• The backing down of wind and solar generation is done after giving instructions to all thermal generators for backing down upto technical limits.
  • The following are relavent regulatory clauses for backing down.
  • Compendium of CERC(DSM Regulations) clause 7.1 The over drawl/Under drawl by any buyer shall not exceed 250MWfor renewable rich state.
  • compendium of CERC(IEGC) Regulations clause 5.4.2(a) SLDC/SEB/Discom shall intiate action to restrict the drawl of its control area, from the Grid within the drawl schedule.
  • compendium of CERC(IEGC) Regulations clause 5.2.(m) all SEBs,SLDCs,RLDCs and NLDC shall take all possible measures to ensure that Grid frequency remains with in (49.90Hz-50.05Hz) the band.

Following are the instructions issued from SLDC for curtailment of wind generation with written justification

 
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DateBlock NoTimeSolar cutailment MWTotal Solar CurtailmentSolar generation MWReasons for Backing down
04-02-20204110:00:001001001736Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
04-02-20204110:19:002003001683Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
04-02-20204410:47:001004001596Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
04-02-20204410:50:001501501594Curtailed to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
04-02-20204511:02:0050501379Curtailed to maintain grid security as per IEGC regulation (At distributed Solar in percentage )
04-02-20204611:17:001002501365Curtailed to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
04-02-20204912:15:00-1501001233Released to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
04-02-20205413:22:001002001400Curtailed to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
04-02-20205513:55:001001001287Curtailed to maintain grid security as per IEGC regulation (At Mylavaram SS)
04-02-20206115:05:00-10001165Released to maintain grid security as per IEGC regulation (At Mylavaram SS)
04-02-20206516:11:00-20001094Released to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
04-02-20206516:11:00-1003001094Released to maintain grid security as per IEGC regulation (At Ghani SS)
04-02-20206616:16:00-30001061Released to maintain grid security as per IEGC regulation (At Ghani SS)
04-02-20206616:20:00-5001032Released to maintain grid security as per IEGC regulation (At distributed Solar in percentage )
05-02-20204110:05:001001001738Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
05-02-20204711:45:00-10001840Released to maintain grid security as per IEGC regulation (At Ghani SS)
05-02-20205413:25:002002001967Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
05-02-20205613:46:001501501782Curtailed to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
05-02-20205613:46:002004001782Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
05-02-20205814:25:00-1003001421Released to maintain grid security as per IEGC regulation (At Ghani SS)
05-02-20206014:50:00-15001480Released to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
05-02-20206215:18:00-30001496Released to maintain grid security as per IEGC regulation (At Ghani SS)
06-02-20205112:31:002002002025Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
06-02-20205613:56:002004001764Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
06-02-20205613:56:001001001764Curtailed to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
06-02-20205814:27:00-2002001420Released to maintain grid security as per IEGC regulation (At Ghani SS)
06-02-20205814:27:00-50501420Released to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
06-02-20205914:42:00-20001575Released to maintain grid security as per IEGC regulation (At Ghani SS)
06-02-20205914:42:00-5001575Released to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
07-02-20204912:06:002002002004Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
07-02-20205012:27:00-1001001808Released to maintain grid security as per IEGC regulation (At Ghani SS)
07-02-20205112:44:00-10001865Released to maintain grid security as per IEGC regulation (At Ghani SS)
07-02-20205313:01:002002001988Curtailed to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
07-02-20205714:10:00-20001480Released to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
09-02-20204811:56:002002001810Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
09-02-20205212:58:002004001640Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
09-02-20205212:58:001001001640Curtailed to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
09-02-20205313:10:0050501479Curtailed to maintain grid security as per IEGC regulation (At distributed Solar in percentage )
09-02-20205614:00:002006001247Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
09-02-20205714:05:001002001191Curtailed to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
09-02-20205714:05:001001001191Curtailed to maintain grid security as per IEGC regulation (At Mylavaram SS)
09-02-20205814:18:00-200400891Released to maintain grid security as per IEGC regulation (At Ghani SS)
