CN204142867U - High-capacity intelligent expanded type electrical energy power quality disturbance generation systems - Google Patents
High-capacity intelligent expanded type electrical energy power quality disturbance generation systems Download PDFInfo
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- CN204142867U CN204142867U CN201420611416.2U CN201420611416U CN204142867U CN 204142867 U CN204142867 U CN 204142867U CN 201420611416 U CN201420611416 U CN 201420611416U CN 204142867 U CN204142867 U CN 204142867U
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Abstract
The utility model provides a kind of high-capacity intelligent expanded type electrical energy power quality disturbance generation systems, and this circuit can simulate the disturbance situation of load current characteristic, and device structure is simple, and reduces holistic cost.The utility model can realize the parallel operation of multiple stage module by only using a FPGA centralized control, there is the shortcoming postponing and may be interfered in the communication overcome between multiple controller, enhance the output capacity of electrical energy power quality disturbance generation systems, provide the reliability of system.High power density current disturbing generation module adopts sound plug-in unit to be connected with cabinet, during dilatation, multiple high power density current disturbing generation module is advanced in cabinet.
Description
Technical field
The utility model relates to a kind of electrical energy power quality disturbance generation systems, particularly a kind of high-capacity intelligent expanded type electrical energy power quality disturbance generation systems.
Background technology
In electric power practical work, for the raising of quality of power supply technical equipment and the variation of product, be necessary that development can produce all kinds of electrical energy power quality disturbance at the interior electrical energy power quality disturbance generating means with certain driving force, simulate various quality of power supply phenomenon in the lab, for basic platform is set up in the measurement of the electrical network quality of power supply, analysis, assessment and control.Thus the detection required by concerned countries standard or industry standard is carried out to electrical equipment and all kinds of electric instrument.
For analysis load is on the impact of modern power systems more comprehensively and effectively, we are necessary research intelligent power quality disturbance generation technique, particularly particularly important to the research of Large Copacity controllable AC electric power electronic load.But the domestic and international research not system for electrical energy power quality disturbance simulation at present, and there is no corresponding standards and norms.
Summary of the invention
The purpose of this utility model is to provide a kind of high-capacity intelligent expanded type electrical energy power quality disturbance generating means, and this circuit can simulate the disturbance situation of load current characteristic, and device structure is simple, and reduces holistic cost.
The utility model realizes by the following technical solutions: high-capacity intelligent expanded type electrical energy power quality disturbance generation systems, is characterized in that: comprise high power density current disturbing generation module, pre-charge resistance, contactor, isolating switch, power converting circuit, FPGA controller and display input block; Described contactor is in parallel with described pre-charge resistance; One end of described isolating switch is connected with electrical network, and the described isolating switch other end is connected with one end of described contactor; The other end of described contactor is connected with the first output terminal of high power density current disturbing generation module; Second output terminal of described high power density current disturbing generation module is connected with the input end of described power converting circuit; The output terminal of described power converting circuit is connected with the first input end of described FPGA controller; 3rd output terminal of described high power density current disturbing generation module is connected with the second input end of described FPGA controller; 3rd input end of described FPGA controller is connected with one end of described isolating switch; The four-input terminal of described FPGA controller is connected with the other end of described contactor; First output terminal of described FPGA controller is connected with the control input end of described high power density current disturbing generation module; Second output terminal of described FPGA controller is connected with described display input block.
In an embodiment of the present utility model, described high power density current disturbing generation module comprises IGBT inverter bridge, wave filter and dc-link capacitance; Described dc-link capacitance is in parallel with described IGBT inverter bridge brachium pontis; One of described IGBT inverter bridge exports and is connected with one end of described wave filter, and the other end of described wave filter is the first output terminal of described high power density current disturbing generation module; Another output of described IGBT inverter bridge is the second output terminal of described high power density current disturbing generation module; The output of described dc-link capacitance is the 3rd output terminal of described high power density current disturbing generation module; The raster data model end of the IGBT module of described IGBT inverter bridge is the control input end of described high power density current disturbing generation module.
In another embodiment of the utility model, described wave filter is LCL low-pass filter.
In the utility model again an embodiment, described FPGA controller and described high power density current disturbing generation intermodule adopt Fiber connection.
In the another embodiment of the utility model, described FPGA controller can the simultaneously multiple described high power density current disturbing generation module of Parallel Control.
Compared with prior art the utility model has the following advantages: drive inverter circuit to control the output of current disturbing analog quantity by PWM, realize the truth of power network current disturbance; Structure is simple, modularization, building blocks expanded type parallel-connection structure, facilitates dilatation, easy to maintenance; Advanced design, control flexible, powerful, adaptability is good, can flexible Application in the various grid type Test Application needing harmonic current source.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model parallel operation structural representation.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is specifically described.
The utility model is a kind of high-capacity intelligent expanded type electrical energy power quality disturbance generating means as shown in Figure 1-2, it is characterized in that: comprise high power density current disturbing generation module, pre-charge resistance, contactor, isolating switch, power converting circuit, FPGA controller and display input block; Described contactor is in parallel with described pre-charge resistance; One end of described isolating switch is connected with electrical network, and the described isolating switch other end is connected with one end of described contactor; The other end of described contactor is connected with the first output terminal of high power density current disturbing generation module; Second output terminal of described high power density current disturbing generation module is connected with the input end of described power converting circuit; The output terminal of described power converting circuit is connected with the first input end of described FPGA controller; 3rd output terminal of described high power density current disturbing generation module is connected with the second input end of described FPGA controller; 3rd input end of described FPGA controller is connected with one end of described isolating switch; The four-input terminal of described FPGA controller is connected with the other end of described contactor; First output terminal of described FPGA controller is connected with the control input end of described high power density current disturbing generation module; Second output terminal of described FPGA controller is connected with described display input block.
Described high power density current disturbing generation module comprises IGBT inverter bridge, wave filter and dc-link capacitance; Described dc-link capacitance is in parallel with described IGBT inverter bridge brachium pontis; One of described IGBT inverter bridge exports and is connected with one end of described wave filter, and the other end of described wave filter is the first output terminal of described high power density current disturbing generation module; Another output of described IGBT inverter bridge is the second output terminal of described high power density current disturbing generation module; The output of described dc-link capacitance is the 3rd output terminal of described high power density current disturbing generation module; The raster data model end of the IGBT module of described IGBT inverter bridge is the control input end of described high power density current disturbing generation module.
Described wave filter is LCL low-pass filter.
Described FPGA controller and described high power density current disturbing generation intermodule adopt Fiber connection.
Described FPGA controller can the simultaneously multiple described high power density current disturbing generation module of Parallel Control.
In the utility model specific embodiment, under original state, isolating switch and contactor are all in off-state.When current disturbing generation systems access electrical network, first close circuit breaker, contactor remains open state, and circuit now, through pre-charge resistance, is charged to DC bus capacitance by diode full-bridge uncontrollable rectifier circuit.After this charging process continues for some time, after charging voltage reaches setting value, controller FPGA sends signal and is closed by contactor, namely pre-charge resistance short circuit.Now, control system receives harmonic current, reactive power, the superposition situation reference value of the setting of display input block, closed-loop control is carried out with reference to value and the actual electric current exported of device, go through overdrive circuit the shutoff controlling converter circuit IGBT again after producing PWM modulation signal, ensure degree of stability and the precision of output harmonic wave electric current and reactive power.
The output current of IGBT inverter circuit is through the wave filter of LCL topological structure in addition, removes the higher hamonic wave that in output current, IGBT HF switch produces, avoids its Injection Testing.And be applicable to any on-the-spot network system impedance, resonance can not occur, ensure security of system.
The utility model intelligent building blocks expanded type electrical energy power quality disturbance generation systems adopts the parallel operation mode of high reliability: same controller centralized control, inside modules is without the change of current.Along with the high capacity of current transformer application, its capacity extension is imperative, and this just needs jumbo electrical energy power quality disturbance generation systems.The utility model can realize the parallel operation of multiple stage module by only using FPGA (field programmable gate array) centralized control, there is the shortcoming postponing and may be interfered in the communication overcome between multiple controller, enhance the output capacity of electrical energy power quality disturbance generation systems, provide the reliability of system.Each electrical equipment in high power density current disturbing generation module is as the filter inductance in IGBT, LCL filter and damping resistance is microminiaturized and standardization, and whole high power density current disturbing generation module topology is encapsulated in a module.High power density current disturbing generation module adopts sound plug-in unit to be connected with cabinet, during dilatation, current disturbing generation module is advanced in cabinet, plugs optical fiber.Adopt modular mode, the total solution of electrical energy power quality disturbance generation systems can be realized, significantly can reduce costs, reduce production procedure.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model instructions and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. high-capacity intelligent expanded type electrical energy power quality disturbance generation systems, is characterized in that: comprise high power density current disturbing generation module, pre-charge resistance, contactor, isolating switch, power converting circuit, FPGA controller and display input block; Described contactor is in parallel with described pre-charge resistance; One end of described isolating switch is connected with electrical network, and the described isolating switch other end is connected with one end of described contactor; The other end of described contactor is connected with the first output terminal of high power density current disturbing generation module; Second output terminal of described high power density current disturbing generation module is connected with the input end of described power converting circuit; The output terminal of described power converting circuit is connected with the first input end of described FPGA controller; 3rd output terminal of described high power density current disturbing generation module is connected with the second input end of described FPGA controller; 3rd input end of described FPGA controller is connected with one end of described isolating switch; The four-input terminal of described FPGA controller is connected with the other end of described contactor; First output terminal of described FPGA controller is connected with the control input end of described high power density current disturbing generation module; Second output terminal of described FPGA controller is connected with described display input block.
2. high-capacity intelligent expanded type electrical energy power quality disturbance generation systems according to claim 1, is characterized in that: described high power density current disturbing generation module comprises IGBT inverter bridge, wave filter and dc-link capacitance; Described dc-link capacitance is in parallel with described IGBT inverter bridge brachium pontis; One of described IGBT inverter bridge exports and is connected with one end of described wave filter, and the other end of described wave filter is the first output terminal of described high power density current disturbing generation module; Another output of described IGBT inverter bridge is the second output terminal of described high power density current disturbing generation module; The output of described dc-link capacitance is the 3rd output terminal of described high power density current disturbing generation module; The raster data model end of the IGBT module of described IGBT inverter bridge is the control input end of described high power density current disturbing generation module.
3. high-capacity intelligent expanded type electrical energy power quality disturbance generation systems according to claim 2, is characterized in that: described wave filter is LCL low-pass filter.
4. high-capacity intelligent expanded type electrical energy power quality disturbance generation systems according to claim 1, is characterized in that: described FPGA controller and described high power density current disturbing generation intermodule adopt Fiber connection.
5. high-capacity intelligent expanded type electrical energy power quality disturbance generation systems according to claim 1, is characterized in that: described FPGA controller can the multiple described high power density current disturbing generation module of Parallel Control simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420611416.2U CN204142867U (en) | 2014-10-22 | 2014-10-22 | High-capacity intelligent expanded type electrical energy power quality disturbance generation systems |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420611416.2U CN204142867U (en) | 2014-10-22 | 2014-10-22 | High-capacity intelligent expanded type electrical energy power quality disturbance generation systems |
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| CN204142867U true CN204142867U (en) | 2015-02-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764958A (en) * | 2015-04-14 | 2015-07-08 | 国家电网公司 | Testing system of power quality control equipment |
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2014
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764958A (en) * | 2015-04-14 | 2015-07-08 | 国家电网公司 | Testing system of power quality control equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20211022 |