What Is A Primary And Secondary Fusion Into A Ring Main Unit

What is a primary and secondary fusion into a ring main unit

The primary and secondary fusion into a ring cage integrates the primary main equipment (ring cage), high-precision sensors, and secondary terminal equipment, achieving the goals of "reliability, miniaturization, platformization, universality, and economy". By effectively integrating primary and secondary equipment, on the basis of traditional functions such as measurement, acquisition, protection, and control; Efforts have been made to address issues such as interface mismatch between primary and secondary devices, device compatibility, scalability, and poor interchangeability; Avoiding manufacturer liability disputes caused by unclear primary and secondary responsibilities for users.

The first and second fusion into a ring network box consists of an integrated equipment consisting of C unit+V unit+busbar PT+centralized DTU and its outer box+aerial plug+cable. Among them, the power supply, current, remote signaling, and remote control circuits of the loop in and loop out units, feeder units, busbar equipment (PT) units, and centralized DTUs are designed with standardized interfaces. They are summarized to the DTU unit aviation plug room through secondary aviation plugs, and the power supply, voltage, and other circuits of the busbar equipment are summarized to the DTU unit aviation plug room through secondary aviation plugs, The core control unit hardware adopts high-performance DSP processors to ensure the accuracy and stability of the system; Strong processing power, with parallel data collection and processing.

In order to ensure more secure electricity usage and management, the device supports both software encryption and hardware encryption functions, meeting the requirements of State Grid information security detection. It supports line loss collection, and communicates with the distribution line loss collection module through a serial port to collect measurement data, and uploads the data.

The primary and secondary fusion ring network box is equipped with an independent line loss collection module, which uses military grade aviation connectors. The interface definition and structure are unified, with good compatibility and interchangeability. In terms of transformers, the complete set of voltage and current collection adopts electromagnetic transformers, integrating all protection functions into the control unit. Each interval can achieve separate or centralized protection, and also has the function of handling phase to phase and ground faults. It is precisely based on the high integration of primary and secondary, that the entire equipment is assembled as a whole in the complete set factory. On the construction site, only one installation is required, without the need for secondary wiring, greatly improving the standardization and reliability of the ring network box.

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