CN202906492U

CN202906492U - Solar cell panel generating monitoring system based on DC carrier wave technology

Info

Publication number: CN202906492U
Application number: CN2012206399365U
Authority: CN
Inventors: 彭良平; 杜毅
Original assignee: Dongfang Hitachi Chengdu Electric Control Equipment Co Ltd
Current assignee: Dongfang Hitachi Chengdu Electric Control Equipment Co Ltd
Priority date: 2012-11-28
Filing date: 2012-11-28
Publication date: 2013-04-24
Anticipated expiration: 2022-11-28

Abstract

Disclosed is a solar cell panel generating monitoring system based on the DC carrier wave technology. The monitoring system is arranged between a PV array and a grid-connected inverter connected to an electrical network. The monitoring system comprises a monitoring submachine, a monitoring host, a DC line, and a data collection terminal, wherein the monitoring submachine is connected with each cell panel or battery column in the PV array; the collected generating data is transmitted to the monitoring host via the DC line; the monitoring host demodulates the generating data and transmits the demodulated data to the data collection terminal; and the data collection terminal returns the collected generating data to a server or a data center via the network. The solar cell panel generating monitoring system of the utility model is capable of automatically and rapidly locating the fault points and monitoring the generating capacity of each cell panel (or battery column) in a real-time manner. When something is wrong, the solar cell panel generating monitoring system of the utility model informs the users via an alarm or an E-mail, thereby making users instantly make corresponding reactions. As no extra communication lines are needed, the cost is decreased.

Description

A kind of solar panel power generation monitoring system based on the direct current ZAP

Technical field

The utility model relates to a kind of power generation monitoring system, relates in particular to a kind of solar panel power generation monitoring system based on the direct current ZAP.

Background technology

In solar energy power generating, especially photovoltaic plant has a lot of cell panels usually.Take 10MW as example, nearly 50,000 pieces of cell panel, land area accounts for 200,000m ²(approximately 30 football pitchs).When some cell panels break down, usually can't locate fast the fault point.For the photovoltaic plant without the solar panel power generation monitoring system, usually the desired generating of Utilities Electric Co. is guaranteed to realize (unless increasing installed capacity); Can not find out as early as possible the fault solar panel; If need generating to guarantee, then can cause equipment investment and safeguard that labour cost increases.Monitoring method is also relatively backward, usually relies on visual method to judge whether to break down according to the external situation of cell panel, in order to find fast the fault point, usually applies the strategy of throwing waves of people into action, and efficient is extremely low and cost of human resources is expensive.

The utility model content

The purpose of this utility model is to provide a kind of solar panel power generation monitoring system based on the direct current ZAP, can carry out automatically-monitored to solar panel or battery pack row, rapid failure judgement cell panel, need not manual intervention, need not additionally to increase communication channel, be beneficial to plant maintenance.

The utility model adopts following technical scheme to realize:

A kind of solar panel power generation monitoring system based on the direct current ZAP, this supervisory control system is arranged between PV array and the combining inverter, described combining inverter access electrical network, it is characterized in that, comprise the monitoring extension set in the supervisory control system, monitoring host computer and AC line, every cell panel or battery pack row in described monitoring extension set and the PV array link to each other, the generating data communication device that collects is crossed DC power line pass to monitoring host computer, the described monitoring host computer data of will generating electricity are carried out demodulation and are sent to the data collector terminal, generating data return service device or data center that described data collector terminal will be collected by network.

Further, the cell panel that is positioned at the head and the tail two ends in the described battery pack row is drawn respectively anodal wiring and is linked to each other with described monitoring extension set with the negative pole wiring, and the positive pole of battery pack adjacent cell panel in being listed as links to each other successively with negative pole.

The useful technique effect that the utility model possesses is: in the prior art in order to find fast the fault point, usually apply the strategy of throwing waves of people into action, efficient is extremely low and cost of human resources is expensive, and power generation monitoring system of the present utility model can remedy this shortcoming, can locate rapidly the fault point, by energy output that can every cell panel of Real Time Monitoring (perhaps battery pack row) to the monitoring of cell panel operating state.When it breaks down, can inform the user in the mode of warning or mail, so that the user makes a response at once.Solar panel power generation monitoring system of the present utility model relies on the solar power generation existing equipment, rely on the direct current ZAP to communicate, need not to increase the additional communication circuit, only need at monitored object place installation monitoring extension set, can not impact existing power station mounting means, so that greatly reduce for the first installation cost expense in power station, can a plurality of electricity generation system high efficiency of centralized monitor battery maintenance plate be kept by energy output, monitoring application program and communication software can be installed in local data center or be installed in server or the data center that the user prepares.

