CN202453732U - Tracking type photovoltaic power generation system capable of conducting self-detection and protection early-warning - Google Patents
Tracking type photovoltaic power generation system capable of conducting self-detection and protection early-warning Download PDFInfo
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- CN202453732U CN202453732U CN 201220045698 CN201220045698U CN202453732U CN 202453732 U CN202453732 U CN 202453732U CN 201220045698 CN201220045698 CN 201220045698 CN 201220045698 U CN201220045698 U CN 201220045698U CN 202453732 U CN202453732 U CN 202453732U
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Abstract
The utility model discloses a tracking type photovoltaic power generation system capable of conducting self-detection and protection early-warning, which comprises a central controller, a terminal controller and a motor frequency converter, wherein the terminal controller is electrically connected with the motor frequency converter, and the terminal controller transmits the obtained data signals from the motor frequency converter to the central controller through a data bus. Through an industrial bus communication mode, the system can monitor the real-time power output of the motor frequency converter, so as to achieve self-protection, real-time maintenance and real-time early-warning, protect a motor and a transmission from being damaged in severe weather, and avoid the damage of an accelerating component due to aging of the motor and the transmission.
Description
Technical field
The utility model relates to field of photovoltaic power generation, particularly, relates to a kind of tracing type photovoltaic electricity generation system that can the oneself detects the protection early warning.
Background technology
The tracing type photovoltaic electricity generation system is mainly used in; In the middle of the process of photovoltaic generation; Through photovoltaic battery panel being fixed on above the mechanical rotation system equipment that has current orientation of the sun and angle of pitch tracking power; Find the maximization that turns to current the best to accept the angle and the position of sun power, be used for increasing substantially the generating capacity of conventional photovoltaic cell panel.The real world applications environment is that changeable and probabilistic, present tracker has following problem, first; At high wind or other natural inclement weathers; Perhaps under the emergency case influence, motor rotates and receives big resistance or thrust, and on-site real-time detects the self-protection function owing to do not have timely; Cause the damage of motor or variator, thereby make the total system paralysis.The second, As time goes on, variator and motor are aging; Perhaps certain rotatable parts of system are aging gets rusty; Do not safeguarded timely, cause motor to rotate equally receiving big friction force and the damage of acceleration components and scrapping, and consume the too much energy.
The utility model content
The purpose of the utility model is, to the problems referred to above, proposes a kind of tracing type photovoltaic electricity generation system that can the oneself detects the protection early warning, to realize the advantage of protection motor and variator.
For realizing above-mentioned purpose, the technical scheme that the utility model adopts is:
A kind of tracing type photovoltaic electricity generation system that can the oneself detects the protection early warning; Comprise central controller, terminal control unit and motor frequency conversion device; Said terminal control unit is electrically connected with the motor frequency conversion device, and said terminal control unit passes to central controller with the data-signal of the motor frequency conversion device that obtains through data bus.
Further, said terminal control unit utilizes RS485 communication protocol to be connected with central controller.
The technical scheme of the utility model provides a kind of can the oneself detect the tracing type photovoltaic electricity generation system of protecting early warning; Through the industrial bus communication mode, the power output that monitoring motor frequency conversion device is real-time, thus reach self-protection; Real-time servicing; Real-time early warning is not damaged and because of the wear out purpose of the acceleration components damage that causes of variator and motor at inclement weather thereby reach protection motor and variator.
Further feature of the utility model and advantage will be set forth in instructions subsequently, and, partly from instructions, become obvious, perhaps understand through implementing the utility model.The purpose of the utility model can realize through the structure that in the application's instructions, claims and accompanying drawing, is particularly pointed out and obtain with other advantages.
Through accompanying drawing and embodiment, the technical scheme of the utility model is done further detailed description below.
