, 10 seconds, inspection has compression set value should adjust as being greater than 85%UN." etc. parameter and device to adjust index, decompression trip avoidance function can only be tested by the mode disconnecting civil power.And then the onsite acceptance quality making power supply enterprise grid-connected to resident's photovoltaic generation project is had a greatly reduced quality, simultaneously also leave potential safety hazard to low-voltage distribution network environment of powering.
Along with large-scale developing and utilizing of green energy resource regenerative resource, solar photovoltaic grid-connection generating obtains common concern.Under the support energetically of government and State Grid Corporation of China's preferential policy, resident is grid-connected also to get more and more, and is to ensure the safe and reliable electricity consumption of resident, and power supply enterprise is particularly important in grid-connected examination link.
In the type selecting of photovoltaic apparatus, for ensureing safety.The mode determination grid-connection device that State Grid Corporation of China establishes with allusion quotation must possess anti-islet operation function.
But before tester development uses, onsite acceptance work mainly adopts the mode of excision civil power, to detect the decompression trip avoidance function of grid-connecting apparatus.But cannot by effective means in grid-connected project access scheme about " through inverter style power grid point; install low-pressure grid-connection special switch; special switch should possess decompression tripping operation and inspection has pressure closing function; decompression trip rating should adjust into 20%UN, 10 seconds, inspection has compression set value should adjust as being greater than 85%UN." device adjust index carry out quantification detect.
Summary of the invention:
For overcoming the defect of prior art, the object of the present invention is to provide the grid-connected Acceptance Test instrument of a kind of portable resident, designing ingenious, easy to carry, simple to operate, the grid-connected checking and accepting of resident's photovoltaic project is played a significant role.
Technical solution problem of the present invention adopts following technical scheme:
The grid-connected Acceptance Test instrument of portable resident, comprising:
12V direct supply, inverter, stepless voltage regulation unit and two-pin plug;
Described 12 direct supplys are connected with the input end of described inverter, and the output terminal of described inverter is connected with the input end of described stepless voltage regulation unit, and described two-pin plug is connected by the output terminal of wire with described stepless voltage regulation unit;
The input terminal voltage of described stepless voltage regulation unit is 220V, and output end voltage is 0-250V;
Described stepless voltage regulation unit is provided with voltage readings unit and time display unit.
1, tester under civil power stops using situation, to Li Island shape grid-connecting apparatus, should be able to simulate civil power running environment in lonely net environment, with detect the anti-islet operation ability of resident's inverter and low-pressure grid-connection switch decompression tripping operation and low-voltage dead lock closing function.
2, tester is on-the-spot in grid-connected examination, and should not destroy residential households finishing state, the user side electrical network that can expose without metallic conduction position at light, realizes plug and play by the form of plug-socket, and safe and reliable.
3, tester can be easy to use and carry, by physics arrange realize assembled.Power supply unit can be dismantled flexibly, is convenient to discharge and recharge; Inversion and pressure regulation unit should by good security protections, and output voltage should meet alternating voltage, frequency requirement; Test and reading cell should realize accurate counting; Physical operations link is simple, convenient.
Compared with the prior art, beneficial effect of the present invention is embodied in:
Device provides test reference power supply by direct supply, by single-phase inverter and pressure regulator, realizes detecting the output of analog voltage and adjustable.Because its volume is little, easy to operate, convenient, flexible, directly can introduce the grid-connected loop of resident without exposed metal, detection be carried out to grid-connecting apparatus parameter and checks and accepts.Ensure on-the-spot photovoltaic grid-connected device satisfied " distributed power source access Distribution system design specification " and distribution management and running requirement.
The grid-connected Acceptance Test instrument of portable resident, its physical features is convenient for carrying, structure simply, practical flexibly, meet and check and accept on-the-spot needs; Its technical characteristic is device element stable performance, and technology maturation is safe and reliable.The user side electrical network that this instrument can expose without metallic conduction position at light, plug and play is realized by the form of plug-socket, thering is provided test environment by simulation power-frequency voltage for checking and accepting scene, being exported the alternating voltage of different numerical value by regulator to user side, simple to operate, flexible.
1, current, photovoltaic project grid-connected examination link detection means is single, and does not have ripe finished product to check and accept device.
2, portable resident's photovoltaic Acceptance Test instrument volume is little, lightweight, flexible operation.
3, the technological gap of current resident's photovoltaic project acceptance inspection link has been filled up.
4, after Integrated design, production, be convenient to resident and carry out equipment energy characteristic inspection voluntarily.
Accompanying drawing illustrates:
Fig. 1 is the electrical schematic diagram of this tester; Fig. 2 is the voltage-regulation principle figure of stepless voltage regulation unit; Fig. 3 is the inverter figure of inverter.
Below by way of embodiment, and the invention will be further described by reference to the accompanying drawings.
