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Traditionally, the equipment in medium-voltage distribution networks operates in a disconnected manner, where the primary main switchgear and the secondary monitoring system work independently without any interconnection. This fragmented operation mode makes real-time data exchange impossible, and the operation and maintenance of on-site equipment almost entirely rely on manual patrol inspections and on-site operations.
Nowadays, urban power grids are all upgrading toward unmanned operation and higher safety standards. This outdated mode with mutually independent primary and secondary equipment has severely slowed down the intelligent transformation progress of power grids.
Fortunately, the primary-secondary integrated integration technology perfectly solves this long-standing industry challenge. By installing IoT sensors and remote control modules on traditional switchgear, operation and maintenance personnel can monitor equipment status in real time and remotely dispatch equipment operations. This comprehensive upgrade solution greatly enhances the application flexibility of RMU Circuit Breaker, and also lays a solid and reliable foundation for the full digital transformation of modern distribution networks.
Distribution equipment with different voltage specifications encounters distinct problems in actual operation. The intelligent transformation of equipment cannot adopt a one-size-fits-all template, and must be tailored to the real on-site working conditions to solve pain points in a targeted manner.
12kV RMU Circuit Breaker are mostly deployed in residential communities, commercial complexes and urban branch power grids, featuring compact size and extremely frequent daily start-stop switching operations. However, traditional equipment generally does not have the automatic data collection function, making it impossible to view the operating status in real time.
Daily operation and maintenance almost entirely depend on manual patrol inspections and registration. Minor mechanical wear, abnormal temperature and hidden insulation hazards of equipment are very difficult to detect in advance. Once an unexpected failure occurs, maintenance personnel must arrive at the site to troubleshoot and handle the problem, which not only delays the power restoration speed, but also directly affects the power supply stability of the entire area.
24kV RMU Circuit Breaker are mainly used in heavy industry power transmission scenarios, with larger load capacity and harsher operating environments. The equipment is constantly faced with strong electromagnetic interference and frequent load fluctuations, bringing great pressure to its stable operation.
Without remote intelligent monitoring means, staff cannot accurately judge the actual working condition of the equipment during peak power consumption periods. Long-term overloaded operation of the equipment will accelerate the aging of mechanical components and the failure of sealing parts. Over time, this will leave a large number of hidden safety hazards for the entire medium-voltage distribution system.
With the help of high-precision IoT sensing technology, we can build a stable two-way data channel between on-site switchgear and the cloud management platform. The traditional, hard-to-monitor switchgear can now realize full-process digital and visual monitoring, with its operating status clearly visible at a glance.
A complete and sophisticated intelligent sensing system is capable of comprehensively monitoring all operating statuses of the Secondary Smart RMU Circuit Breaker. Key data including equipment operating temperature, switch opening and closing stroke, vibration amplitude, loop current, and insulation performance will be continuously and automatically collected.
With these abundant and accurate data, the monitoring blind spots in traditional operation and maintenance are completely eliminated. Staff no longer need to subjectively judge the equipment condition based on experience, and can scientifically assess the equipment status and predict faults in advance simply by referring to the long-term accumulated data change trends.
In the primary-secondary integrated retrofit, the installation of sensors follows strict standardized requirements, which mainly adhere to two core principles: do not damage the original sealing structure of the equipment, and achieve full coverage of core operating components.
The rationality of the sensor layout directly determines the accuracy of the monitoring data, and is also closely related to the operational safety of the entire switchgear.
| Installation Position | Sensor Type | Monitoring Purpose |
| Conductive loop | Temperature & current sensor | Track real-time load fluctuation |
| Mechanical transmission structure | Vibration & stroke sensor | Record switching action status |
| Internal cabinet space | Insulation monitoring sensor | Capture abnormal environmental changes |
Data acquisition is only the foundation of equipment intelligence. The realization of truly unattended on-site operation relies on stable and reliable remote control functions. The perfect combination of high-quality wireless communication and precise command execution capability also represents the greatest advantage of smart grid upgrading.
Outdoor power distribution cabinet sites are large in number, scattered in distribution, with high wiring construction costs and are subject to site constraints. The cellular IoT wireless communication can perfectly adapt to various complex outdoor working conditions.
This networking method features strong anti-interference capability and flexible networking. No matter what the weather and environment are like, it can stably transmit equipment data and synchronize the online status of equipment, ensuring that the RMU circuit breaker is always online and controllable.