Description of drawings
Accompanying drawing is used to provide the further understanding to the utility model, and constitutes the part of instructions, is used to explain the utility model with the embodiment of the utility model, does not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 is the described tracing type photovoltaic electricity generation system fundamental diagram that can the oneself detects the protection early warning of the utility model embodiment;
Fig. 2 is the described workflow diagram that can self-ly detect the tracing type photovoltaic electricity generation system of protection early warning of the utility model embodiment;
Fig. 3 is the described tracing type photovoltaic electricity generation system work structuring synoptic diagram that can the oneself detects the protection early warning of the utility model embodiment.
Embodiment
Describe below in conjunction with the preferred embodiment of accompanying drawing, should be appreciated that preferred embodiment described herein only is used for explanation and explains the utility model, and be not used in qualification the utility model the utility model.
As shown in Figure 1; A kind of tracing type photovoltaic electricity generation system that can the oneself detects the protection early warning; Comprise central controller, terminal control unit and motor frequency conversion device; Terminal control unit utilizes lead to be connected with the motor frequency conversion device, and terminal control unit passes to central controller with the data-signal of the motor frequency conversion device that obtains through data bus.Wherein terminal control unit utilizes RS485 communication protocol to be connected with central controller.
Its principle of work is that the output power of motor says that from the angle of electric current P=I^2 * R. says P=moment of torsion * angular velocity from the angle of machinery.Suppose that rotational angular is constant, when big resistance appearred in various burst nature situation such as high wind, the moment of torsion of motor increased; The linear ratio of power rises; Same when ageing equipment is got rusty, friction force increases, in order to keep CAV; Improved the moment of torsion of motor equally, the also linear ratio of power rises.
Concrete implementation is; In controller the inside operation one real-time monitor (RTM), the current power output of obtaining the frequency converter under the current controller control in real time as shown in Figure 2 of its concrete workflow is when the of short duration unexpected rising of power output; And the time greater than warning power; To the motor power supply, motor does not quit work controller dormancy frequency converter, and output error is to central controller.When power rises gradually, and be higher than the power bracket of operate as normal, explain that part aging needs maintenance, reports an error to central controller simultaneously in long-term a period of time.
As shown in Figure 3, central controller wherein adopts the AT91SAM9G20 of Atmel, and communication bus protocol adopts ModBus RTU, and the motor frequency conversion device is that Omron company model is the 200V class of X2, and the motor frequency conversion device is in series with motor.
In sum, the utlity model has following beneficial effect:
1, under inclement weather, such as playing under the disaster property weather conditions such as high wind automatically motor is cut off the power supply, protection equipment is not destroyed;
2, automatic checkout system aging conditions and duty, equipment played provides maintenance information in real time, lets aging equipment in time obtain safeguarding;
3, report an error early warning in real time.
What should explain at last is: the above is merely the preferred embodiment of the utility model; Be not limited to the utility model; Although the utility model has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (2)
1. one kind can the oneself be detected the tracing type photovoltaic electricity generation system of protecting early warning; It is characterized in that; Comprise central controller, terminal control unit and motor frequency conversion device; Said terminal control unit is electrically connected with the motor frequency conversion device, and said terminal control unit passes to central controller with the data-signal of the motor frequency conversion device that obtains through data bus.
2. the tracing type photovoltaic electricity generation system that can the oneself detects the protection early warning according to claim 1 is characterized in that said terminal control unit utilizes RS485 communication protocol to be connected with central controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220045698 CN202453732U (en) | 2012-02-13 | 2012-02-13 | Tracking type photovoltaic power generation system capable of conducting self-detection and protection early-warning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220045698 CN202453732U (en) | 2012-02-13 | 2012-02-13 | Tracking type photovoltaic power generation system capable of conducting self-detection and protection early-warning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202453732U true CN202453732U (en) | 2012-09-26 |
Family
ID=46869585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220045698 Expired - Lifetime CN202453732U (en) | 2012-02-13 | 2012-02-13 | Tracking type photovoltaic power generation system capable of conducting self-detection and protection early-warning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202453732U (en) |
-
2012
- 2012-02-13 CN CN 201220045698 patent/CN202453732U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120926 |