CN104682423A - Alternating current and direct current hybrid microgrid control system - Google Patents
Alternating current and direct current hybrid microgrid control system Download PDFInfo
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- CN104682423A CN104682423A CN201310639763.6A CN201310639763A CN104682423A CN 104682423 A CN104682423 A CN 104682423A CN 201310639763 A CN201310639763 A CN 201310639763A CN 104682423 A CN104682423 A CN 104682423A
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Abstract
The invention discloses an alternating current and direct current hybrid microgrid control system. The system comprises a main controller, a direct-current power generation module, an alternating-current power generation module and a distribution network, wherein the direct-current power generation module is connected with an inverter I and an alternating-current bus through an interface I; the alternating-current bus is connected with the distribution network; the direct-current power generation module is also connected with an energy-storing device; the energy-storing device is connected with an inverter II and the alternating-current bus through an interface II; the interface I and the interface II are also connected with a direct-current load and an alternating-current load through a direct-current bus; an inverter III is connected between the direct-current bus and the alternating-current load; a DC (direct current)/DC convertor is connected between the direct-current bus and the direct-current load; the alternating-current power generation module is connected with the alternating-current bus through an interface III. The output electric energy of the power generation module can power the alternating-current load and the direct-current load through the direct-current bus and the alternating-current bus, power supply is stable and reliable, and the alternating current and direct current hybrid microgrid control system is convenient to popularize and use.
Description
Technical field
The present invention relates to microgrid electric power supply control system technical field, especially relate to a kind of alternating current-direct current mixing microgrid control system.
Background technology
The appearance of distributed power generation solves non-renewable energy resources very well and day by day reduces the drawback with large-scale power grid centrally connected power supply, although distributed power source has many good qualities, but when fault, distributed power source must excise at once from network, and this usefulness that just greatly limit distributed power source plays, and the appearance of microgrid has then coordinated distributed power source composition well, can be incorporated into the power networks with bulk power grid, when bulk power grid breaks down, piconet island runs, independently for load is powered; When network configuration changes or breaks down in microgrid, how to coordinate relation between each micro battery, so that ensure under any circumstance can to load quality supply, this difficult point is exactly the control technology key technology place of microgrid; Being incorporated into the power networks of microgrid, have impact on major network quality to a certain extent, create such as voltage fluctuation, dodge limit etc., the requirement of this kind of sensitive equipment of computer, microprocessor to the quality of power supply is harsher, even the Voltage Drop in several cycle all will affect the normal work of this kind equipment, huge economic loss is caused, therefore, to the control of the quality of power supply with improve and just seem particularly important to society.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, there is provided a kind of alternating current-direct current mixing microgrid control system, its structure is simple, reasonable in design, it is convenient to realize, use simple operation, electricity generation module can be exported electric energy by DC bus and ac bus is that AC load and DC load are powered, and powers reliable and stable, long service life, practical, result of use is good, is convenient to promote the use of.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of alternating current-direct current mixing microgrid control system, it is characterized in that: comprise master controller, utilize the DC generation module of solar energy or fuel power generation function, the alternative electric generation module utilizing wind energy to carry out generating electricity and power distribution network, described DC generation module is connected with ac bus by interface one and the inverter one for direct current being converted to alternating current, described ac bus connects with power distribution network, described DC generation module also connects with energy storage device, described energy storage device is connected with ac bus by interface two and inverter two, described interface one and interface two are also connected with AC load and DC load by DC bus, described DC bus and be connected to inverter three and the DC/DC transducer for being carried out changing by direct voltage between AC load and DC load respectively, described alternative electric generation module is connected with ac bus by interface three, described master controller connects with the monitoring host computer be arranged at for tele-control system in Control Room, described master controller input is connected to the voltage detection module connected for detecting ac bus voltage with ac bus, described master controller output and interface one, interface two, interface three, the voltage dynamic adjustments module of dynamic conditioning ac bus voltage and the alarm module for not reporting to the police in normal range (NR) to voltage connect.
Above-mentioned a kind of alternating current-direct current mixing microgrid control system, is characterized in that: described master controller is PLC.
The present invention compared with prior art has the following advantages:
1, structure of the present invention is simple, reasonable in design, and it is convenient to realize.
2, electricity generation module can be exported electric energy by DC bus and ac bus by the present invention is that AC load and DC load are powered, and powers reliable and stable.
3, of the present invention practical, result of use is good, is convenient to promote the use of.
In sum, structure of the present invention is simple, reasonable in design, it is convenient to realize, and uses simple operation, electricity generation module can be exported electric energy by DC bus and ac bus is that AC load and DC load are powered, power reliable and stable, long service life, practical, result of use is good, is convenient to promote the use of.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present invention.
