CN204167914U - A kind of energy back feed device and marine generator stress test system - Google Patents
A kind of energy back feed device and marine generator stress test system Download PDFInfo
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- CN204167914U CN204167914U CN201420690045.1U CN201420690045U CN204167914U CN 204167914 U CN204167914 U CN 204167914U CN 201420690045 U CN201420690045 U CN 201420690045U CN 204167914 U CN204167914 U CN 204167914U
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Abstract
The utility model discloses a kind of energy back feed device and marine generator stress test system, wherein energy back feed device comprises the input switch, rectifier, inverter, the first transformer, phase-relate feedback circuit and the output switch that connect successively; The input of input switch connects the input of energy back feed device, and the output of output switch connects the output of energy back feed device; Rectifier and inverter export the frequency of electricity for changing marine generator; First transformer exports the voltage of electricity for changing marine generator, phase-relate feedback circuit is used for phase place and the phase sequence that marine generator exports electricity.Marine generator stress test system comprises marine generator, load test test module and energy back feed device.A kind of energy back feed device that the utility model proposes, is connected in marine generator stress test system, the electricity that marine generator load test sends is fed back to utility network to replace resistance consumption energy, thus reaches the effect of energy-conserving and environment-protective.
Description
Technical field
The utility model relates to a kind of energy conserving system, particularly relates to a kind of energy back feed device and marine generator stress test system.
Background technology
In shipping industry, after new ship completes, marine generator all will do load test, deliver for a check to shipowner, ship inspection, all with in resistance consumed energy process during existing generator load test, test out the various performances and parameters of generator, waste a large amount of electric energy, do not meet energy-conserving and environment-protective policy.
Utility model content
For solving the problems of the technologies described above, the utility model proposes a kind of energy back feed device, be connected in marine generator stress test system, the electricity that marine generator load test sends be fed back to utility network to replace resistance consumption energy, thus reach the effect of energy-conserving and environment-protective.
For achieving the above object, the utility model by the following technical solutions:
The utility model discloses a kind of energy back feed device, for by the electric energy feedback of marine generator load test to utility network, comprise the input switch, rectifier, inverter, the first transformer, phase-relate feedback circuit and the output switch that connect successively; The input of described input switch connects the input of described energy back feed device, and the output of described output switch connects the output of described energy back feed device; Described rectifier and described inverter export the frequency of electricity for changing marine generator; Described first transformer exports the voltage of electricity for changing marine generator, described phase-relate feedback circuit exports phase place and the phase sequence of electricity for changing marine generator.
Preferably, described energy back feed device also comprises input reactance device and out put reactor, and described input reactance device is connected between described input switch and described rectifier, and described out put reactor is connected between described inverter and described first transformer; Described input reactance device and described out put reactor are all the waveform continuity for the harmonic current in holding circuit.
Preferably, described energy back feed device also comprises filter circuit, and described filter circuit is connected between described first transformer and described phase-relate feedback circuit, for the waveform of the sine voltage in correcting circuit.
Preferably, described energy back feed device also comprises input meter, the input of described input meter connects the output of described input switch, for recording the input voltage of described energy back feed device, input current, input power, input power factor and input electric energy.
Preferably, described energy back feed device also comprises output meter, the output of described output meter connects the input of described phase-relate feedback circuit, for recording the output voltage of described energy back feed device, output current, power output, output power factor and output electric energy.
Preferably, described energy back feed device also comprises the second transformer, described second transformer is connected between the output of described output switch and the output of described energy back feed device, for needing according to described utility network the output voltage changing described energy back feed device.
The utility model also discloses a kind of marine generator stress test system in addition, comprise marine generator, load test test module and above-described energy back feed device, the output of described marine generator connects the input of described load test test module, the output of described load test test module connects the input of described energy back feed device, and the output of described energy back feed device connects described utility network.
The utility model compared with prior art beneficial effect is: energy back feed device of the present utility model is connected in marine generator stress test system, and the electricity sent by marine generator feeds back to utility network, thus avoids the waste of a large amount of electric energy.
