The National Electric Power Regulatory Authority (Nepra) has pointed out that K-Electric’s performance has improved in fiscal year 2019-20 compared to the preceding year as the reliability and quality of supply indicators have shown considerable boost.
It further said that significant improvement has also been seen in performance of the National Transmission and Despatch Company (NTDC) in reliability and security indicators during the previous year.
However, voltage violations and low voltage profile is still a question mark and the NTDC needs to improve its functions of planning, operation, protection, augmentation and expansions and rehabilitation to overcome these issues.
The regulator’s assessments were made in the ‘2019-20 Performance Evaluation Report on NTDC and K-Electric’.
While analysing K-Electric, Nepra said that system duration of interruption was witnessed on average around 0.12 hours (seven minutes), which shows a decrease of 80% as compared to preceding year’s average of 0.61 hours (37 minutes).
System duration of interruption is a reliability indicator that measures the average outage duration that an interconnection point observes in a year.
In order to gauge system security, the estimates of total energy not served (ENS) during the year as reported by the licensee has been analysed. The total ENS as reported by K-Electric is 0.701 million kWh, 74% lesser than the previous year’s 2.678 million kWh. Based on the average energy sale rate of K-Electric the financial impact amounts to around Rs6.7 million.
K-Electric reported three incidents of loss of supply during the year 2019-20, which translates into total duration of 0.95 hours. The average ENS per incident along with duration and subsequent financial impact has been assessed.
With reference to the performance of NTDC, the system duration of interruption was witnessed around 0.13 hours (eight minutes) on average that indicates a decrease of 59% as compared to preceding year’s average of 0.32 hours (19 minutes).
System frequency of interruption is a reliability parameter that measures the average number of outages per circuit in a year. During 2019-20 the average number of outages per circuit for NTDC turned out to be 0.12, showing a decrease of 8% over the previous year’s 0.13.