{ "scenario_start_year": 2011, /* clock-time year, or null for current year */ "scenario_start_month": 1, /* clock-time month or null for this month */ "scenario_start_day": 1, /* used by Duration */ "scenario_start_hour": 1, /* used by Duration */ "scenario_start_minute": 1, /* used by Duration */ "scenario_duration": 1, /* Number of months (used by Monthly Duration) */ "scenario_finish_year": 2011, /* used by Duration */ "scenario_finish_month": 1, /* used by Duration */ "scenario_finish_day": 1, /* used by Duration */ "scenario_finish_hour": 1, /* used by Duration */ "scenario_finish_minute": 1, /* used by Duration */ "forecast_from": 2016-10-01T00:00:00Z, /* omit if forecast from current month */ "by_hh": false, /* To show a line per half hour rather than each month */ /* Run only for these supplies */ "mpan_cores": [ "22 7458 7682 127", ], /* Run only for these sites */ "site_codes": [ "XJJK4", ], /* Rates */ "rates": [ { "contract_id": 46, "start_date": 2014-10-01T00:00:00Z, "finish_date": 2015-05-01T00:00:00Z, "script": { "gbp_per_msp_kwh": 0.667 } }, { "contract_id": 3, "start_date": 2015-01-01T00:00:00Z, "finish_date": 2015-03-01T00:00:00Z, "script": { "gbp_per_gsp_kwh": 5.77 } } ], "era_maps": { 2012-09-01T00:00:00Z: { "llfcs": { "20": { "409": "607", "090": "502" }, "22": { "711": "003", "new_export": "003" } }, "pcs": { "03": "00", "04": "00" }, "sscs": { "0038": "0336" }, "cops": { "6c": "5" }, "supplier_contracts": { 74: 3, "new_export": 3, 9: 51 }, "sc": 400, "mpan_cores": { "22 8679 7237 782": "20 7568 7217 378" } "dnos": { "22": "20" }, "gsp_groups": { "*": "_L" }, /* Properties are combined with the existing era properties, with the ones here overwriting any duplicates */ "properties_overwrite": { "comms_type": "GSM" }, /* Properties are combined with the existing era properties, with the ones here being overwritten by any duplicates */ "properties_overwritten": { "meter_type": "H" }, /* Use hh data rather than register reads for AMRs */ "use_amr_hh_data": false } }, /* HH data to use instead of the data in the database. For each site code, you can specify the hh data that's used, generated, parasitic or gen_net on the site. */ "hh_data": { /* For site code 12098 */ "12098": { "used": " 2017-10-04 19:00, 78.0 2017-10-04 19:30, 74.8 2017-10-04 20:00, 65.3", "generated": " 2017-10-04 19:00, 8.0 2017-10-04 19:30, 8.7 2017-10-04 20:00, 8.5", "parasitic": " 2017-10-04 19:00, 2.0 2017-10-04 19:30, 2.1 2017-10-04 20:00, 2.0" }, /* For site code 59987 */ "59987": { "generated": " 2017-10-09 10:00, 3.0 2017-10-09 10:30, 2.7 2017-10-09 11:00, 3.5" } } }
Before the forecast_date
Chellow uses data in the database (if any), and
after that date it uses data from the same month but in the year before the
forecast_date
.
If a rate script isn't found for a particular date, then the most recent rate script is used.
Virtual bills can include TRIAD estimates and actuals in a variety of ways. For example, a virtual bill may use TRIAD estimates for all months until triad dates are available for that financial year, in which case it switches to using the actual TRIAD for March.
TRIAD estimates are calculated using the actual TRIAD from the latest historical year for which we have TRIAD dates. Historical kW and status are used, together with current LAFs and TRIAD rates, with the result apportioned throughout each month.
Taking 'generated' as an example, for each half-hour Chellow will calculate the
difference between the scenario_generated
and the
existing_generated
. If scenario_generated
>=
existing_generated
then any imported_net
will be reduced
first, then exported_net
will be increased until all the difference is
exhausted. Otherwise if scenario_generated
<
existing_generated
then exported_net
will be reduced first,
and then imported_net
will be increased. A similar approach is taken with
used, parasitic and gen_net kWh.
The method is the same for months after the forecast_date
but with the
existing_generated
being found from the default forecast.