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Master Data
Base
The file "Master.dat"
contains location code, meter serial number, CT ratio, CVT ratio and location
description for all the Special Energy Meters (SEMs) installed in the Northern
Region.
Raw
Data
The
file "NR-Raw.npc" contains raw data as received from the field for all SEMs
in Northern Region.
Processed SEM
Data
Processed SEM data is in the form
of datewise folders containing the files for different meters detailing the
transaction of daily total MWh, high voltage MVARh, low voltage MVARh and each
15 minute time block MWH.
Net Injection of
ISGS & BBMB
These are seperate
folders for BBMB, Inter Regional Exchange, NHPC, NTPC, NPC & shared projects
containing the datewise files detailing each ISGS/BBMB stations' net injection
in MWh for each 15 minutes time block along with the frequency codes during the
block.
Net Drawal of States
These have statewise folders indicating
15-minute MWh drawals at each inter-utility exchange point as well as the
summated drawals of all these points as recorded by the SEMs. Wherever
required, suitable multiplication factors have been applied either due to losses
on account of wheeling or where standby meters have been used. Details of these
would be available in the Discrepancies Report for the week and SEM Data
Computations under Commercial link from the
NRLDC Home Page.
Schedule Vs
Actuals
These are datewise files containing the comparision of schedules as implemented
with all before-the-fact revisions vis-a-vis net injection of all ISGS/BBMB
stations and net drawal of all state utilities as calculated from SEM data for
each 15 minute time block along with frequency code.The power flow on some small
radial feeders at 66 KV and below voltage levels have been included with effect
from 10th February 2003. A folder for transmission loss computations for the
week as well as assumptions for small feeders at 66 KV and below is also
included for information with effect from 10th February
2003.
Schedule Vs Actuals
Trends
These are separate folders
for each ISGS/BBMB station and state utility clubbed according to organisation
containing the datewise files having graphical representation of daily schedule,
actual injection/drawal and telemetered frequency.The power flow on some small
radial feeders at 66 KV and below voltage levels have been included with effect
from 10th February 2003.
Exception Report
The
file "Exception Report.doc" indicates the tripping/transmission constraints
affecting the ISGS generation.
Discrepancy
Report
The
file "Discrepancies.doc" gives the details of missing SEM data and observations
on the SEM data received at NRLDC.
Reactive Energy
Exchanges
This contains 60 files for Inter-Utility reactive power exchanges for the week.
The help file "Reactive_Index" explains the various file types for reactive
energy exchanges. The file nomenclature adopted is ddmmyy.FileType.
NOTE:
1. Frequency codes from "00" to "99" are for
frequency range of 49.00 to 51.00 Hz ("00" for frequency <= 49.00 Hz and
"99" for frequency >= 51.00 Hz).
2. Post facto revision of schedules on
account of nuclear power stations, BBMB generation, shared projects,
inter-regional exchanges with ER has not been done and the same forms part of
the account issued by NREB Secretariat. Likewise, the provisions of the Central
Electricity Regulatory Commission's (CERC) orders on Availability Based Tariff
have also not been incorporated & the same forms part of the UI account
issued by NREB Secretariat.
3. The information above is purely for
operational purposes & is intended to act as a guide to the power system
operators in the Northern Region. NRLDC is not responsible for any commercial
use of above data made by any utility. The weekly UI accounts and the monthly
Regional Energy Accounts issued by NREB Secretariat is the ultimate reference
for all inter-utility payments in line with the orders of the Central
Electricity Regulatory Commission.
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