CN103472329A - Voltage exceptional response testing system of photovoltaic grid-connected inverter - Google Patents
Voltage exceptional response testing system of photovoltaic grid-connected inverter Download PDFInfo
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- CN103472329A CN103472329A CN2013104106602A CN201310410660A CN103472329A CN 103472329 A CN103472329 A CN 103472329A CN 2013104106602 A CN2013104106602 A CN 2013104106602A CN 201310410660 A CN201310410660 A CN 201310410660A CN 103472329 A CN103472329 A CN 103472329A
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Abstract
The invention relates to a voltage exceptional response testing system of a photovoltaic grid-connected inverter. The system comprises a simulation direct-current power source connected with an industrial personal computer, a simulation alternating-current power source connected with the industrial personal computer, a simulation load connected with the industrial personal computer, a simulation impedance A connected with the industrial personal computer, and a simulation impedance B connected with industrial personal computer. The middle joint of the simulation impedance A and the simulation impedance B which are connected in series is connected with the simulation load. An inverter to be tested is connected between the simulation alternating-current power source and the simulation impedance A. The simulation direct-current power source is connected with the simulation impedance B. the output side of the inverter to be tested, the output side of the simulation alternating-current power source, and the input side of the simulation load are all connected with a data recorder. The system can be used for testing inverters similar in capacity, difficulty for testing the voltage exceptional response of the photovoltaic grid-connected inverter is lowered, unnecessary electric energy consumption is reduced, and testing safety of the system and reliability of the testing result are improved.
Description
Technical field
The invention belongs to the grid-connected safety testing technical field of photovoltaic combining inverter, especially a kind of photovoltaic combining inverter electric voltage exception response test system.
Background technology
Photovoltaic combining inverter is the core component in photovoltaic generating system, and its performance directly affects the performance of whole system, and will produce material impact to public electric wire net.For guaranteeing utility network and user's safety, photovoltaic parallel in system should possess perfect safeguard measure, for the various faults that may occur, require photovoltaic parallel in system should in official hour, break away from electrical network, so the test of defencive function is extremely important.
The test of electric voltage exception response characteristic is a basic test item of photovoltaic combining inverter defencive function, has only provided the limit value of defencive function actuation time in existing testing standard, does not provide concrete method of testing and requirement.In addition, traditional photovoltaic combining inverter test need to manually be carried out the setting of each equipment in system, complicated operation, and have the test error caused by maloperation, test result poor reliability.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of photovoltaic combining inverter electric voltage exception response test system is provided.
The present invention solves its technical matters and takes following technical scheme to realize:
A kind of photovoltaic combining inverter electric voltage exception response test system, this system includes the emulation direct supply be connected with industrial computer for the simulated light photovoltaic array, the analog AC power supply be connected with industrial computer for the simulating grid state, the fictitious load be connected with industrial computer, the simulation A impedance be connected with industrial computer, the simulation B impedance be connected with industrial computer, described simulation A impedance and simulation B impedance are used for respectively analog DC mains side and the alternating current source line impedance to fictitious load, simulation A impedance is connected with fictitious load with the intermediate contact of simulation B impedance serial connection, be connected with tested inverter between emulation AC power and simulation A impedance, the analog DC power supply is connected with simulation B impedance, tested inverter outgoing side, analog AC power supply outgoing side, the input side of fictitious load all is connected with datalogger, record the voltage current waveform of electrical network mutation process and combining inverter course of action.
And, described emulation direct supply is connected with industrial computer by the RS232 interface, described analog AC power supply is connected with industrial computer by GPIB, and described fictitious load is connected with industrial computer by the RS232 interface, and described simulation A impedance all is connected with industrial computer by the I/O board with simulation B impedance.
And described emulation direct supply outgoing side all is connected by cable line with simulation B impedance intermediate contact with simulation A impedance with analog AC power supply outgoing side, fictitious load with simulation B impedance, simulation B impedance with simulation A impedance, simulation A impedance with tested inverter input side, tested inverter outgoing side.
