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PGRR027
Summary
| Title | Analysis of Subsynchronous Resonance Studies in Transmission Studies |
|---|---|
| Next Group | |
| Next Step | |
| Status | Approved on 07/16/2013 |
| Effective Dates |
08/01/2013
|
Action
| Date | Gov Body | Action Taken | Next Steps |
|---|---|---|---|
| 07/16/2013 | BOARD | Approved | |
| 05/02/2013 | TAC | Recommended for Approval | ERCOT Board Consideration |
| 04/11/2013 | ROS | Recommended for Approval | TAC Consideration |
| 03/27/2013 | PLWG | Recommended for Approval | ROS Consideration |
| 02/27/2013 | PLWG | Recommended for Approval | PLWG IA Review |
Voting Record
| Date | Gov Body | Motion | Result |
|---|---|---|---|
| 07/16/2013 | BOARD | To approve PGRR027 as amended by the 7/2/13 TAC comments | Passed |
| 05/02/2013 | TAC | To recommend approval of PGRR027 as recommended by ROS in the 4/11/13 ROS Report | Passed |
| 04/11/2013 | ROS | To recommend approval of PGRR027 as recommended by PLWG in the 3/27/13 PLWG Report and as revised by ROS | Passed |
| 03/27/2013 | PLWG | Consensus to endorse and forward the 2/27/13 PLWG Report as amended by the 3/26/13 Oncor comments and as revised by PLWG and the Impact Analysis to ROS | |
| 02/27/2013 | PLWG | To recommend approval of PGRR027 as amended by the 2/22/13 CenterPoint Energy comments and as revised by PLWG |
Background
| Status: | Approved |
|---|---|
| Date Posted: | Jan 15, 2013 |
| Sponsor: | ERCOT |
| Urgent: | No |
| Sections: | 2.2, 5.1.2, 5.4.1, 5.4.2, 5.4.2.1, 5.4.5.1, 5.7.5 |
| Description: | This Planning Guide Revision Request (PGRR) describes how ERCOT will act to protect the ERCOT Transmission Grid from Subsynchronous Resonance (SSR) oscillations since installation of multiple series compensated transmission lines has increased ERCOT’s vulnerability to such oscillations. |
| Reason: | With the addition of multiple series compensated transmission lines to the ERCOT Transmission Grid, the ERCOT System has become vulnerable to much higher risk of SSR between series compensated lines and other Transmission Elements. Type 3 wind turbines (duel feed induction generators) are more vulnerable than most other Transmission Elements to this condition. The combination of series compensated lines and Type 3 wind turbines in the Competitive Renewable Energy Zone (CREZ) transmission zones makes procedures to protect against this reliability problem critical. This PGRR will provide for these procedures. |
Key Documents
Jan 15, 2013 - doc - 89 KB
Jan 15, 2013 - doc - 54 KB
Jan 24, 2013 - doc - 82.5 KB
Feb 22, 2013 - doc - 82 KB
Mar 1, 2013 - doc - 100 KB
Mar 28, 2013 - doc - 92.5 KB
Apr 1, 2013 - doc - 109.5 KB
Apr 16, 2013 - doc - 116 KB
May 2, 2013 - doc - 119 KB
Jun 25, 2013 - doc - 95.5 KB
Jul 2, 2013 - doc - 96 KB
Jul 17, 2013 - doc - 122.5 KB