CN222262247U - A microgrid monitoring system - Google Patents
A microgrid monitoring system Download PDFInfo
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- CN222262247U CN222262247U CN202323646313.8U CN202323646313U CN222262247U CN 222262247 U CN222262247 U CN 222262247U CN 202323646313 U CN202323646313 U CN 202323646313U CN 222262247 U CN222262247 U CN 222262247U
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Abstract
The utility model provides a micro-grid monitoring system which comprises a PCS data monitoring device, a battery BMS data monitoring device, a photovoltaic inverter data monitoring device, a video monitoring device and a DI/DO switching value module which are respectively connected to a switch through an RS485 communication line, an air conditioner data monitoring device, an electric energy meter, a grid-connected cabinet electric energy meter and a temperature and humidity transmitter which are respectively connected to a serial server through an RS485 communication line, wherein the switch and the serial server are in communication connection with a local controller, the local controller is used for collecting real-time state information of the micro-grid monitoring system, a local display screen is connected with the local controller through the RS485 communication line, the battery BMS data monitoring device is also in communication connection with the PCS data monitoring device, the local controller is in communication connection with a monitoring host computer EMS, and the monitoring host computer EMS is in communication connection with a display large screen.
Description
Technical Field
The utility model belongs to the technical field of micro-grids, and particularly relates to a micro-grid monitoring system.
Background
At present, the micro-grid at home and abroad is still in an unattended operation management mode, in the operation of the whole power transmission and distribution system, equipment operated in the micro-grid system is in a long-term working state, various conditions cannot be avoided, once the equipment fails, the equipment is powered off, the energy storage equipment is seriously damaged, the equipment is caused to fire and explosion at high temperature, large-area industrial area power failure occurs, the dispatching of micro-grid energy is seriously influenced, and serious economic loss is caused.
In order to realize remote management and automatic monitoring of a micro-grid and meet the requirement of an unattended operation management mode of the micro-grid, the prior art provides a monitoring scheme, such as a CN215186086U distributed micro-grid monitoring system, which comprises a controller, a monitoring device, a server and monitoring equipment, wherein the controller is used for being in communication connection with a generator set of the power grid, the controller is used for collecting real-time state information of the generator set, an RS485 port of the controller is connected with the monitoring device, the monitoring device is in communication connection with the server, and the server is in communication connection with the monitoring equipment. The distributed micro-grid monitoring system can realize the remote monitoring of the real-time state of the power grid. However, this approach focuses only on distributed communications, enabling remote monitoring, and there is no relevant concern for the acquisition of specific field data states, etc.
Object of the Invention
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
The utility model provides a micro-grid monitoring system, comprising:
The monitoring system comprises a monitoring host EMS, a display large screen, a local controller, a switch, a serial port server, a local display screen, a PCS data monitoring device, a battery BMS data monitoring device, a photovoltaic inverter data monitoring device, a video monitoring device, a DI/DO switching value module, an air conditioner data monitoring device, an electric energy meter, a grid-connected cabinet electric energy meter and a temperature and humidity transmitter;
The PCS data monitoring device, the battery BMS data monitoring device, the photovoltaic inverter data monitoring device, the video monitoring device and the DI/DO switching value module are respectively connected to the switch through network cables;
The air conditioner data monitoring device, the electric energy meter, the grid-connected cabinet electric energy meter and the temperature and humidity transmitter are respectively connected to the serial port server through an RS485 communication line;
The switch and the serial port server are in communication connection with the local controller, and the local controller is used for collecting real-time state information of the micro-grid monitoring system;
The local display screen is connected with the local controller through an RS485 communication line;
The battery BMS data monitoring device is also in communication connection with the PCS data monitoring device;
The local controller is in communication connection with the monitoring host EMS network, and the monitoring host EMS is in communication connection with the display large screen.
Based on the above, the DI/DO switching value module is respectively connected with the switching value input ports of the monitoring unit emergency stop button signal, the grid-connected cabinet remote opening indication signal, the grid-connected cabinet remote closing indication signal, the container emergency stop button signal, the container emergency door I signal, the container emergency door II signal, the container water logging signal, the gas extinguishing tray fault signal, the fire alarm signal, the fire spraying signal, the combustible gas fault signal, the combustible gas low concentration alarm signal and the combustible gas high concentration alarm signal.
Based on the above, the temperature and humidity transmitter is connected with the inversion room temperature sensor and is used for collecting the temperature and humidity of the inversion room.