And described datalogger is connected to respectively tested inverter outgoing side, fictitious load input side and analog AC power supply output side switch place by voltage clamp, current clamp.
And it is regatronTC.P.32 that described emulation direct supply is specifically selected model, by KingView software 6.55 coding codes, at the industrial computer operation interface, pass through RS232 interface operated from a distance emulation direct supply.
And described analog AC power supply is specifically selected Pacific Ocean AMX-360, by KingView software 6.55 coding codes, at the industrial computer operation interface, pass through gpib interface operated from a distance analog AC power supply.
And it is crowd water chestnut ACLT-3820H that described fictitious load is specifically selected model, by KingView software 6.55 coding codes, at the industrial computer operation interface, pass through RS232 interface operated from a distance fictitious load.
And described simulation A impedance adopts triumphant Xiang microgrid impedance integral type load cabinet with simulation B impedance.
And, under industrial computer operating system, by at KingView software 6.55 coding codes, set trial value and the opening sequence of operational order step and emulation direct supply, emulation AC power, fictitious load, datalogger, picture cycle function by KingView, industrial computer to treating that operating equipment sends an instruction, by the operated from a distance function, is realized test automatically every 0.5s.Advantage of the present invention and good effect are:
1, the present invention provides reliable support for the enforcement of photovoltaic combining inverter electric voltage exception response test;
2, the present invention has reduced difficulty of test, has improved the security of system testing and the reliability of test result;
The test of the different inverters that 3, the present invention can be close for capacitance grade, improved the extensibility of test macro;
4, test process of the present invention step is in accordance with regulations carried out, and has reduced unnecessary power consumption, has reduced testing cost.
The accompanying drawing explanation
Fig. 1 is the structural drawing of system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is further described, it is emphasized that following embodiment is illustrative, rather than determinate, can not using this embodiment as limitation of the invention.
A kind of photovoltaic combining inverter electric voltage exception response test system, as shown in Figure 1, this simulation system includes the emulation direct supply be connected with industrial computer for the simulated light photovoltaic array, the analog AC power supply be connected with industrial computer for the simulating grid state, the fictitious load be connected with industrial computer, the simulation A impedance be connected with industrial computer, the simulation B impedance be connected with industrial computer, described simulation A impedance and simulation B impedance are used for respectively analog DC mains side and the alternating current source line impedance to fictitious load, simulation A impedance is connected with fictitious load with the intermediate contact of simulation B impedance serial connection, tested inverter outgoing side, analog AC power supply outgoing side, the input side of fictitious load all is connected with datalogger, record the voltage current waveform of electrical network mutation process and combining inverter course of action, be connected with tested inverter between emulation AC power and simulation A impedance, the analog DC power supply is connected with simulation B impedance.
In specific embodiment of the invention, described emulation direct supply is connected with industrial computer by the RS232 interface, described analog AC power supply is connected with industrial computer by GPIB, described fictitious load is connected with industrial computer by the RS232 interface, and described simulation A impedance all is connected with industrial computer by the I/O board with simulation B impedance.
In specific embodiment of the invention, described emulation direct supply outgoing side all is connected by cable line with simulation B impedance intermediate contact with simulation A impedance with analog AC power supply outgoing side, fictitious load with simulation B impedance, simulation B impedance with simulation A impedance, simulation A impedance with tested inverter input side, tested inverter outgoing side.
In specific embodiment of the invention, described datalogger is connected to respectively tested inverter outgoing side, fictitious load input side and analog AC power supply output side switch place by voltage clamp, current clamp, during register system side electric voltage exception, locates voltage, current-responsive at every.
In specific embodiment of the invention, described simulation system is by KingView software 6.55 coding codes, the communication protocol of bonding apparatus realizes the communication connection between each equipment in system, completes the exchanges data between industrial computer and each connection device, thereby realizes the Long-distance Control of equipment.
