BackgroundPower system failure is always followed by equipment loss and production loss due to unexpected outage, even causing irreparable accident to employees. Fault investigation not just reveal the true causes of failure, and is beneficial to prevent similar incidents from happening, and further to improve the power system for a safer environment.
This is a procedure description, not a case study
Information collectionThrough collecting the data of failed equipment and other related information, the failure causes could be disclosed.
Figure 1. Specification of failed equipment
Figure 2. Single line diagram of failed location
Figure 3. Voltage/current waveform of failed equipment
Figure 4. Other related information
Failure conditionPictures of the accident scene and failure equipment dissection are most useful information for failure investigation.
● Picture of failure
● Picture of dissection
Figure 5. Picture of failure
Figure 6. Picture of dissection
Figure 7. Picture of dissection
Fault analysisFault analysis and simulation are used to reveal the actual situation, with the aid of equipment information and dissection result, the failure process and causes could be logically disclosed through step-by-step analysis.
● Information analysis
● Fault simulation
● Analysis description
Figure 8. Fault Information
Figure 9. Fault simulation
Figure 10. Analysis description