Based on the above, the battery BMS data monitoring device is connected with the battery stack and the battery cluster and is used for collecting the battery stack voltage, the battery stack current, the battery stack SOC, the battery stack SOH, the operating temperature, the battery stack real-time charge and discharge power, the highest battery voltage, the lowest battery voltage, the highest and lowest cell voltages and the battery numbers thereof, the highest battery temperature, the lowest battery temperature, the highest and lowest cell temperatures and the battery numbers thereof, the stack chargeable amount and the stack dischargeable amount;
the system is also used for collecting current, voltage, power, battery energy, chargeable quantity, accumulated charge and discharge quantity, highest and lowest single voltage and battery number of the battery cluster;
and is also used for collecting fault alarm and protection action signals.
Based on the above, the PCS data monitoring device is connected with the switching value and analog quantity input port of the PCS for collecting switching value information and analog quantity information, wherein,
The switching value information comprises states of a direct current side contactor, an alternating current side contactor and a breaker, grid-connected and off-grid operation modes, charging, discharging and standby operation states and states of an on-site operation handle;
the analog quantity information comprises direct-current side voltage, current and power, and alternating-current side three-phase voltage, current, active power and reactive power.
Based on the above, the air conditioning data monitoring device is used for collecting the running state of the air conditioning unit, the starting temperature of the compressor, the stop and check difference value of the compressor, the starting temperature of the heater, the stop and check difference value of the heater, the high-temperature alarm temperature in the cabinet and the low-temperature alarm temperature in the cabinet.
Based on the above, the data monitoring device of the photovoltaic inverter is connected with the switching value and the analog input port of the photovoltaic inverter, and is used for collecting three-phase voltage, three-phase current, total power generation amount, total power generation time, current day power generation amount, current day power generation time, grid frequency, output active power, output reactive power and power factor of the photovoltaic equipment;
And the device is also used for collecting the internal temperature of the inverter, the temperature of the radiator of the inverter and fault alarm signals.
Compared with the prior art, the utility model has substantial characteristics and progress, and concretely comprises the following steps:
According to the utility model, through real-time monitoring of PCS, battery BMS, photovoltaic inverter, air conditioner, video, electric energy meter, fire-fighting equipment and the like, the voltage, current, power and other electrical parameters of the equipment can be monitored, all monitoring data can be uploaded, remote monitoring of basic operation information of micro-grid operation equipment is realized, an maintainer can acquire the operation state of the equipment in real time, remote fault early warning is realized, and the equipment is started or stopped in time according to the actual operation state. The utility model can enable the maintainer to find the problem at the first time, thereby maximally reducing accident risk and property loss, ensuring the stable and reliable operation of the micro-grid operation equipment, further realizing the intelligent aim of the power distribution network and meeting the 'less-attended' operation management mode of the micro-grid.
Drawings
Fig. 1 is a schematic diagram of the system architecture of the present utility model.
FIG. 2 is a schematic diagram of an acquisition circuit of the DI/DO switching module of the present utility model.
Detailed Description
In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.
As shown in fig. 1-2, the embodiment provides a micro-grid monitoring system, which comprises a monitoring host computer EMS, a display large screen, a local controller, a switch, a serial port server, a local display screen, a PCS data monitoring device, a battery BMS data monitoring device, a photovoltaic inverter data monitoring device, a video monitoring device, a DI/DO switching value module, an air conditioner data monitoring device, an electric energy meter, a grid-connected cabinet electric energy meter and a temperature and humidity transmitter, wherein the PCS data monitoring device, the battery BMS data monitoring device, the photovoltaic inverter data monitoring device, the video monitoring device, the DI/DO switching value module, the air conditioner data monitoring device, the electric energy meter, the grid-connected cabinet electric energy meter and the temperature and humidity transmitter are used for collecting real-time state information of the micro-grid monitoring system.
The PCS data monitoring device, the battery BMS data monitoring device, the photovoltaic inverter data monitoring device, the video monitoring device and the DI/DO switching value module are respectively connected to the switch through network cables;
The air conditioner data monitoring device, the electric energy meter, the grid-connected cabinet electric energy meter and the temperature and humidity transmitter are respectively connected to the serial port server through an RS485 communication line;
The switch and the serial port server are in communication connection with the local controller, and the local controller is used for collecting real-time state information of the micro-grid monitoring system;
The local display screen is connected with the local controller through an RS485 communication line;
The battery BMS data monitoring device is also in communication connection with the PCS data monitoring device;
The local controller is in communication connection with the monitoring host EMS network, and the monitoring host EMS is in communication connection with the display large screen.
In this embodiment, the monitoring host EMS may use a server device based on java technology, which has the advantages of large storage capacity, safety, reliability, and strong data processing.