The entire system supports all kinds of conventional remote operations, such as remote opening and closing, fault reset, and real-time query of equipment status. Meanwhile, the system is equipped with multiple layers of security protection, which fundamentally avoids misoperation through password verification and hierarchical permission management.
For unattended substations and remote distribution stations, technical personnel can complete daily equipment scheduling and emergency fault handling without going to the site, greatly improving the overall response efficiency of the medium-voltage distribution network.
To ensure the long-term and stable operation of the intelligent monitoring system, it is necessary to guarantee the security of data transmission and the standardization of cloud platform deployment. Relying on mature cloud management, complete full-lifecycle management can be realized for a large number of power grid equipment.
The electromagnetic environment at the medium-voltage distribution site is complex, which is very prone to signal interference, and puts extremely high requirements on the stability and security of data transmission. The entire system adopts an encrypted transmission protocol, which can not only resist external signal interference, but also prevent data from being tampered with.
All uploaded monitoring data and remote control commands will go through multi-layer verification, completely avoiding operational risks caused by abnormal signals and ensuring the safe and stable operation of on-site switch equipment.
The cloud platform integrates multiple functions such as data statistics, fault early warning, operation logs, and maintenance reminders, completely transforming the traditional passive maintenance mode of “repair after breakdown” into a proactive maintenance mode with advance prediction.
Relying on big data trend analysis, operation and maintenance personnel can accurately grasp the aging status of each RMU Circuit Breaker, formulate exclusive maintenance plans as needed, and minimize unexpected faults and unplanned power outages.
After the completion of hardware installation and network configuration, systematic commissioning must be carried out to verify the accuracy of the entire system. On-site engineers will simulate real load fluctuations and frequent switching operations to calibrate the sensor accuracy and test the response sensitivity of remote commands at the same time.
After the equipment is put into operation, please check regularly whether the signal is stable, whether the sensors are clean, and whether the data is synchronized normally, so as to ensure the continuous and stable operation of intelligent functions. Standardized operation and maintenance habits can also effectively extend the service life of the intelligent upgrading module.
Is it possible to upgrade traditional switchgear to devices with secondary intelligent monitoring functions?
Absolutely! The vast majority of conventional medium-voltage switchgear available on the market supports non-destructive intelligent retrofitting, with no need to replace the entire cabinet. This brings far lower renovation costs and much broader applicability. XINGJI has mature, proven upgrade solutions that can transform ordinary old equipment into fully functional Secondary Smart RMU Circuit Breaker, making it an extremely cost-effective choice for smart grid transformation projects.
What are the core differences between 12kV and 24kV intelligent power distribution equipment?
The two types of equipment are designed for completely different application scenarios, with distinct priorities in retrofitting. 12kV equipment is mainly used in urban civilian power distribution scenarios, where the core requirement is stable and frequent switching operations. In contrast, 24kV equipment is mostly deployed in industrial power supply scenarios, with retrofitting efforts focused on high-load operation safety monitoring and anti-interference communication optimization for complex operating environments.
Is it sufficiently safe to operate medium-voltage power distribution equipment via remote technology?
It fully complies with all grid safety standards. The entire system is equipped with multi-layer permission verification and encrypted data transmission protection. Compared with traditional on-site manual operations, remote control features more standardized processes, stronger controllability and higher dispatching efficiency, which can effectively avoid risks caused by human operational errors.
Leveraging the three core technologies of IoT sensing, cellular wireless communication and cloud-based remote control, the master-slave equipment integration solution completely subverts the old traditional management mode of passive inspection and breakdown maintenance for power grids.
This intelligent upgrade solution greatly improves the operational safety and intelligence level of 12kV RMU Circuit Breaker and 24kV RMU Circuit Breaker, and solves long-standing pain points in the industry such as blind spots in equipment monitoring, heavy manual operation and maintenance workload, and delayed fault response.
Through real-time data collection, encrypted cloud transmission and precise remote dispatching, it can help modern power distribution networks realize unattended operation and predictive active maintenance. If you are looking for a professional, reliable master-slave integrated intelligent upgrade solution for medium-voltage switchgear for your project, XINGJI is your ideal choice. Please feel free to reach out to our expert team at any time to get customized technical solutions tailored to your smart grid project and one-stop full-process implementation guidance.
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