CN210806752U - Grid-connected inversion power supply system - Google Patents
Grid-connected inversion power supply system Download PDFInfo
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- CN210806752U CN210806752U CN201921441753.0U CN201921441753U CN210806752U CN 210806752 U CN210806752 U CN 210806752U CN 201921441753 U CN201921441753 U CN 201921441753U CN 210806752 U CN210806752 U CN 210806752U
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Abstract
The embodiment of the utility model discloses grid-connected inverter power supply system for to the dispersion in different positions and respectively for different application system provide a plurality of storage battery of emergency power source feed net control, a serial communication port, the system includes a plurality of contravariant dischargers and cloud management platform, each contravariant discharger includes communication module, inverter module and output are connected to the contravariant control module of inverter module control end, the input of the inverter module of each contravariant discharger is connected to a corresponding storage battery, and the output of inverter module is connected to a regional electric wire netting; the cloud management platform is respectively in communication connection with each inversion discharge instrument through a connection network, and sends a discharge instruction to an inversion control module of each inversion discharge instrument, and each inversion control module controls a corresponding inverter module to feed electricity to a regional power grid according to the discharge instruction from the cloud management platform, so that the problems of insecurity and environmental pollution generated when the storage battery pack is subjected to capacity detection are solved.
Description
Technical Field
The utility model relates to an electrical control field especially relates to a contravariant power supply system that is incorporated into power networks.
Background
The direct current backup power supply is widely applied to units such as communication, transformer substations, power plants, hospitals, banks and the like. The backup power supply is periodically detected according to the maintenance regulation requirement of the backup power supply, and a capacity check is carried out in the detection content, namely whether the stored electric quantity of the storage battery meets the index requirement is checked. The current general detection method is to check through a discharge test, namely, a resistor is connected to a battery to be detected to discharge, in the discharge process, the resistor generates heat to consume the electric quantity of the battery, the electric quantity consumed by the resistor is measured through a voltammetry method, the aim of measuring the actual stored electric quantity of the battery is achieved, and the battery which does not reach the standard is maintained or replaced. In the discharging process, the energy of the battery is dissipated in a heat mode, so that the battery is not safe and environment-friendly.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a contravariant power supply system that is incorporated into power networks to when solving through the method that resistance generates heat and consumes battery power and come to carry out the capacity detection to reserve power, produced unsafe problem and not environmental protection problem.
A grid-connected inversion power supply system is used for feeding and controlling a plurality of storage battery packs which are dispersed at different positions and respectively provide emergency power supplies for different application systems, and comprises a plurality of inversion discharging instruments and a cloud management platform, wherein each inversion discharging instrument comprises a communication module, an inverter module and an inversion control module of which the output end is connected to the control end of the inverter module, the input end of the inverter module of each inversion discharging instrument is connected to a corresponding storage battery pack, and the output end of the inverter module is connected to a regional power grid; the cloud management platform is respectively in communication connection with each inversion discharge instrument through a connection network, and sends a discharge instruction to an inversion control module of each inversion discharge instrument, and each inversion control module controls the corresponding inverter module to feed electricity to the regional power grid according to the discharge instruction from the cloud management platform.
Preferably, the grid-connected inverter power supply system further comprises a terminal device connected to the cloud management platform, and the cloud management platform sends a discharge instruction to an inverter control module of one or more inverter discharge instruments according to a request of the terminal device.
Preferably, the inverter discharge instrument further comprises a sampling module connected to an output end of the inverter module, and the sampling module samples the current output by the inverter module within a preset time period and transmits the current to the cloud management platform through the communication module.
Preferably, the cloud management platform further comprises: and the storage module is used for storing the ID information transmitted when the inverted discharging instrument is accessed and registered.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic diagram of a grid-connected inverter power supply system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a grid-connected inverter power supply system according to another embodiment of the present invention;
fig. 3 is a schematic diagram of a grid-connected inverter power supply system according to another embodiment of the present invention;
fig. 4 is a schematic diagram of a grid-connected inverter power supply system according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
When measuring capacity to reserve power supply through the method of resistance heating consumption battery electric quantity, produced unsafe problem and not environmental protection problem, the embodiment of the utility model provides a contravariant power supply system is incorporated into power networks.
The embodiment of the utility model provides a contravariant power supply system that is incorporated into power networks for a plurality of batteries that provide emergency power source for different application system respectively are presented the net control. As shown in fig. 1, the grid-connected inverter power supply system includes: the system comprises a plurality of inverse discharging instruments 1 and a cloud management platform 2, wherein the inverse discharging instruments 1 can be located at different physical positions, and each inverse discharging instrument 1 is connected to a direct current backup power source (namely a storage battery pack 3), such as the direct current backup power source of units such as communication, transformer substations, power plants, hospitals and banks. Each of the above-mentioned inverter discharge devices 1 includes a communication module 11, an inverter control module 12, and an inverter module 13.