In preferred scheme, energy back feed device also comprises input reactance device and out put reactor, the waveform of the harmonic current in the circuit of energy back feed device can be made to keep continuity, prevent harmonic current to be interfered; In addition, energy back feed device also by arranging the second transformer before output, thus can need to carry out transformation according to the difference of utility network, energy back feed device is applied more extensive.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the marine generator stress test system of the utility model preferred embodiment;
Fig. 2 is the schematic diagram of the energy back feed device of the utility model preferred embodiment.
Embodiment
Below contrast accompanying drawing and combine preferred embodiment the utility model is described in further detail.
As shown in Figure 1, the marine generator stress test system of preferred embodiment of the present utility model, comprise marine generator 1, load test test module 2 and energy back feed device 3, wherein load test test module 2 can comprise generator speed change rate test module, generator characteristic test module, reverse-power in the generator test module etc. simultaneously.The input of the output connected load tentative module 2 of marine generator 1, the output of load test test module 2 connects the input of energy back feed device 3, and the output of energy back feed device 3 connects utility network 4.
As shown in Figure 2, be the inside connection diagram of energy back feed device 3.From input, what connect successively is input switch 301, input meter 302, input reactance device 303, rectifier 304, inverter 305, out put reactor 306, first transformer 307, filter circuit 308, output meter 309, phase-relate feedback circuit 310, output switch 311 and the second transformer 312 respectively, is connected to output.The operation principle of energy back feed device 3 is: the electricity that marine generator is sent, by the first rectification of rectifier 304, and then be reverse into interchange by inverter 305 and realize frequency conversion, transformation is realized again by the first transformer 307, realize changing phase place and phase sequence by phase-relate feedback circuit 310, the electricity that marine generator is sent is identical with the electricity (voltage, phase place, phase sequence, frequency etc.) on utility network, realize the electricity that marine generator sends when carrying out load test and be applied to utility network, and avoid the waste of a large amount of electric power.The effect of each assembly in energy back feed device 3 is respectively:
Input switch 301: protect energy back feed device 3, prevents the heavy current impact just starting to produce when charging to filter capacitor, alleviates the impact on electrical network;
Input meter 302: the display system being provided with input voltage, input current, input power, input power factor, input electric energy frequency at the input of power supply, can real time record and monitoring input power consumption;
Input reactance device 303: arrange AC reactor at the input of power supply, prevents the interference of harmonic current, keeps the waveform continuity of harmonic current;
Rectifier 304: preferably adopt three-phase (IGBT) rectification circuit, after AC rectification, the direct current that output ripple is very low;
Inverter 305: preferably adopt three-phase bridge type converter, becomes alternating current by DC power conversion.Whole conversion process can by Microprocessor S3C44B0X, and when electrical network input voltage reduces or load current increases, PWM ripple (sinusoidal pulse width modulation) will be adjusted wide automatically, otherwise narrows, and makes output voltage keep stable;
Out put reactor 306: the continuity keeping current waveform, reduces current pulsation value;
First transformer 307: the alternating current after inverter inversion is carried out transformation to required voltage;
Filter circuit 308: voltage waveform is corrected further, sine wave output voltage;
Export meter 309: the display system being provided with output voltage, output current, power output, output power factor, output electric energy frequency at the output of power supply, can real time record and the monitoring power consumption of output and the running status of power supply;
Phase-relate feedback circuit 310: the phase place exported, phase sequence are detected, feeds back to the control section of input, revise accordingly according to output situation;
Output switch 311: preferably adopt intelligent breaker, can carry out intelligent selection according to the demand of load measure to load energy, judge whether open circuit;
Second transformer 312: the different demands for utility network carry out transformation.
By the energy back feed device that the utility model proposes is connected to marine generator stress test system, the electricity sent by marine generator can be used in the load of utility network after overload trial, save a large amount of outer net electric power on the one hand, also solve the problem of underload during marine generator load test on the other hand, energy-conserving and environment-protective.Utility network mentioned in the utility model can be power plant, also can be other electrical networks such as domestic power grid.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of ordinary skill in the field; without departing from the concept of the premise utility; some equivalent to substitute or obvious modification can also be made, and performance or purposes identical, all should be considered as belonging to protection range of the present utility model.