In specific embodiment of the invention, it is regatronTC.P.32 that described emulation direct supply is specifically selected model, by KingView software 6.55 coding codes, pass through RS232 interface operated from a distance emulation direct supply at the industrial computer operation interface, can long-rangely be achieved as follows the operation of function: set the emulation electric power output voltage, current value, adjusting and readout power and resistance preset value, set output voltage limit, set the output current upper limit, call curve of output, the beginning of Long-distance Control output and stopping, read failure and warning message, remove fault and warning message, read the output state of emulation power supply, read actual output voltage, electric current, power and resistance value and read curve and call result.
In specific embodiment of the invention, described analog AC power supply specifically selects Pacific Ocean AMX-360 by KingView software 6.55 coding codes, pass through gpib interface operated from a distance analog AC power supply at the industrial computer operation interface, can long-rangely be achieved as follows the operation of function: set and read the emulation power supply output number of phases, the regulation output magnitude of voltage, read the output voltage effective value, the regulation output frequency, read output frequency, regulation output phase angle size, read active power, applied power and power factor, call the transient state program of having set, copy the transient state program, delete and output transient state program, read output line voltage.
In specific embodiment of the invention, it is crowd water chestnut ACLT-3820H that described fictitious load is specifically selected model, by KingView software 6.55 coding codes, by RS232 interface operated from a distance fictitious load, can long-rangely be achieved as follows the operation of function at the industrial computer operation interface: independent loads is with unloading resistance, inductance, three kinds of loads of electric capacity, Long-distance Control fan starting and stop, reading electric weight and warning message.
In specific embodiment of the invention, described simulation A impedance adopts triumphant Xiang microgrid impedance integral type load cabinet with simulation B impedance, is used for respectively analog DC mains side and the alternating current source line impedance size to fictitious load.In specific embodiment of the invention, under industrial computer operating system, by at KingView software 6.55 coding codes, set trial value and the opening sequence of operational order step and emulation direct supply, emulation AC power, fictitious load, datalogger, picture cycle function by KingView, industrial computer to treating that operating equipment sends an instruction, by the above operated from a distance function, is realized test automatically every 0.5s.
Claims (9)
1. a photovoltaic combining inverter electric voltage exception response test system, it is characterized in that: this system includes the emulation direct supply be connected with industrial computer for the simulated light photovoltaic array, the analog AC power supply be connected with industrial computer for the simulating grid state, the fictitious load be connected with industrial computer, the simulation A impedance be connected with industrial computer, the simulation B impedance be connected with industrial computer, described simulation A impedance and simulation B impedance are used for respectively analog DC mains side and the alternating current source line impedance to fictitious load, simulation A impedance is connected with fictitious load with the intermediate contact of simulation B impedance serial connection, be connected with tested inverter between emulation AC power and simulation A impedance, the analog DC power supply is connected with simulation B impedance, tested inverter outgoing side, analog AC power supply outgoing side, the input side of fictitious load all is connected with datalogger, record the voltage current waveform of electrical network mutation process and combining inverter course of action.
2. photovoltaic combining inverter electric voltage exception response test system according to claim 1, it is characterized in that: described emulation direct supply is connected with industrial computer by the RS232 interface, described analog AC power supply is connected with industrial computer by GPIB, described fictitious load is connected with industrial computer by the RS232 interface, and described simulation A impedance all is connected with industrial computer by the I/O board with simulation B impedance.
3. photovoltaic combining inverter electric voltage exception response test system according to claim 1 is characterized in that: described emulation direct supply outgoing side and tested inverter input side, tested inverter outgoing side and simulation A impedance, simulation A impedance and simulation B impedance, simulation B impedance and analog AC power supply outgoing side, fictitious load and simulation A impedance with simulate B impedance intermediate contact and all be connected by cable line.
4. photovoltaic combining inverter electric voltage exception response test system according to claim 1, it is characterized in that: described datalogger is connected to respectively tested inverter outgoing side, fictitious load input side and analog AC power supply output side switch place by voltage clamp, current clamp.
5. photovoltaic combining inverter electric voltage exception response test system according to claim 1, it is characterized in that: it is regatronTC.P.32 that described emulation direct supply is specifically selected model, by KingView software 6.55 coding codes, at the industrial computer operation interface, pass through RS232 interface operated from a distance emulation direct supply.
6. photovoltaic combining inverter electric voltage exception response test system according to claim 1, it is characterized in that: described analog AC power supply is specifically selected Pacific Ocean AMX-360, by KingView software 6.55 coding codes, at the industrial computer operation interface, pass through gpib interface operated from a distance analog AC power supply.
7. photovoltaic combining inverter electric voltage exception response test system according to claim 1, it is characterized in that: it is crowd water chestnut ACLT-3820H that described fictitious load is specifically selected model, by KingView software 6.55 coding codes, at the industrial computer operation interface, pass through RS232 interface operated from a distance fictitious load.
8. photovoltaic combining inverter electric voltage exception response test system according to claim 1 is characterized in that: described simulation A impedance adopts triumphant Xiang microgrid impedance integral type load cabinet with simulation B impedance.
9. photovoltaic combining inverter electric voltage exception response test system according to claim 1, it is characterized in that: under industrial computer operating system, by at KingView software 6.55 coding codes, set trial value and the opening sequence of operational order step and emulation direct supply, emulation AC power, fictitious load, datalogger, picture cycle function by KingView, industrial computer every 0.5s to treating that operating equipment sends an instruction, by the operated from a distance function, realize test automatically.
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Cited By (6)
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| CN105021916A (en) * | 2015-04-17 | 2015-11-04 | 国家电网公司 | Analysis and processing method for three-phase voltage abnormity of regional power grid 35 kV system |
| CN105652117A (en) * | 2015-12-29 | 2016-06-08 | 国网智能电网研究院 | DC power grid full-power circulating testing circuit based on DC/DC converter |
| CN114295914A (en) * | 2021-12-30 | 2022-04-08 | 深圳市首航新能源股份有限公司 | Test verification method and test verification platform for grid-connected electronic equipment |
| CN114705935A (en) * | 2022-03-29 | 2022-07-05 | 深圳市首航新能源股份有限公司 | Testing method and testing platform for grid-connected electronic equipment |
| CN115453253A (en) * | 2022-11-09 | 2022-12-09 | 深圳市鼎泰佳创科技有限公司 | Light stores up dc-to-ac converter aging testing system |
| CN115808582A (en) * | 2022-11-21 | 2023-03-17 | 深圳市索源科技有限公司 | Inverter load detection circuit |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021916A (en) * | 2015-04-17 | 2015-11-04 | 国家电网公司 | Analysis and processing method for three-phase voltage abnormity of regional power grid 35 kV system |
| CN105652117A (en) * | 2015-12-29 | 2016-06-08 | 国网智能电网研究院 | DC power grid full-power circulating testing circuit based on DC/DC converter |
| CN105652117B (en) * | 2015-12-29 | 2020-10-27 | 国网智能电网研究院 | DC/DC converter-based full-power-cycle test circuit for DC power grid |
| CN114295914A (en) * | 2021-12-30 | 2022-04-08 | 深圳市首航新能源股份有限公司 | Test verification method and test verification platform for grid-connected electronic equipment |
| CN114705935A (en) * | 2022-03-29 | 2022-07-05 | 深圳市首航新能源股份有限公司 | Testing method and testing platform for grid-connected electronic equipment |
| CN115453253A (en) * | 2022-11-09 | 2022-12-09 | 深圳市鼎泰佳创科技有限公司 | Light stores up dc-to-ac converter aging testing system |
| CN115453253B (en) * | 2022-11-09 | 2023-02-10 | 深圳市鼎泰佳创科技有限公司 | Light stores up dc-to-ac converter aging testing system |
| CN115808582A (en) * | 2022-11-21 | 2023-03-17 | 深圳市索源科技有限公司 | Inverter load detection circuit |
| CN115808582B (en) * | 2022-11-21 | 2023-12-26 | 深圳市索源科技有限公司 | Inverter load detection circuit |
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Application publication date: 20131225 |