Acquisition function
1) The DI/DO switching value module can upload the collected data to the local controller through Modbus TCP communication;
the intelligent monitoring system is used for collecting monitoring unit emergency stop button signals, grid-connected cabinet remote brake-separating indication signals, grid-connected cabinet remote brake-closing indication signals, container emergency stop button signals, container emergency door I signals, container emergency door II signals, container water immersion signals, gas extinguishing disc fault signals, fire control fire alarm signals, fire control spraying signals, combustible gas fault signals, combustible gas low-concentration alarm signals and combustible gas high-concentration alarm signals.
2) The temperature and humidity transmitter adopts a 485 type temperature and humidity transmitter, is connected with the inversion room temperature sensor and is used for acquiring the temperature and humidity of the inversion room, and the acquired data is uploaded to the local controller by adopting a Modbus-RTU communication protocol.
3) The battery BMS data monitoring device is used for collecting data of a communication mode RJ45, wherein a protocol format is Modbus-TCP communication protocol:
a) Stack voltage, stack current, stack SOC, stack SOH, operating temperature, stack real-time charge-discharge power, maximum cell voltage, minimum cell voltage, and maximum, minimum cell voltage and cell number thereof, maximum cell temperature, minimum cell temperature, and maximum, minimum cell temperature and cell number thereof, stack chargeable amount, stack dischargeable amount;
b) Current, voltage, power, battery energy, chargeable amount, accumulated charge-discharge amount, and highest and lowest cell voltages and battery numbers thereof of the battery cluster;
c) Fault alert and protection action signal.
4) The PCS data monitoring device is in a communication mode RJ45, has a protocol format of Modbus-TCP communication protocol and is used for collecting:
a) The switching value information comprises states of a direct current side contactor, an alternating current side contactor and a circuit breaker, grid-connected and off-grid operation modes, charging, discharging and standby operation states and states of an on-site operation handle;
b) Analog quantity information includes direct current side voltage, current and power, alternating current side three-phase voltage, current, active power and reactive power.
5) The air conditioner data monitoring device is in a communication mode RS485, has a protocol format of Modbus-RTU communication protocol and is used for collecting:
The operation state of the air conditioning unit, the starting temperature of the compressor, the stop and check difference value of the compressor, the starting temperature of the heater, the stop and check difference value of the heater, the high-temperature alarm temperature in the cabinet and the low-temperature alarm temperature in the cabinet.
6) The electric energy meter is in a communication mode RS485, and the protocol format is Modbus-RTU communication protocol, and is used for collecting photovoltaic ABC three-phase voltage, ABC three-phase current, ABC three-phase active power, total active electric energy and the like;
7) The grid-connected cabinet electric energy meter is provided with a communication mode RS485, and the protocol format is Modbus-RTU communication protocol, and is used for acquiring parameters such as three-phase voltage, three-phase current, power, frequency and the like of a real-time measurement bus;
8) The photovoltaic inverter data monitoring device is characterized in that the communication mode RS485 is adopted, the protocol format is Modbus-RTU communication protocol, and the photovoltaic inverter data monitoring device is used for collecting:
a) The photovoltaic equipment three-phase voltage, three-phase current, total power generation amount, total power generation time, current day power generation amount, current day power generation time, grid frequency, output active power, output reactive power and power factor;
b) Inverter internal temperature, inverter radiator temperature, and fault alert signal.
9) The video monitoring device is in a communication mode RS485, has a protocol format of Modbus-RTU communication protocol, and is used for collecting videos of the running environment states in the battery compartment and the energy storage inversion room, supporting Internet service and realizing remote video viewing.
Display function
The large display screen is arranged in the remote monitoring center, and displays the working state parameters and real-time alarm information of the connected equipment uploaded by the local controller, the operating buttons such as startup and shutdown, power scheduling, off-grid connection, contactor opening and closing, and the records such as history alarm.
The local display screen is placed in the micro-grid, displays working state parameters and real-time alarm information of connected equipment, displays operation buttons such as on-off, power scheduling, off-grid, contactor opening and closing and the like, and displays records such as history alarm and the like.