Embodiment:
Embodiment: see Fig. 1-3, the grid-connected Acceptance Test instrument of portable resident of the present embodiment, it comprises:
12V direct supply, inverter, stepless voltage regulation unit and two-pin plug;
Described 12 direct supplys are connected with the input end of described inverter, and are provided with inverter switching device between 12V direct supply and the input end of inverter; The output terminal of described inverter is connected with the input end of described stepless voltage regulation unit, and described two-pin plug is connected by the output terminal of wire with described stepless voltage regulation unit;
The input terminal voltage of described stepless voltage regulation unit is 220V, and output end voltage is 0-250V;
Described stepless voltage regulation unit is provided with voltage readings unit and time display unit.
Workflow:
1, check inverter switching device, the adjusting pressuring knob of stepless voltage regulation unit is at initial position;
2, electric battery is equipped as requested, connecting line is connected on request.
3, by user city electroblation, check that user side equipment is in examination position.
4, inverter working power is opened, turn adjusting pressuring knob to 220 × 85% volt.Start photovoltaic grid-connected device.After normal.
5, turn adjusting pressuring knob to 220 × 20% volt, by voltage readings unit reading, when time display unit is read, slowly reduces output voltage.
6, repeatedly after three times, normal electricity consumption pattern is recovered.Fill in acceptance report.
Portable resident's photovoltaic Acceptance Test instrument effectively combines inverter technology and the electrodeless adjustment technology of alternating voltage, has filled up the blank that photovoltaic power generation grid-connecting checks and accepts link device to test.The device of current use, general assembly (TW) controls within 3 kilograms.Form special Integrated design and after manufacturing, will volume be realized less, with better function.The use of tester, significantly improves the work efficiency of grid-connected project acceptance inspection link, easy to operate, and data quantize.
Under the situation of checking and accepting on-the-spot city electroblation, provide working power by dc-battery, transfer alternating current 220V operating voltage to through inverter and export.The alternating voltage exported realizes exchanging in 0V to 220V × (1+10%) scope adjustable through stepless pressure regulation device, simultaneously by output circuit and the voltage table connect and time module realize the readable of simulated data.Simple to operate, rapidly and efficiently.
Claims (1)
1. the grid-connected Acceptance Test instrument of portable resident, is characterized in that comprising:
12V direct supply, inverter, stepless voltage regulation unit and two-pin plug;
Described 12 direct supplys are connected with the input end of described inverter, and the output terminal of described inverter is connected with the input end of described stepless voltage regulation unit, and described two-pin plug is connected by the output terminal of wire with described stepless voltage regulation unit;
The input terminal voltage of described stepless voltage regulation unit is 220V, and output end voltage is 0-250V;
Described stepless voltage regulation unit is provided with voltage readings unit and time display unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410690169.4A CN104375043A (en) | 2014-11-25 | 2014-11-25 | Portable resident photovoltaic grid-connection acceptance tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410690169.4A CN104375043A (en) | 2014-11-25 | 2014-11-25 | Portable resident photovoltaic grid-connection acceptance tester |
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| CN104375043A true CN104375043A (en) | 2015-02-25 |
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| CN201410690169.4A Pending CN104375043A (en) | 2014-11-25 | 2014-11-25 | Portable resident photovoltaic grid-connection acceptance tester |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102023273A (en) * | 2010-12-31 | 2011-04-20 | 常州天合光能有限公司 | Portable domestic photo voltaic power station performance tester |
| CN102338851A (en) * | 2011-09-28 | 2012-02-01 | 东北大学 | Plug and play detecting device for photovoltaic power generation grid-connected system |
| CN102680816A (en) * | 2012-04-19 | 2012-09-19 | 常州天华新能源科技有限公司 | Portable comprehensive tester for photovoltaic power station |
| CN103176142A (en) * | 2013-02-26 | 2013-06-26 | 中国电力科学研究院 | Grid-connection adaptability testing system and method for photovoltaic power stations |
| KR101290656B1 (en) * | 2013-01-24 | 2013-07-29 | 주식회사 동이에코스 | Active multi-channel connector band for solar energy |
| CN204188732U (en) * | 2014-11-25 | 2015-03-04 | 国家电网公司 | The grid-connected Acceptance Test instrument of portable resident |
-
2014
- 2014-11-25 CN CN201410690169.4A patent/CN104375043A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023273A (en) * | 2010-12-31 | 2011-04-20 | 常州天合光能有限公司 | Portable domestic photo voltaic power station performance tester |
| CN102338851A (en) * | 2011-09-28 | 2012-02-01 | 东北大学 | Plug and play detecting device for photovoltaic power generation grid-connected system |
| CN102680816A (en) * | 2012-04-19 | 2012-09-19 | 常州天华新能源科技有限公司 | Portable comprehensive tester for photovoltaic power station |
| KR101290656B1 (en) * | 2013-01-24 | 2013-07-29 | 주식회사 동이에코스 | Active multi-channel connector band for solar energy |
| CN103176142A (en) * | 2013-02-26 | 2013-06-26 | 中国电力科学研究院 | Grid-connection adaptability testing system and method for photovoltaic power stations |
| CN204188732U (en) * | 2014-11-25 | 2015-03-04 | 国家电网公司 | The grid-connected Acceptance Test instrument of portable resident |
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Application publication date: 20150225 |