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The rapid development of smart grids puts forward new requirements for the automation, remote control and operation efficiency of distribution equipment. Traditional ring network switchgear (RMU) mainly relies on manual operation and on-site inspection, which is no longer suitable for the development pace of modern power grids. Intelligent upgrading of traditional ring network cabinets has become a necessary choice to improve the efficiency and safety control level of power grid operation. This article analyzes the existing defects of traditional ring network cabinets, the core value of intelligent transformation, and introduces a complete intelligent upgrading scheme, applicable scenarios, and comprehensive comparison, combined with Chuanli‘s CLH-12 / 24 environmental protection gas-insulated ring network cabinet.
The traditional ring network switchgear adopts all on-site manual opening and closing operations, and the frequent manual operation is inefficient. At the same time, manual operation in high-voltage areas is prone to misoperation and electric shock accidents, and the personal safety of operators is difficult to fully guarantee.
The traditional ring network cabinet does not have a data acquisition and transmission unit, and the management personnel cannot grasp the key data, such as equipment pressure, temperature, local discharge, and switch status, in real time. Gas leakage, insulation aging and other hidden dangers can only be discovered by regular inspection, which can very easily cause a sudden power outage accident.
Modern smart grids are characterized by unmanned operation, data interconnection, and remote dispatching. The traditional ring network cabinet does not have the ability of communication and coordination, and cannot be connected to the power grid management platform, forming a data island, which restricts the promotion of the intelligent construction of the power grid.
After professional intelligent upgrading, the ring network cabinet is equipped with a high-precision sensor acquisition unit and an industrial-grade communication module, which realizes 24-hour uninterrupted remote monitoring. Operation and maintenance personnel can view equipment operation data, historical curves and equipment status in real time through the cloud platform and local terminal, completely get rid of the limitations of manual on-site inspection, and realize the digital supervision of power distribution equipment.
The intelligent system has the ability to perform real-time data analysis, abnormal judgment, and automatic early warning. When the equipment has faults such as overheating, gas leakage, and local discharge anomalies, it can instantly start the protection logic, automatically isolate the fault section, and lock the fault point. It greatly shortens the response cycle of traditional manual inspection and emergency repair, prevents the expansion of accidents, and comprehensively improves the essential safety level of power distribution operation.
The intelligent ring network cabinet realizes the unmanned inspection of daily inspection and the extremely simplified on-site operation and maintenance, which greatly reduces the manpower input, vehicle scheduling and inspection time cost. At the same time, relying on data prediction to achieve predictive maintenance, avoiding meaningless periodic over-maintenance and blind replacement of accessories, effectively reduces the operational expenditure of power grid equipment throughout its life cycle.
The upgraded intelligent ring network cabinet is compatible with a variety of mainstream industrial communication protocols, can seamlessly connect with the smart grid big data platform, realize data sharing, remote dispatching, equipment linkage and power grid situation analysis, and help the distribution system complete digital upgrading, green and low-carbon transformation and intelligent management iteration.
Chuanli CLH-12/ 24 series environmental protection gas-insulated ring network cabinet is a new generation of green and low-carbon distribution equipment, using clean nitrogen insulation, abandoning the traditional SF6 greenhouse gas medium, green and environmentally friendly. The full-sealed stainless steel gas chamber has a protection grade of IP67, with a leakage rate of ≤0.01% per year. It is dustproof, waterproof, corrosion-resistant and aging-resistant. The equipment is equipped with vacuum arc extinguishing technology and a complete set of mechanical five-lock interlocking structure. The electrical performance is stable, the environmental adaptability is strong, adopts a standardized modular compact layout, reserves sufficient intelligent interface and installation space, provides excellent hardware carrier for later intelligent upgrade, and adapts to the intelligent transformation needs of various complex indoor and outdoor situations.
In response to the pain points of traditional equipment operation and maintenance, Chuanli supports customized intelligent module integration of the CLH-12/24 ring network cabinet, which can be equipped with a high-precision air pressure monitoring sensor, a real-time temperature detection module, an online local discharge monitoring device, a switch state feedback unit, an electric energy collection module and other intelligent components. All modules are miniaturized designs, highly compatible with the original structure of the cabinet, and do not change the overall mechanical structure and sealing performance of the equipment, so as to realize the comprehensive and accurate perception of the operation state of the equipment.
After the equipment upgrade, it is equipped with a dedicated integrated remote control system, supports 4G / 5G wireless transmission and Ethernet wired dual communication mode, and can realize remote opening and closing, parameter adjustment, abnormal alarm, event record query, and full process data tracing. The system can connect with various mainstream smart grid management platforms to realize unified remote dispatching, centralized monitoring and intelligent early warning for regional distribution network equipment.
The upgraded CLH-12/ 24 intelligent gas-insulated ring network cabinet combines the advantages of safety, environmental protection, intelligence and maintenance-free, and is suitable for high-standard, high-precision power supply scenarios:
Comparison between the traditional ring network cabinet and the intelligent ring network cabinet：
| Comparison Item | Traditional Ring Main Unit (RMU) | CLH-12/24 Upgraded Smart RMU |
| Operation Mode | Purely manual on-site operation; low efficiency | Remote automatic control + local manual backup |
| Monitoring Capability | No real-time monitoring; relies on periodic manual inspections | 24-hour comprehensive remote monitoring |
| Fault Handling | Reactive repair after failure; delayed response | Proactive early warning + automatic fault isolation |
| O&M Costs | High labor and time costs | Unmanned O&M significantly reduced overall costs |
| Smart Grid Compatibility | No data interoperability; cannot connect to platforms | Seamless integration with smart grid systems |
With the deepening of the construction of smart grids, the traditional shortcomings of high dependence on manual operation, blind monitoring, and poor intelligent coordination have become the key bottlenecks restricting the high-quality development of modern distribution grids. The scientific and intelligent upgrade of ring network cabinets is not only the technical iteration of power equipment, but also the inevitable requirement for the safe, efficient and low-carbon operation of the power system. Relying on the excellent sealing performance, stable mechanical and electrical performance, and modular expansion ability of the Chuanli CLH-12/ 24 environmental protection gas-insulated ring network cabinet, the intelligent transformation completely solves the various running pain points of traditional equipment. The digital monitoring, remote intelligent control, and rapid fault handling of the equipment life cycle are realized, which greatly improve the safety, stability, and economy of power distribution operation, and continuously provide reliable intelligent equipment support for global power grid transformation, new energy grid connection, and smart energy construction.
Q1: What is the biggest disadvantage of the traditional ring network cabinet?
A1: The efficiency of manual operation is low, there is no real-time monitoring function, and the fault handling is delayed.
Q2: What are the main new core functions of the intelligent upgrade?
A2: Remote monitoring, remote operation, intelligent warning, and automatic fault isolation.
Q3: Is CLH-12 / 24 suitable for intelligent transformation?
A3: It has strong adaptability and a modular structure that can perfectly accommodate various intelligent components.
Q4: Can the smart ring network cabinet connect to the smart grid?
A4: Yes, it supports data interconnection and network interconnection management.
Q5: What are the main advantages of upgrading the equipment?
A5: Higher security, lower operation and maintenance costs, and faster fault response.
