Nov 21, 2020
Photovoltaic power station monitoring system: solve the shortcomings of photovoltaic monitoring in management and monitoring
1. IoT demand for photovoltaic power plants
The core indicators of photovoltaic power plants are power generation and power generation efficiency. Insufficient power generation will impair the user’s income accordingly. Generally, the low power generation of photovoltaic power plants is mainly due to the following reasons:
1. The photovoltaic module is blocked (object blocked, dust blocked);
2. The wiring method of the power station (different wiring methods have an impact on power generation);
3. The orientation and inclination angle of the power station;
4. Equipment failure (inverter failure and other equipment failure).
It can be seen that the objective factors of photovoltaic power generation have a lot of influence, so it is particularly important to monitor the power generation and equipment status of the power station in real time, and to find abnormal electricity data in time.
The photovoltaic power plant monitoring system developed based on the ZWS cloud platform is a set of software and hardware solutions that can help users solve problems such as failure to discover power plant abnormalities in time and failure to obtain power plant operation status. It has the following functions:
1. Support real-time statistics of power generation and income of power stations, which greatly reduces operation and maintenance costs;
2. It can dynamically monitor equipment failures, notify users as soon as possible, and reduce equipment failure response time;
3. Support data display of multiple power stations and remote viewing of power station status.
2. Working principle of photovoltaic power station
Photovoltaic power generation is a way of generating electricity that converts solar energy into electrical energy.
The photovoltaic power generation system is mainly composed of three parts: photovoltaic components, inverters, and AC power distribution cabinets. Among them, the electricity generated by photovoltaic components is direct current, and the inverter is a device that converts direct current to alternating current. It can be used by users themselves or connected to the national grid.
Third, the overall design of the photovoltaic monitoring system program
The photovoltaic power plant monitoring system solution includes two parts: communication hardware and application software
Four, communication hardware
The communication hardware of the photovoltaic power station monitoring system solution uses the photovoltaic inverter collector WM6232/WM2232 module. The collector records the working status and power generation of the inverter, and transmits the data to the cloud through Wi-Fi/GPRS.
It supports standard communication modes such as transparent transmission, provides a wealth of software functional interfaces, and can quickly define personalized functions such as inverter interaction protocols according to requirements.
Five, application platform
The photovoltaic power station monitoring platform is an industry application developed based on the ZWS cloud platform, which specifically solves the shortcomings of photovoltaic monitoring in management and monitoring. The system platform functions include:
1. Power station monitoring
It can monitor the inverter's power generation, input and output voltage, input and output current and other data, which can help users determine the reasons for the availability and performance degradation of the power station.
2. Data analysis
The system will count various data, and users can query the cumulative status of daily, monthly, and annual power generation, and predict future power generation and revenue.
3. Failure operation and maintenance
Realize the alarm notification of photovoltaic equipment, remotely receive equipment alarm messages, and deal with faults in time. You can also count the number of alarms and alarm content, analyze and prevent equipment failures in advance.
In addition to logging into the photovoltaic power station monitoring platform on the PC side, you can also download the photovoltaic monitoring app, and you can view the operating data of the power station on the mobile phone client, and remotely monitor the power station in real time.