The communication module 11 can communicate with the cloud management platform 2 through a connection network (internet, lan, communication network, etc.), so that the cloud management platform 2 can transmit instructions and information to the inverter control module 12.
The inverter module 13 may be a full bridge inverter, which may convert an input dc power into an ac power through a plurality of semiconductor switching tubes (e.g., IGBTs, MOSFETs, etc.) and output the ac power. In the present exemplary embodiment, the input of the inverter module 13 is connected to a corresponding battery pack 3, and the output of the inverter module 13 is connected to a local power grid 4. The inverter module 13 converts the direct current of the storage battery 3 connected to the inverter discharge instrument 1 into an alternating current under the control of the corresponding inverter control module 12 (i.e., the inverter control module 12 in the same inverter discharge instrument 1) and outputs the alternating current to the regional power grid 4. Specifically, the inverter control module 12 may drive the semiconductor switch tubes to be turned on or off by outputting PWM signals or SPWM signals to the semiconductor switch tubes in the inverter module 13, so as to realize electric energy conversion.
Specifically, the cloud management platform 2 is connected to the inversion discharger 1 through a connection network, so that the communication module 11 receives a power grid fault instruction sent by the cloud management platform and forwards the power grid fault instruction to the inversion control module 12, and the inversion control module 12 controls the corresponding inverter module 13 to feed power to the regional power grid 4 according to the power grid fault information. The grid fault information can be input through a human-computer interaction interface (for example, when a substation or a line connecting the regional grid 4 and the main grid needs to be repaired), and can also be automatically generated according to the load condition of the regional grid 4. When the inverter discharge instrument 1 receives the grid fault information from the cloud management platform 2, the inverter control module 12 controls the corresponding inverter module 13 to feed power to the regional grid 4 according to the grid fault information.
The embodiment of the utility model provides a through generating the instruction of discharging according to the electric wire netting fault information to the direct current contravariant back feed-in electric wire netting of the battery that controls awaiting measuring (also be storage battery) output, consequently can not produce a large amount of heats when checking storage battery's capacity, avoids directly operating storage battery, uses safelyr. After the direct current in the storage battery pack is inverted, the direct current is transmitted to a power grid user through a power grid for use, so that the stored energy in the storage battery pack is effectively utilized, and the problem of environmental pollution in conventional discharge is solved.
As shown in fig. 2, the embodiment of the utility model provides another kind of contravariant power supply system that is incorporated into the power networks, this system still included the terminal equipment 5 who is connected to cloud management platform 2 on the basis of the contravariant system that is incorporated into the power networks that above-mentioned embodiment provided, and contravariant discharge appearance 1 passes through the battery capacity detection instruction of cloud management platform 2 receiving terminal equipment 5 to control corresponding storage battery to the feed of regional electric wire netting 4. The terminal device 5 may be a mobile phone APP or computer software established based on the cloud management platform 2. The user operates the terminal device 5 to trigger the storage battery capacity detection instruction, and the inverse discharge instrument 1 receives the storage battery capacity detection instruction forwarded by the cloud management platform 2, so that the storage battery pack connected with the inverse discharge instrument 1 is controlled to discharge to the corresponding regional power grid 4 according to the instruction. For example, when the storage battery of a hospital needs to be detected, the user may query the identification information of the inverter discharge instrument 1 of the hospital, such as ID information at the time of registration, from the cloud management platform 2 according to the physical address of the hospital, and issue a storage battery capacity detection instruction to the inverter discharge instrument 1 of the ID corresponding to the physical address of the hospital, thereby feeding power to the corresponding regional power grid 4.
As shown in fig. 3, in another embodiment of the present invention, the inverter discharge device 1 further includes a sampling module 14 connected to the output end of the inverter module 13, and the sampling module 14 samples the current output by the inverter module 13 within a preset time period, and transmits the current to the cloud management platform 2 through the inverter control module 12 and the communication module 11.
The inversion control module 12 may control the corresponding inverter module 13 to perform constant current discharge to the regional power grid 4 within a preset time period, and sample the current during discharge through the sampling module 14 to obtain discharge information, and send the discharge information to the cloud management platform 2, so that the cloud management platform 2 detects the capacity of the storage battery pack according to the discharge information. It should be noted that the reason why the inverter constant-current discharge corresponding to the control is controlled here is that, in the constant-current discharge process, the magnitude of the current flowing in the unit time is constant, so that the state information of the storage battery pack is calculated more accurately. For example, the cloud management platform 2 may calculate the state information of the corresponding storage battery pack according to the following calculation formula:
Ah＝I*T
wherein Ah is the capacity of the storage battery pack, I is the sampled current, and T is the discharge duration.
