CN204442018U - Based on the microgrid inverter supervising device of wireless communications mode - Google Patents

Abstract

The utility model discloses a micro-grid inverter monitoring device based on a wireless communication mode, which includes a monitoring center computer, a GPRS network, a coordinator, a wireless monitoring terminal node, a sensor component, and an alarm and execution component. The GPRS network is communicatively connected with the monitoring center computer and the wireless monitoring terminal node, and the sensor component, the alarm and execution component are respectively connected with the wireless monitoring terminal node. Through the above method, the microgrid inverter monitoring device based on the wireless communication mode of the present invention can make the voltage, current, and frequency work normally and stably, according to the conditions of the voltage, current, and frequency parameters, and whether the harmonic components exceed the standard , to judge whether the micro-grid inverter is working normally, the monitoring accuracy of the device is high, timely and fast, which improves the work efficiency, and can uniformly manage the remote and dispersed micro-grid inverters.

Description

Microgrid inverter monitoring device based on wireless communication mode

technical field

The utility model relates to a micro-grid inverter device, in particular to a micro-grid inverter monitoring device based on a wireless communication mode.

Background technique

Microgrid is an emerging field of energy utilization, which is a power generation application system, which uses distributed power sources such as photovoltaic power generation systems, wind power generation systems, and micro gas turbine power generation systems to store the generated electric energy in the energy storage system. When the user needs to use AC power, the inverter converts the DC power stored in the energy storage system into AC power and sends it to the user's load through the transmission line.

In the application of micro-grid inverters, it is necessary to monitor the inverter to ensure that the entire system can work normally and smoothly, and it is necessary to monitor the possible abnormal conditions of the micro-grid inverter to accurately locate the fault. The location of microgrid inverters, these are urgent problems to be solved in the application field of decentralized microgrid inverters.

Utility model content

The technical problem mainly solved by the utility model is to provide a microgrid inverter monitoring device based on a wireless communication mode. work efficiency.

In order to solve the above technical problems, a technical solution adopted by the utility model is to provide a microgrid inverter monitoring device based on a wireless communication mode, including a monitoring center computer, a GPRS network, a coordinator, a wireless monitoring terminal node, and a sensor assembly and an alarm and execution component, the coordinator communicates with the monitoring center computer and the wireless monitoring terminal node through the GPRS network, and the sensor component, the alarm and execution component are respectively connected with the wireless monitoring terminal node connected.

In a preferred embodiment of the present utility model, the coordinator is one or more, and the coordinator includes a Zigbee coordinator module and a GPRS remote communication module, the wireless monitoring terminal node, the Zigbee coordinator module, The GPRS remote communication module and the monitoring center computer are sequentially connected through the GPRS network.

In a preferred embodiment of the present utility model, the coordinator adopts short-distance wireless data transmission based on Zigbee technology and long-distance wireless data transmission mode based on GPRS technology, and the wireless monitoring terminal node transmits information to the Zigbee Coordinator module, simultaneously described Zigbee coordinator module adopts the mode of serial port communication to transmit information to described GPRS remote communication module, and described GPRS remote communication module transmits to monitoring center computer by GPRS network 2.

In a preferred embodiment of the present utility model, there are one or more wireless monitoring terminal nodes, and each wireless monitoring terminal node is respectively placed on the different microgrid inverters.

In a preferred embodiment of the utility model, the sensor assembly includes one or more of a voltage sensor, a current sensor, and a frequency sensor, the voltage sensor detects the voltage of the microgrid inverter, and the current A sensor detects the current of the microgrid inverter, and the frequency sensor detects a frequency signal.

The beneficial effects of the utility model are: the microgrid inverter monitoring device based on the wireless communication mode of the utility model can automatically monitor the voltage, current and frequency changes of the microgrid inverter and its supporting equipment, and start it in time according to the needs The automatic adjustment of the execution unit enables this type of microgrid inverter to work normally and smoothly. It can also judge whether the microgrid inverter is faulty according to whether the measured voltage, current, and frequency parameters are abnormal. The location of the microgrid inverter can be determined according to the number of the Zigbee terminal node on the microgrid inverter. The monitoring accuracy of the device is high, problems can be found in time and quickly, operation errors of manual inspection can be reduced, manpower is saved, and work efficiency is improved. It is the most effective technical means for unified management of long-distance dispersed micro-grid inverters.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work, wherein:

Fig. 1 is a structural schematic diagram of a preferred embodiment of the microgrid inverter monitoring device based on the wireless communication mode of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1, the utility model embodiment comprises:

