1. On-site performance
Typical symptoms on site
- It is often said at the site that the circuit breaker tripped again, the temperature increased again, and the machine shut down again, but no one can tell clearly what load, at what time and after what operation it happened.
- After each failure, the system is reset, restarted, and continues production. A few days later, the same alarm or trip occurs again.
- External engineers can only make a rough diagnosis from phone calls, photos, and site descriptions if they cannot see operating hours, load curves, alarm sequences, and switching records.
- During shift handover, teams often only say whether the generator set can still run, with few records of fuel consumption, load, temperature, alarms, or maintenance actions.
2. Risk causes
Root cause in the power-system design
Without records, it is difficult to distinguish whether the problem is caused by generator capacity, load starting, distribution protection, ambient temperature, fuel quality, or maintenance delays. The crew could only be rescued at the scene, but the cause was not left behind.
Operating hours, load, alarms, fault time points, switching actions and maintenance records are clues to determine repeated faults. Without this information, the next downtime will result in a new guess.
Remote monitoring is not about building a complex platform; it lets the mine site and outside engineers work from the same facts. Without basic data, remote support has to rely only on experience, which slows response and reduces accuracy.
3. Scope of influence
Production, fuel, maintenance, safety and environmental risks all grow
- The same fault occurs repeatedly, and maintenance personnel have to troubleshoot it from the beginning every time. Downtime and communication costs continue to increase.
- The real cause can be hidden, so the site may keep replacing the wrong parts, adjusting the wrong protections, or assuming the generator capacity is insufficient.
- Without fuel consumption and load records, it is difficult to detect low-load operation, abnormal fuel consumption, overloading and maintenance delays in the mine site.
- Management cannot see the shutdown mode and can only wait for on-site repairs. It cannot arrange spare parts, maintenance and load adjustment in advance.
4. How to avoid before construction
What to confirm before procurement or expansion
- Record operating hours, load, voltage, frequency, fuel consumption, temperature, alarms, downtime and recovery actions from the start of production.
- Leave a simple record of each trip, high temperature, startup failure and manual switching, focusing on the time, load, on-site operation and recovery method.
- If the mine site has long-term self-generated power or is located in a remote location, priority should be given to configuring basic remote monitoring so that engineers can see key operating data and alarm information.
- Regularly review records and classify repeated faults into load, power distribution, environment, maintenance, fuel or operation problems to avoid temporary recovery each time.
5. On-site confirmation information
Site information needed for an engineering review
- Existing unit controller model, whether it supports communication, and whether it has remote monitoring or local recording functions.
- Time records or team handover records of past tripping, high temperature, shutdown, manual switching and maintenance processing.
- Daily operating hours, main load changes, fuel consumption records, maintenance records and alarm photos.
- On-site network conditions, on-duty methods, whether multiple units need to be viewed uniformly, and external service support methods.