Communication function:
All the collected data, alarm information and operation (result) data are reported to the monitoring host EMS in real time under the networking state of the monitoring host EMS. In other embodiments, in the remote control mode, the connected device may also accept control commands from the monitoring host EMS.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (7)
1. A microgrid monitoring system, comprising:
The monitoring system comprises a monitoring host EMS, a display large screen, a local controller, a switch, a serial port server, a local display screen, a PCS data monitoring device, a battery BMS data monitoring device, a photovoltaic inverter data monitoring device, a video monitoring device, a DI/DO switching value module, an air conditioner data monitoring device, an electric energy meter, a grid-connected cabinet electric energy meter and a temperature and humidity transmitter;
The PCS data monitoring device, the battery BMS data monitoring device, the photovoltaic inverter data monitoring device, the video monitoring device and the DI/DO switching value module are respectively connected to the switch through network cables;
The air conditioner data monitoring device, the electric energy meter, the grid-connected cabinet electric energy meter and the temperature and humidity transmitter are respectively connected to the serial port server through an RS485 communication line;
The switch and the serial port server are in communication connection with the local controller, and the local controller is used for collecting real-time state information of the micro-grid monitoring system;
The local display screen is connected with the local controller through an RS485 communication line;
The battery BMS data monitoring device is also in communication connection with the PCS data monitoring device;
The local controller is in communication connection with the monitoring host EMS network, and the monitoring host EMS is in communication connection with the display large screen.
2. The microgrid monitoring system according to claim 1, wherein:
The DI/DO switching value module is respectively connected with switching value input ports of a monitoring unit emergency stop button signal, a grid-connected cabinet remote switching indication signal, a container emergency stop button signal, a container emergency door I signal, a container emergency door II signal, a container water immersion signal, a gas extinguishing disc fault signal, a fire control alarm signal, a fire control spraying signal, a combustible gas fault signal, a combustible gas low concentration alarm signal and a combustible gas high concentration alarm signal.
3. The microgrid monitoring system according to claim 1, wherein:
And the temperature and humidity transmitter is connected with the inversion room temperature sensor and is used for collecting the temperature and humidity of the inversion room.
4. The microgrid monitoring system according to claim 1, wherein:
The battery BMS data monitoring device is connected with the battery stack and the battery cluster and is used for collecting battery stack voltage, battery stack current, battery stack SOC, battery stack SOH, operating temperature, battery stack real-time charge and discharge power, highest battery voltage, lowest battery voltage, highest and lowest cell voltages and battery numbers thereof, highest battery temperature, lowest battery temperature, highest and lowest cell temperatures and battery numbers thereof, chargeable amount of the battery and dischargeable amount of the battery;
the system is also used for collecting current, voltage, power, battery energy, chargeable quantity, accumulated charge and discharge quantity, highest and lowest single voltage and battery number of the battery cluster;
and is also used for collecting fault alarm and protection action signals.
5. The microgrid monitoring system according to claim 1, wherein:
The PCS data monitoring device is connected with the switching value and analog quantity input port of the PCS and used for collecting switching value information and analog quantity information, wherein,
The switching value information comprises states of a direct current side contactor, an alternating current side contactor and a breaker, grid-connected and off-grid operation modes, charging, discharging and standby operation states and states of an on-site operation handle;
the analog quantity information comprises direct-current side voltage, current and power, and alternating-current side three-phase voltage, current, active power and reactive power.
6. The microgrid monitoring system according to claim 1, wherein:
the air conditioning data monitoring device is used for collecting the running state of an air conditioning unit, the starting temperature of a compressor, the stop and check difference value of the compressor, the starting temperature of a heater, the stop and check difference value of the heater, the high-temperature alarm temperature in the cabinet and the low-temperature alarm temperature in the cabinet.
7. The microgrid monitoring system according to claim 1, wherein:
The photovoltaic inverter data monitoring device is connected with a switching value and an analog quantity input port of the photovoltaic inverter and is used for collecting three-phase voltage, three-phase current, total power generation capacity, total power generation time, current day power generation capacity, current day power generation time, power grid frequency, output active power, output reactive power and power factor of the photovoltaic equipment;
And the device is also used for collecting the internal temperature of the inverter, the temperature of the radiator of the inverter and fault alarm signals.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202323646313.8U CN222262247U (en) | 2023-12-29 | 2023-12-29 | A microgrid monitoring system |
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| CN202323646313.8U CN222262247U (en) | 2023-12-29 | 2023-12-29 | A microgrid monitoring system |
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| CN222262247U true CN222262247U (en) | 2024-12-27 |
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Effective date of registration: 20250417 Address after: 450001 No.188, science Avenue, high tech Industrial Development Zone, Zhengzhou City, Henan Province Patentee after: HENAN SPLENDOR SCIENCE & TECHNOLOGY Co.,Ltd. Country or region after: China Patentee after: HENAN HUIHUANG XINTONG SOFTWARE CO.,LTD. Address before: 450001 No.188, science Avenue, high tech Industrial Development Zone, Zhengzhou City, Henan Province Patentee before: HENAN SPLENDOR SCIENCE & TECHNOLOGY Co.,Ltd. Country or region before: China |