A microgrid inverter monitoring device based on a wireless communication mode, including a monitoring center computer 1, a GPRS network 2 for long-distance wireless communication, a coordinator 3 for data transmission between the monitoring center computer 1, and a wireless monitoring terminal Node 4, sensor component 5 and alarm and execution component 6. The coordinator 3 carries out long-distance wireless data communication with the monitoring center computer 1 and the wireless monitoring terminal node 4 through the GPRS network 2 at the same time, and the sensor component 5, the alarm and execution component 6 respectively communicate with the The above wireless monitoring terminal nodes are connected to 4 phases, and different microgrid inverters can be group monitored.

The wireless monitoring terminal node 4 is placed on the microgrid inverter 7 . The sensor assembly 5 is composed of a voltage sensor, a current sensor and a frequency sensor, the voltage sensor detects the voltage of the microgrid inverter 7, the current sensor detects the current of the microgrid inverter 7, and the The frequency sensor detects the frequency signal. When the voltage and current parameters detected by the sensor assembly 5 do not meet the requirements, the alarm is directly started and the execution unit in the execution assembly 6 is adjusted for voltage, current, and frequency. The frequency signal can determine whether the microgrid inverter is damaged or stolen.

The coordinator 3 is composed of a Zigbee coordinator module of a wireless sensor network and a GPRS remote communication module, and adopts short-distance wireless data transmission based on Zigbee technology and long-distance wireless data transmission mode based on GPRS technology respectively. The wireless monitoring terminal node 4 transmits information to the Zigbee coordinator module in the coordinator 3, which improves the response time and accuracy of monitoring, and is conducive to timely detection of the wind turbines and photovoltaic modules on the microgrid inverter 7 work situation. Simultaneously the Zigbee coordinator module in the coordinator 3 adopts the mode of serial port communication to transmit information to the GPRS remote communication module in the coordinator 3, then with the mode of remote wireless communication through the GPRS remote communication module, by GPRS network 2, data is transmitted to Monitoring center computer 1.

The micro-grid inverter monitoring device of the utility model can automatically monitor the voltage and current changes of the micro-grid inverter and its supporting equipment, and adjust in time according to needs so that this type of power supply can work normally and stably. It can also judge whether the microgrid inverter is damaged or stolen according to the absence of the measured voltage and current parameters, and whether the frequency signal is detected. The location of the microgrid inverter can be determined according to the number of the Zigbee terminal node on the microgrid inverter. The device has high monitoring accuracy, is timely and rapid, saves manpower, and improves work efficiency. It is the most effective technical means for unified management of a large number of scattered microgrid inverters.

The above is only an embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process conversion made by using the content of the specification of the utility model, or directly or indirectly used in other related technologies Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (5)

1. A microgrid inverter monitoring device based on a wireless communication mode, characterized in that it includes a monitoring center computer, a GPRS network, a coordinator, a wireless monitoring terminal node, a sensor component and an alarm and an execution component, and the coordinator passes through The GPRS network is communicatively connected with the monitoring center computer and the wireless monitoring terminal node, and the sensor component, the alarm and execution component are respectively connected with the wireless monitoring terminal node. 2. The microgrid inverter monitoring device according to claim 1, wherein the coordinator is one or more, and the coordinator includes a Zigbee coordinator module and a GPRS remote communication module, and the wireless monitoring The terminal node, the Zigbee coordinator module, the GPRS remote communication module and the monitoring center computer are sequentially connected through the GPRS network. 3. The microgrid inverter monitoring device according to claim 2, wherein the coordinator adopts short-range wireless data transmission based on Zigbee technology and long-distance wireless data transmission mode based on GPRS technology, and the wireless The monitoring terminal node transmits information to the Zigbee coordinator module, and the Zigbee coordinator module transmits information to the GPRS remote communication module by means of serial port communication, and the GPRS remote communication module transmits the information to the monitoring center through the GPRS network computer. 4. The microgrid inverter monitoring device according to claim 1, wherein there are one or more wireless monitoring terminal nodes, and each wireless monitoring terminal node is respectively placed in the different microgrids on the inverter. 5. The microgrid inverter monitoring device according to claim 1, wherein the sensor component includes one or more of a voltage sensor, a current sensor, and a frequency sensor, and the voltage sensor detects that the micro The average output voltage of the grid inverter, the current sensor detects the current of the micro grid inverter, and the frequency sensor detects the frequency signal of the micro grid inverter.