According to the embodiment, the terminal device 5 enables a user to perform information interaction with the cloud management platform 2, the user operates the terminal device 5 to trigger the storage battery capacity detection instruction, the corresponding storage battery pack can be controlled to discharge, the discharge information is obtained, and the like, so that remote control is realized, and the user can control the storage battery pack more conveniently.
In addition, as shown in fig. 4, in the above embodiment, in order to remotely control the specified storage battery pack to feed to the local power grid 4, it is necessary to perform access registration on the cloud management platform 2 for the inverter discharge instrument 1, and store some identification information of the inverter discharge instrument 1, so that a user can operate on the terminal device 5 to control the specified inverter discharge instrument 1 to operate. The utility model discloses an in the embodiment, cloud management platform 2 is including the storage module 21 of the ID information of transmission when contravariant discharge appearance 1 inserts the registration. Before the storage battery pack is controlled to discharge, the inversion discharge instrument 1 is accessed and registered on the cloud management platform 2, so that the cloud management platform can obtain the authority for controlling the inversion discharge instrument 1, and the cloud management platform 2 can conveniently control the inversion discharge instrument 1 which is successfully accessed and registered. The cloud management platform 2 receives an access registration request including the ID of the inverter discharge instrument 1 sent by the inverter discharge instrument 1, and sends the ID to the terminal device 5 of the user, so that the user can confirm whether the inverter discharge instrument 1 corresponding to the ID is allowed to access according to the ID, and after confirming that the inverter discharge instrument 1 corresponding to the ID is allowed to access, the user generates registration information, and stores the ID in the storage module 21. Illustratively, after the cloud management platform 2 receives a storage battery capacity detection instruction sent by a user on the terminal device 5 and specifies to control the inverted discharge instrument 1 of the hospital to discharge, the cloud management platform 2 queries the storage module 21 according to a physical address of the hospital, extracts an ID of the inverted discharge instrument 1 in a hospital area, and forwards the storage battery capacity detection instruction to the inverted discharge instrument 1 of the hospital according to the ID, so as to control the storage battery pack of the hospital to feed the regional power grid 4 of the hospital.
The above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (4)
1. A grid-connected inversion power supply system is used for feeding and controlling a plurality of storage battery packs which are dispersed at different positions and respectively provide emergency power supplies for different application systems, and is characterized by comprising a plurality of inversion discharging instruments and a cloud management platform, wherein each inversion discharging instrument comprises a communication module, an inverter module and an inversion control module of which the output end is connected to the control end of the inverter module, the input end of the inverter module of each inversion discharging instrument is connected to a corresponding storage battery pack, and the output end of the inverter module is connected to a regional power grid; the cloud management platform is respectively in communication connection with each inversion discharge instrument through a connection network, and sends a discharge instruction to an inversion control module of each inversion discharge instrument, and each inversion control module controls the corresponding inverter module to feed electricity to the regional power grid according to the discharge instruction from the cloud management platform.
2. The grid-connected inverter power supply system according to claim 1, further comprising a terminal device connected to the cloud management platform, wherein the cloud management platform sends a discharge instruction to an inverter control module of one or more inverter discharge meters according to a request of the terminal device.
3. The grid-connected inverter power supply system according to claim 2, wherein the inverter discharge meter further comprises a sampling module connected to an output end of the inverter module, and the sampling module samples a current output by the inverter module within a preset time period and transmits the current to the cloud management platform through the communication module.
4. The grid-connected inverter power supply system according to claim 3, wherein the cloud management platform further comprises: and the storage module is used for storing the ID information transmitted when the inverted discharging instrument is accessed and registered.
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| CN201921441753.0U CN210806752U (en) | 2019-08-30 | 2019-08-30 | Grid-connected inversion power supply system |
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| CN201921441753.0U CN210806752U (en) | 2019-08-30 | 2019-08-30 | Grid-connected inversion power supply system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571837A (en) * | 2019-08-30 | 2019-12-13 | 深圳市东宸智造科技有限公司 | grid-connected inverter power supply system and method |
| CN112151893A (en) * | 2020-09-30 | 2020-12-29 | 大庆辉谷能源科技有限公司 | Storage battery with USB output electric energy controllable |
-
2019
- 2019-08-30 CN CN201921441753.0U patent/CN210806752U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571837A (en) * | 2019-08-30 | 2019-12-13 | 深圳市东宸智造科技有限公司 | grid-connected inverter power supply system and method |
| CN112151893A (en) * | 2020-09-30 | 2020-12-29 | 大庆辉谷能源科技有限公司 | Storage battery with USB output electric energy controllable |
| CN112151893B (en) * | 2020-09-30 | 2022-02-08 | 大庆辉谷能源科技有限公司 | Storage battery with USB output electric energy controllable |
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