Description of reference numerals:
1-master controller; 2-DC generation module; 3-alternative electric generation module;
4-energy storage device; 5-voltage detection module; 6-voltage dynamic adjustments module;
7-power distribution network; 8-interface one; 9-interface two;
10-interface three; 11-inverter one; 12-inverter two;
13-inverter three; 14-DC/DC transducer; 15-AC load;
16-DC load; 17-monitoring host computer; 18-alarm module.
Embodiment
As shown in Figure 1, the present invention includes master controller 1, utilize the DC generation module 2 of solar energy or fuel power generation function, the alternative electric generation module 3 utilizing wind energy to carry out generating electricity and power distribution network 7, described DC generation module 2 is connected with ac bus by interface 1 and the inverter 1 for direct current being converted to alternating current, described ac bus connects with power distribution network 7, described DC generation module 2 also connects with energy storage device 4, described energy storage device 4 is connected with ac bus by interface 29 and inverter 2 12, described interface 1 and interface 29 are also connected with AC load 15 and DC load 16 by DC bus, described DC bus and be connected to inverter 3 13 and the DC/DC transducer 14 for being carried out changing by direct voltage between AC load 15 and DC load 16 respectively, described alternative electric generation module 3 is connected with ac bus by interface 3 10, described master controller 1 connects with the monitoring host computer 17 be arranged at for tele-control system in Control Room, described master controller 1 input is connected to the voltage detection module 5 connected for detecting ac bus voltage with ac bus, described master controller 1 output and interface 1, interface 29, interface 3 10, the voltage dynamic adjustments module 6 of dynamic conditioning ac bus voltage and the alarm module 18 for not reporting to the police in normal range (NR) to voltage connect.
As shown in Figure 1, in the present embodiment, described master controller 1 is PLC.
Operation principle of the present invention and the course of work are: the electric energy of a conversion part stores to energy storage device 4 by DC generation module 2, the electric energy that the electric energy of another part electric energy, energy storage device 4 and alternative electric generation module 3 are changed sends DC bus and ac bus to, sends electric energy to AC load 15 and DC load 16 by DC bus and ac bus; Whether master controller 1 controls each electricity generation module according to the information that voltage detection module 5 transmits is that DC bus and ac bus are powered.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection range of technical solution of the present invention.
Claims (2)
1. an alternating current-direct current mixing microgrid control system, it is characterized in that: comprise master controller (1), utilize the DC generation module (2) of solar energy or fuel power generation function, the alternative electric generation module (3) utilizing wind energy to carry out generating electricity and power distribution network (7), described DC generation module (2) is connected with ac bus by interface one (8) and the inverter one (11) for direct current being converted to alternating current, described ac bus connects with power distribution network (7), described DC generation module (2) also connects with energy storage device (4), described energy storage device (4) is connected with ac bus by interface two (9) and inverter two (12), described interface one (8) and interface two (9) are also connected with AC load (15) and DC load (16) by DC bus, described DC bus and be connected to inverter three (13) and the DC/DC transducer (14) for being carried out changing by direct voltage between AC load (15) and DC load (16) respectively, described alternative electric generation module (3) is connected with ac bus by interface three (10), described master controller (1) connects with the monitoring host computer (17) be arranged at for tele-control system in Control Room, described master controller (1) input is connected to and connects for the voltage detection module (5) detecting ac bus voltage with ac bus, described master controller (1) output and interface one (8), interface two (9), interface three (10), the voltage dynamic adjustments module (6) of dynamic conditioning ac bus voltage and the alarm module (18) for not reporting to the police in normal range (NR) to voltage connect.
2., according to a kind of alternating current-direct current mixing microgrid control system according to claim 1, it is characterized in that: described master controller (1) is PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310639763.6A CN104682423A (en) | 2013-11-30 | 2013-11-30 | Alternating current and direct current hybrid microgrid control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310639763.6A CN104682423A (en) | 2013-11-30 | 2013-11-30 | Alternating current and direct current hybrid microgrid control system |
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| Publication Number | Publication Date |
|---|---|
| CN104682423A true CN104682423A (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310639763.6A Pending CN104682423A (en) | 2013-11-30 | 2013-11-30 | Alternating current and direct current hybrid microgrid control system |
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| CN (1) | CN104682423A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602566A (en) * | 2017-03-07 | 2017-04-26 | 四川师范大学 | Superconductive AC-DC customized electric power system having high power supply quality |
-
2013
- 2013-11-30 CN CN201310639763.6A patent/CN104682423A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602566A (en) * | 2017-03-07 | 2017-04-26 | 四川师范大学 | Superconductive AC-DC customized electric power system having high power supply quality |
| CN106602566B (en) * | 2017-03-07 | 2019-01-29 | 四川师范大学 | A kind of superconduction alternating current-direct current custom power system |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |