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EMS System Generated Notices

EMS System-Generated Notices

The following notices are Energy Management System (EMS) system-generated and will display on the MIS website’s Notices page. Additionally these notices are sent out asynchronously to the Market Participants(MP) Listeners.

When an alert clears (or becomes normal) in EMS, a subsequent alert will be generated with text (“-RETURN”) appended to original alert. This follow-up alert will also be displayed on the MIS website’s Notices page and delivered to MP listeners.

The following table identifies the Resource Limit Calculator (RLC) alarm ID, description of the requirement, notice type, priority, audience, and alert text. Please note that any alert with a * in the description denotes that the resource has become undispatchable by SCED, and RLC will set HDL=LDL=MW Output.

# ALARMID Description Type Priority Audience Text
1 RLCUHSL The telemetered HSL <= 0. Telemetry High A QSE QSE: <QSE_ID> UNIT: <ID> ALERT: TEL HSL BELOW 0 Note: <ID> <SUBSTATION>-<UNIT#>
2 RLCULSL The telemetered LSL < 0. Telemetry High A QSE QSE: <QSE_ID> UNIT: <ID> ALERT: TEL LSL BELOW 0 Note: <ID> <SUBSTATION>-<UNIT#>
3 RLCHSLAS HSL - LSL < Sum of Reg-Up Responsibility, Reg-Down Responsibility, Responsive Responsibility and Non-Spin Responsibility. * Telemetry High A QSE QSE: <QSE_ID> UNIT: <ID> ALERT: HSL MINUS LSL BELOW SUM OF AS RESP Note: <ID> <SUBSTATION>-<UNIT#>
4 RLCSCEUR SCED Up Ramp Rate <= 0. Telemetry High A QSE QSE: <QSE_ID> UNIT: <ID> ALERT: SURAMP BELOW 0 Note: <ID> <SUBSTATION>-<UNIT#>
5 RLCSCEDR SCED Down Ramp Rate <= 0. Telemetry High A QSE QSE: <QSE_ID> UNIT: <ID> ALERT: SDRAMP BELOW 0 Note: <ID> <SUBSTATION>-<UNIT#>
6 RLCCCNO For Combined Cycle configuration number validation, set it to default or last good value not 0. * Telemetry High A QSE QSE: <QSE_ID> UNIT: <ID> ALERT: INVALID CC CONFIG Note: <ID> <SUBSTATION>-<UNIT#>
7 RLCHLSL Invalid HSL or LSL telemetry (quality suspect). * Telemetry High A QSE QSE: <QSE_ID> UNIT: <ID> ALERT: INVALID TEL HSL OR LSL Note: <ID> <SUBSTATION>-<UNIT#>
8 RLCXGTBD Invalid or suspect resource status codes. * Telemetry High A QSE QSE: <QSE_ID> UNIT: <ID> ALERT: INVALID TEL RST Note: <ID> <SUBSTATION>-<UNIT#>
9 BCRSMTCH Add a SCADA calculation to sum the Mw telemetry of transmission lines moving power from a generating plant.  Compare this total to the sum of the telemetered Mw output of the Resources at the same plant.  Alarm the QSE if the amount exceeds a threshold. Telemetry High A QSE ALERT :<RES_ID> - TEL MW= <VALUE> TRANS SUM= <VALUE> Note: <RES_ID> <SUBSTATION> <UNIT#>
10 RLCSUSMW If the HDL = LDL = Actual Generation and Resource Status is not OFF then alarm the QSE operator to verify data telemetry used by RLC. * Telemetry High A QSE QSE: <QSE_ID> UNIT: <ID> ALERT: SUSPECT TEL HDL=LDL=MW