Claims (7)
1. an energy back feed device, for by the electric energy feedback of marine generator load test to utility network, it is characterized in that, comprise the input switch, rectifier, inverter, the first transformer, phase-relate feedback circuit and the output switch that connect successively; The input of described input switch connects the input of described energy back feed device, and the output of described output switch connects the output of described energy back feed device; Described rectifier and described inverter export the frequency of electricity for changing marine generator; Described first transformer exports the voltage of electricity for changing marine generator, described phase-relate feedback circuit exports phase place and the phase sequence of electricity for changing marine generator.
2. energy back feed device according to claim 1, it is characterized in that, also comprise input reactance device and out put reactor, described input reactance device is connected between described input switch and described rectifier, and described out put reactor is connected between described inverter and described first transformer; Described input reactance device and described out put reactor are all the waveform continuity for the harmonic current in holding circuit.
3. energy back feed device according to claim 1, is characterized in that, also comprises filter circuit, and described filter circuit is connected between described first transformer and described phase-relate feedback circuit, for the waveform of the sine voltage in correcting circuit.
4. energy back feed device according to claim 1, it is characterized in that, also comprise input meter, the input of described input meter connects the output of described input switch, for recording the input voltage of described energy back feed device, input current, input power, input power factor and input electric energy.
5. energy back feed device according to claim 1, it is characterized in that, also comprise output meter, the output of described output meter connects the input of described phase-relate feedback circuit, for recording the output voltage of described energy back feed device, output current, power output, output power factor and output electric energy.
6. energy back feed device according to claim 1, it is characterized in that, also comprise the second transformer, described second transformer is connected between the output of described output switch and the output of described energy back feed device, for needing according to described utility network the output voltage changing described energy back feed device.
7. a marine generator stress test system, comprise marine generator and load test test module, the output of described marine generator connects the input of described load test test module, it is characterized in that, also comprise the energy back feed device described in any one of claim 1 to 6, the output of wherein said load test test module connects the input of described energy back feed device, and the output of described energy back feed device connects utility network.
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| CN201420690045.1U CN204167914U (en) | 2014-11-17 | 2014-11-17 | A kind of energy back feed device and marine generator stress test system |
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| CN201420690045.1U CN204167914U (en) | 2014-11-17 | 2014-11-17 | A kind of energy back feed device and marine generator stress test system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020784A (en) * | 2017-12-13 | 2018-05-11 | 广新海事重工股份有限公司 | A kind of marine generator group load test teledata acquisition device |
| CN109412198A (en) * | 2018-09-29 | 2019-03-01 | 厦门华睿晟智能科技有限责任公司 | A kind of energy feedback system and electricity generation system applied to generator |
| CN109412199A (en) * | 2018-09-29 | 2019-03-01 | 厦门华睿晟智能科技有限责任公司 | A kind of energy feedback system and electricity generation system applied to generator |
| CN111025145A (en) * | 2019-11-16 | 2020-04-17 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Test topology and method for comprehensive power system of multifunctional ship alternating-current power station |
| CN112255566A (en) * | 2020-12-22 | 2021-01-22 | 澄瑞电力科技（上海）有限公司 | High-voltage shore power simulation ship receiving test system, device and method |
-
2014
- 2014-11-17 CN CN201420690045.1U patent/CN204167914U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020784A (en) * | 2017-12-13 | 2018-05-11 | 广新海事重工股份有限公司 | A kind of marine generator group load test teledata acquisition device |
| CN109412198A (en) * | 2018-09-29 | 2019-03-01 | 厦门华睿晟智能科技有限责任公司 | A kind of energy feedback system and electricity generation system applied to generator |
| CN109412199A (en) * | 2018-09-29 | 2019-03-01 | 厦门华睿晟智能科技有限责任公司 | A kind of energy feedback system and electricity generation system applied to generator |
| CN111025145A (en) * | 2019-11-16 | 2020-04-17 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Test topology and method for comprehensive power system of multifunctional ship alternating-current power station |
| CN111025145B (en) * | 2019-11-16 | 2021-11-26 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Test topology and method for comprehensive power system of multifunctional ship alternating-current power station |
| CN112255566A (en) * | 2020-12-22 | 2021-01-22 | 澄瑞电力科技（上海）有限公司 | High-voltage shore power simulation ship receiving test system, device and method |
| CN112255566B (en) * | 2020-12-22 | 2021-03-26 | 澄瑞电力科技（上海）有限公司 | High-voltage shore power simulation ship receiving test system, device and method |
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