NORTHERN REGIONAL LOAD DISPATCH CENTRE Vs. PUNJAB STATE ELECTRICITY BOARD, PATIALA MEMBER-SECRETARY, NORTHERN REGIONAL POWER COMMITTEE, NEW DELHI

JUDGEMENT

(1.) PETITION No. 129/2010 was filed by Northern Regional Load Dispatch Centre (NRLDC) seeking the following reliefs:

(2.) ACCORDING to the petitioner, the frequency profile of the NEW grid had undergone sharp deterioration since the start of the month of April 2010 and the percentage of time during which frequency remained below 49.2 Hz reached up to 80 % on 9.4.2010. The petitioner submitted that the primary reason for the sustained low frequency was overdrawals by the State Control Areas/Regional Entities in Northern Region. As per the details submitted by the petitioner, during 1st to 9th April 2010 all the State Control Areas with the exception of Delhi, were heavily overdrawing from the grid. Based on SCADA data, it was urged that the maximum overdrawal by Punjab State control area during 1st to 9th April 2010 was up to 1190 MW when frequency was below 49.2 Hz. (during the subject time period the stipulated frequency range as per IEGC was 49.2 -50.3 Hz.) and average overdrawal was 12.6 MU per day.

(3.) AS regards the respondent in the present Adjudication proceedings, it was submitted that during 1st to 9th April, 2010 at least 40 numbers of "Caution messages" (Message type A) and 31 numbers of "Violation messages" (19 numbers type "B" Message and 12 numbers type "C" Messages) were issued to the Punjab State Electricity Board.