11 RLCRSTMW If Resource Status is OFF, and Resource output Mw is greater than 2 Mw, then alarm incorrect status. If Resource Status is ON, but MW < 0.1 MW, then alarm incorrect status. RLC will set RST to “N/A” and set HDL=LDL=MW Output – SDRAMP * 5. Telemetry High A QSE QSE: <QSE_ID> UNIT: <ID> ALERT: INCONSIST RST AND MW Note: <ID> <SUBSTATION>-<UNIT#>
12 URGDASRT URRASRT UNSRSRT The Ancillary Responsibilities (Reg-Up, Reg-Down, Responsive and Non-Spin) < 0 RLC will set the AS responsibility to 0. Telemetry High A QSE QSE:[qse], SUBSTATION:[substn], UNIT:[unitname],REGUP AS RESP < 0 QSE:[qse], SUBSTATION:[substn], UNIT:[unitname],REGDWN AS RESP < 0 QSE:[qse], SUBSTATION:[substn], UNIT:[unitname],RESP AS RESP < 0 QSE:[qse], SUBSTATION:[substn], UNIT:[unitname],NSPIN AS RESP < 0
13 URRASRS UNSRSRSS The Ancillary Schedules (Responsive and Non-Spin) < 0 RLC will set the AS responsibility to 0. Telemetry High A QSE QSE:[qse], SUBSTATION:[substn], UNIT:[unitname],RESP AS SCHED < 0 QSE:[qse], SUBSTATION:[substn], UNIT:[unitname],NSPIN AS SCHED < 0
14 BCVOLLUN ERCOT shall notify each QSE representing the Split Generation Resource of any errors in telemetry detected by the State Estimator. Telemetry High A QSE QSE:[qse], SUBSTATION:[substn], UNIT:[unitname],SE SGU ERROR MW=[123] TSUM=[1234],
15 BCABRANCH Once transmission line and transformer Dynamic Ratings are retrieved, ERCOT shall compare the actual flow and state estimated flow calculation of MVA to the effective Transmission Element limit and, if an out-of-limit condition exists, ERCOT shall produce an overload notification Telemetry High A TSP ALERT: <SUBSTATION : EQUIPMENT IDENTIFICATION> <value>  TEL OVERLOAD OR ALERT: <SUBSTATION : EQUIPMENT IDENTIFICATION> <value>  SE OVERLOAD
16 UREGUP UREGDN The Reg-Up/Reg-Down Participation Factors < 0. RLC will set the Reg-Up/Reg-Down Participation Factors to 0. Telemetry High QSE QSE:[qse], SUBSTATION:[substn], UNIT:[unitname],REGUP PF < 0 QSE:[qse], SUBSTATION:[substn], UNIT:[unitname],REGDOWN PF < 0 QSE:[qse], SUBSTATION:[substn], UNIT:[unitname],HSL > THAN CURCAP
17 RLCHCAP HSL is higher than the net dependable capability Telemetry High QSE QSE:[qse], SUBSTATION:[substn], UNIT:[unitname],HSL > THAN CURCAP
18 LFUPDT ERCOT System, Weather Zone, and Load Zone Load forecasts for the next seven days, by hour, and a message on update indicating any changes to the forecasts by means of the Messaging System; Market Message Low All MPs ERCOT 7 DAY LF UPDATED <Add Alert Time>
19 EMS-LDF-UPDATE-VERIFICATION Notify QSEs of posting and availability of report NP4-159: Load Distribution Factors. Market Message Low All MPs EMS-LDF-UPDATE-VERIFICATION completed on <YYYY-MM-DD HH24:MI:SS>. The LDF Report will be available by <YYYY-MM-DD HH24:MI:SS>