09-02-20205814:24:00-1000975Released to maintain grid security as per IEGC regulation (At Mylavaram SS)
09-02-20205914:38:00-1001001054Released to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
09-02-20206115:04:002006001076Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
09-02-20206115:09:001002001008Curtailed to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
09-02-20206215:25:00-100100802Released to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
09-02-20206215:25:00-200400802Released to maintain grid security as per IEGC regulation (At Ghani SS)
09-02-20206315:33:00-1000994Released to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
09-02-20206315:33:00-200200994Released to maintain grid security as per IEGC regulation (At Ghani SS)
09-02-20206616:21:00-2000819Released to maintain grid security as per IEGC regulation (At Ghani SS)
09-02-20206616:28:00-500698Released to maintain grid security as per IEGC regulation (At distributed Solar in percentage )
10-02-20203608:55:003003001086Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
10-02-20203608:57:001001001086Curtailed to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
10-02-20203809:20:00-3000881Released to maintain grid security as per IEGC regulation (At Ghani SS)
10-02-20203809:20:00-1000881Released to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
10-02-20203909:39:002002001424Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
10-02-20204009:56:002004001384Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
10-02-20204009:56:001001001384Curtailed to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
10-02-20204110:02:002006001340Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
10-02-20204110:02:0050501340Curtailed to maintain grid security as per IEGC regulation (At distributed Solar in percentage )
10-02-20204310:32:00-200400982Released to maintain grid security as per IEGC regulation (At Ghani SS)
10-02-20204912:10:00-2002001167Released to maintain grid security as per IEGC regulation (At Ghani SS)
10-02-20205213:00:001003001400Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
10-02-20205313:06:001004001354Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
10-02-20205714:01:001505501134Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
10-02-20205714:03:00501501110Curtailed to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
10-02-20205714:03:0050501110Curtailed to maintain grid security as per IEGC regulation (At Mylavaram SS)
10-02-20205914:35:00-500810Released to maintain grid security as per IEGC regulation (At Mylavaram SS)
10-02-20205914:35:00-1500810Released to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
10-02-20206215:17:00-200350933Released to maintain grid security as per IEGC regulation (At Ghani SS)
10-02-20206415:48:00-35001024Released to maintain grid security as per IEGC regulation (At Ghani SS)
10-02-20206415:53:00-500977Released to maintain grid security as per IEGC regulation (At distributed Solar in percentage )
11-02-20203709:08:001001001103Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
11-02-20203809:28:00-10001122Released to maintain grid security as per IEGC regulation (At Ghani SS)
11-02-20204009:57:002002001375Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
11-02-20204110:02:0050501375Curtailed to maintain grid security as per IEGC regulation (At distributed Solar in percentage )
11-02-20204110:02:001501501375Curtailed to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
11-02-20204310:35:00-15001048Released to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
11-02-20204410:59:002004001447Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
11-02-20204511:02:001501501448Curtailed to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
11-02-20204811:51:00-501001239Released to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
11-02-20204912:03:002006001413Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
11-02-20204912:12:00-10001221Released to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
11-02-20205613:59:002002001237Curtailed to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
11-02-20205614:00:001001001290Curtailed to maintain grid security as per IEGC regulation (At Mylavaram SS)
11-02-20205714:04:001007001164Curtailed to maintain grid security as per IEGC regulation (At Ghani SS)
11-02-20205814:26:00-1000751Released to maintain grid security as per IEGC regulation (At Mylavaram SS)
11-02-20205914:41:00-2000774Released to maintain grid security as per IEGC regulation (At Talaricheruvu SS)
11-02-20205914:42:00-200500774Released to maintain grid security as per IEGC regulation (At Ghani SS)
11-02-20206315:31:00-3002001018Released to maintain grid security as per IEGC regulation (At Ghani SS)
11-02-20206516:11:00-2000923Released to maintain grid security as per IEGC regulation (At Ghani SS)
11-02-20206516:15:00-500852Released to maintain grid security as per IEGC regulation (At distributed Solar in percentage )