Description of drawings

Fig. 1 is the structural representation of solar power system.

Fig. 2 is the schematic diagram that the monitoring extension set is measured every cell panel generating data.

Fig. 3 is that the monitoring extension set is measured cell plate group row generating schematic diagram data

Fig. 4 monitoring application program monitoring interface schematic diagram

Two electricity generation system data of Fig. 5 transmit schematic diagram

Embodiment

By following description to embodiment; to more help public understanding the utility model; but can't the specific embodiment that the applicant is given be considered as the restriction to technical solutions of the utility model, any definition to parts or technical characterictic change and/or to overall structure do form and immaterial conversion all should be considered as the protection range that the technical solution of the utility model limits.

As shown in Figure 1, the electric energy that sends of solar photovoltaic cell panel is converted into AC energy by inverter and sends to electrical network.

Such as Fig. 2 to power generation monitoring system of the present utility model shown in Figure 4, this supervisory control system is arranged between PV array and the combining inverter, combining inverter access electrical network, comprise the monitoring extension set in the supervisory control system, monitoring host computer, AC line and data collector terminal, every cell panel or battery pack row in monitoring extension set and the PV array link to each other, the monitoring extension set carries out real time monitoring to every cell panel (perhaps battery pack row) operating state and gathers relevant generating data (such as PV voltage, the PV electric current, battery temperature, generated output etc.), the monitoring extension set is high-frequency pulse signal by CPU with the cell plate voltage of collection and the digital signal modulated of cell panel electric current, the generating data that then will gather are converted into high-frequency signal and are coupled to and pass to monitoring host computer on the AC line, monitoring host computer carries out demodulation with the generating data of transmitting on the AC line, monitoring host computer gathers by CPU to the high-frequency signal that transmits on the line, the modem procedue of settling signal in CPU is reduced into real generating data.Then the data communication device that will generate electricity is crossed communication and is sent to the data collector terminal.With the field data return service device or the data center that collect, software section is communication software and the monitoring application program in server or data center's use by network in the data collector terminal.When gathering the generating data in the battery pack row, the cell panel that is positioned at the head and the tail two ends in the battery pack row is drawn respectively anodal wiring and is linked to each other with described monitoring extension set with the negative pole wiring, and the positive pole of battery pack adjacent cell panel in being listed as links to each other successively with negative pole.Fig. 4 represents the operation interface of server or data center, and monitoring application program is processed in real time to the generating data of returning, the corresponding functions such as completion status detection and fault alarm.

As shown in Figure 5, when a plurality of electricity generation system of the utility model centralized monitor, the data communication device of each system is crossed the monitoring host computer unification and is sent to the data collector terminal, wherein the data collector terminal links to each other with two or more monitoring host computer respectively, then the data collector terminal is concentrated by network and is delivered to data center, finishes relevant treatment.

Certainly; the utility model can also have other various embodiments; in the situation that do not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the utility model.

Claims

1. solar panel power generation monitoring system based on the direct current ZAP, this supervisory control system is arranged between PV array and the combining inverter, described combining inverter access electrical network, it is characterized in that, comprise the monitoring extension set in the supervisory control system, monitoring host computer and AC line, every cell panel or battery pack row in described monitoring extension set and the PV array link to each other, the generating data communication device that collects is crossed DC power line pass to monitoring host computer, the described monitoring host computer data of will generating electricity are carried out demodulation and are sent to the data collector terminal, generating data return service device or data center that described data collector terminal will be collected by network.

2. the solar panel power generation monitoring system based on the direct current ZAP according to claim 1, it is characterized in that, the cell panel that is positioned at the head and the tail two ends in the described battery pack row is drawn respectively anodal wiring and is linked to each other with described monitoring extension set with the negative pole wiring, and the positive pole of battery pack adjacent cell panel in being listed as links to each other successively with negative pole.