# ALARMID Description Type Priority Audience Text
1 RLCUHSL The telemetered HSL <= 0. * for generation resources excluding ESRs Telemetry High A QSE QSE: <QSE_ID> UNIT: <ID> ALERT: TEL HSL BELOW 0 Note: <ID> <SUBSTATION>-<UNIT#>
2 RLCULSL The telemetered LSL < 0. * for generation resources excluding ESRs Telemetry High A QSE QSE: <QSE_ID> UNIT: <ID> ALERT: TEL LSL BELOW 0 Note: <ID> <SUBSTATION>-<UNIT#>
6 RLCCCNO For Combined Cycle configuration number validation, set it to default or last good value not 0. * Telemetry High A QSE QSE: <QSE_ID> UNIT: <ID> ALERT: INVALID CC CONFIG Note: <ID> <SUBSTATION>-<UNIT#>
7 RLCHLSL Invalid HSL or LSL telemetry (quality suspect). * Telemetry High A QSE QSE: <QSE_ID> UNIT: <ID> ALERT: INVALID TEL HSL OR LSL Note: <ID> <SUBSTATION>-<UNIT#>
8 RLCXGTBD Invalid or suspect resource status codes. * Telemetry High A QSE QSE: <QSE_ID> UNIT: <ID> ALERT: INVALID TEL RST Note: <ID> <SUBSTATION>-<UNIT#>
9 BCRSMTCH Add a SCADA calculation to sum the Mw telemetry of transmission lines moving power from a generating plant.  Compare this total to the sum of the telemetered Mw output of the Resources at the same plant.  Alarm the QSE if the amount exceeds a threshold. Telemetry High A QSE ALERT :<RES_ID> - TEL MW= <VALUE> TRANS SUM= <VALUE> Note: <RES_ID> <SUBSTATION> <UNIT#>
10 RLCSUSMW If the HDL = LDL = Actual Generation and Resource Status is not OFF then alarm the QSE operator to verify data telemetry used by RLC. * Telemetry High A QSE QSE: <QSE_ID> UNIT: <ID> ALERT: SUSPECT TEL HDL=LDL=MW
11 RLCRSTMW If Resource Status is OFF, and Resource output Mw is greater than 2 Mw, then alarm incorrect status. If Resource Status is ON, but MW < 0.1 MW, then alarm incorrect status. RLC will set RST to “N/A” and set HDL=LDL=MW Output – SDRAMP * 5. Telemetry High A QSE QSE: <QSE_ID> UNIT: <ID> ALERT: INCONSIST RST AND MW Note: <ID> <SUBSTATION>-<UNIT#>
12 BCVOLLUN ERCOT shall notify each QSE representing the Split Generation Resource of any errors in telemetry detected by the State Estimator. Telemetry High A QSE QSE:[qse], SUBSTATION:[substn], UNIT:[unitname],SE SGU ERROR MW=[123] TSUM=[1234],
13 BCABRANCH Once transmission line and transformer Dynamic Ratings are retrieved, ERCOT shall compare the actual flow and state estimated flow calculation of MVA to the effective Transmission Element limit and, if an out-of-limit condition exists, ERCOT shall produce an overload notification Telemetry High A TSP ALERT: <SUBSTATION : EQUIPMENT IDENTIFICATION> <value>  TEL OVERLOAD OR ALERT: <SUBSTATION : EQUIPMENT IDENTIFICATION> <value>  SE OVERLOAD
14 RLCHCAP HSL is higher than the net dependable capability Telemetry High QSE QSE:[qse], SUBSTATION:[substn], UNIT:[unitname],HSL > THAN CURCAP
15 LFUPDT ERCOT System, Weather Zone, and Load Zone Load forecasts for the next seven days, by hour, and a message on update indicating any changes to the forecasts by means of the Messaging System; Market Message Low All MPs ERCOT 7 DAY LF UPDATED <Add Alert Time>
16 EMS-LDF-UPDATE-VERIFICATION Notify QSEs of posting and availability of report NP4-159: Load Distribution Factors. Market Message Low All MPs EMS-LDF-UPDATE-VERIFICATION completed on <YYYY-MM-DD HH24:MI:SS>. The LDF Report will be available by <YYYY-MM-DD HH24:MI:SS>
17 RLCNEGRR The Normal or Emergency Ramprates < 0 Telemetry High QSE QSE: <QSE_ID> UNIT: <ID> ALERT: NEG RAMP RATE Note: <ID> -> <SUBSTATION>-<UNIT#>
18 RLCSOCMX
RLCSOCMN
SOC > Max SOC or SOC < MNSOC Telemetry High QSE QSE: <QSE_ID> UNIT: <ID> ALERT: SOC > MXSOC/SOC<MNSOC Note: <ID> -> <SUBSTATION>-<UNIT#>
19 RLCHLTL The telemetered HSL < LSL. * Telemetry High QSE QSE: <QSE_ID> UNIT: <ID> ALERT: TEL LSL BELOW 0 Note: <ID> -> <SUBSTATION>-<UNIT#>
20 RLCNRURR
RLCNRDRR
RLCNECRR
RLCNNSRR
The Ancillary Service Ramp Rates (RURR, RDRR, ECRSRR, NSRR) <0 Telemetry High QSE QSE: <QSE_ID> UNIT/LOAD: <ID> ALERT: NEG REGUP/REGDN/ECRS/NS RAMP RATE Note: <ID> -> <SUBSTATION>-<UNIT/LOAD#>
21 RLCNEGPF
RLCNEGUF
RLCNEGFF
RRS-PFR, RRS-FFR and RRS-UFR MW capability < 0 Telemetry High QSE QSE: <QSE_ID> UNIT/LOAD: <ID> ALERT: NEG RRSPFR/RRSUFR/RRSFFR MW CAP Note: <ID> -< <SUBSTATION>-<UNIT/LOAD#>
22 RLCRURRQ
RLCRDRRQ
RLCECRRQ
RLCNSRRQ
AS Ramprates > AS qualification Telemetry High QSE QSE: <QSE_ID> UNIT/LOAD: <ID> ALERT: REGUP/REGDN/ECRS/NS RR > Qual MW Note: <ID> -> <SUBSTATION>-<UNIT/LOAD#>
23 RLCRRPFQ
RLCRRUFQ
RLCRRFFQ
AS MW capability > AS qualification Telemetry High QSE QSE: <QSE_ID> UNIT/LOAD: <ID> ALERT: RRSPFR/RRSUFR/RRSFFR MW > Qual MW Note: <ID> -> <SUBSTATION>-<UNIT/LOAD#>
24 RLCLRUFQ
RLCLRFFQ
RLCLRECQ
For NCLRs self provided RRS-UFR, RRS-FFR, ECRS > Qualified MW Telemetry High QSE QSE: <QSE_ID> LOAD: <ID> ALERT: UFR/FFR/ECRS MW > Qual MW Note: <ID> -> <SUBSTATION>-<LOAD#>
25 RLUFARM For NCLRs HSUF is disarmed and Self Provision MW > 0 Telemetry High QSE QSE: <QSE_ID> LOAD: <ID> ALERT: HSUF DISARMED UFR/FFR/ECRS MW >0 Note: <ID> -> <SUBSTATION>-<LOAD#>