- Home
- Market Rules
- Issues
NPRR387
Summary
| Title | Hydro RRS Deployment Under Frequency Relay Set Point |
|---|---|
| Next Group | |
| Next Step | |
| Status | Approved on 07/19/2011 |
| Effective Dates |
08/01/2011
|
Action
| Date | Gov Body | Action Taken | Next Steps |
|---|---|---|---|
| 07/19/2011 | BOARD | Approved | |
| 07/07/2011 | TAC | Recommended for Approval | ERCOT Board Consideration |
| 06/23/2011 | PRS | Recommended for Approval | TAC Consideration |
Voting Record
| Date | Gov Body | Motion | Result |
|---|---|---|---|
| 07/19/2011 | BOARD | To approve NPRR387 as recommended by TAC in the 7/7/11 TAC Report | Passed |
| 07/07/2011 | TAC | To recommend approval of NPRR387 as recommended by PRS in the 6/23/11 PRS Report | Passed |
| 06/23/2011 | PRS | To recommend approval of NPRR387 as revised by PRS and to forward NPRR387 to TAC | Passed |
Background
| Status: | Approved |
|---|---|
| Date Posted: | Jun 15, 2011 |
| Sponsor: | LCRA |
| Urgent: | Yes |
| Sections: | 3.8, 3.8.4, 3.10.7.2, 3.10.7.5.2, 3.18, 4.4.9.2.2, 6.5.9.2, 8.1.1.4.2 |
| Description: | This Nodal Protocol Revision Request (NPRR) clarifies that for hydro Generation Resources operating in the synchronous condenser fast-response mode to provide Responsive Reserve (RRS), the initiation setting of the automatic under frequency relay setting shall not be lower than 59.80 Hz. It also includes language to address the instances when a hydro Generation Resource operating in synchronous condenser fast-response mode is triggered by an under frequency relay device without a corresponding RRS deployment by ERCOT. Additionally, this NPRR is a companion to Nodal Operating Guide Revision Request (NOGRR) 068, Hydro-Responsive Reserve, and has been prepared in coordination with ERCOT Staff. Changes to revise the use of "hydro-powered Resource" to "hydro Generation Resource" and revisions to Section 3.8 references are also proposed in this NPRR. |
| Reason: | This NPRR establishes the minimum set point at which a hydro Generation Resource must set it’s under frequency relay device for automatic response to an ERCOT System frequency event and also clarifies that same Resource will not be deemed out of compliance when tripped by under frequency relay without corresponding RRS deployment. |
Key Documents
Jun 15, 2011 - doc - 100.5 KB
Jun 21, 2011 - doc - 39 KB
Jun 28, 2011 - doc - 110.5 KB
Jun 29, 2011 - doc - 54.5 KB
Jul 7, 2011 - doc - 112 KB
Jul 19, 2011 - doc - 114.5 KB