Package Substation Intelligent Monitoring Device

The SMR-228F(G/T) intelligent monitoring device for photovoltaic (PV) transformer substations features analog signal acquisition, non-electrical quantity protection, remote control, and communication functions on the low-voltage side of the PV transformer substation or the high- and low-voltage sides of the wind farm transformer substation. This device also integrates a communication management unit and fiber optic switch to handle data communication with inverters and intelligent combiner boxes within the power generation unit. This centralized transmission of communication information from intelligent devices within the PV power generation system, and access to the substation's integrated automation system via a self-healing ring fiber optic Ethernet, enables remote management and automated monitoring of the PV power generation unit or wind farm from the substation. This meets the requirements for fully intelligent, "unmanned, minimally staffed" operation management of PV power plants and wind farms.

1) The reinforced unit enclosure is designed to withstand strong vibrations and interference, making it particularly suitable for harsh environments and operating in a wide temperature range of -40℃ to 70℃.
2) All integrated circuits in the device are industrial or military grade, ensuring high stability and reliability. It meets the requirements for closed-loop operation of PV farms.
3) The device collects three-phase current, three-phase voltage, frequency, power factor, active power, and reactive power from both sides of the low-voltage side of the transformer for remote measurement within the integrated automation system.
4) The device is equipped with electrical quantity-based protection functions, including three-stage current protection with composite voltage interlocking, zero-sequence current protection, overvoltage protection, undervoltage protection, CT disconnection protection, and PT disconnection protection.
5) All protection functions are configured with control words, allowing for convenient activation/deactivation via password input on an LCD screen.
6) The device features two-channel temperature and two-channel electrical quantity (0-5V DC voltage or 4-20mA current) acquisition capabilities. It can be used to collect relevant temperatures of the transformer substation and includes an over-temperature alarm function for convenient monitoring of the photovoltaic power plant integrated automation system.
7) The device has six output switches for easy expansion of the transformer substation's control functions. Remote control of switches with electrical operation capabilities is possible.
8) The device uses a graphic LCD screen with a full Chinese display and menu-driven human-machine interface. It can display various operating statuses and data in real time, providing detailed and intuitive information, and facilitating operation and debugging.
9) Large-capacity information recording: It can save 16 recent historical reports, and can include action parameters, which are retained even after power failure.
10) The device structure is designed according to the requirements of a prefabricated substation switchgear, with a small size, simple installation method, and convenient wiring.

The company provides a 24-hour online consultation hotline, answering customer questions about product performance, functions, and pricing through telephone, email, and online customer service. We also offer customized solutions based on customer needs and provide remote diagnostics, guidance, and maintenance services for faulty products.

We promise our users: to adapt to the market with high-quality products, to meet needs quickly, and to satisfy customers with attentive service.