dim_signal_info.md

metadata

type: Parquet
title: dim_signal_info
description: Signal catalogue mapping signal_id to metric name, electrical phase, and unit
resource: ./dim/dim_signal_info.parquet
tags:
  - dimension
  - signal
  - catalogue
timestamp: 2026-07-22T00:00:00.000Z

dim_signal_info

One row per (signal name, phase) combination. Encodes what each value_float in fact_energy_15m represents.

Column	Type	Description
signal_id	INTEGER	PK. Surrogate key
signal_name	VARCHAR	Metric name: energy_kwh_15m, demand_kw, avg_power_kw_15m
phase	VARCHAR	Electrical phase: L1, L2, L3, or ALL (synthetic total)
unit	VARCHAR	Physical unit of the measurement value
description	VARCHAR	Human-readable description of the signal

Row count: 12 (3 signals x 4 phases)

Signal catalogue:

signal_id	signal_name	phase	unit	description
1	energy_kwh_15m	L1	kWh	Energy consumed during window (phase L1)
2	energy_kwh_15m	L2	kWh	Energy consumed during window (phase L2)
3	energy_kwh_15m	L3	kWh	Energy consumed during window (phase L3)
4	energy_kwh_15m	ALL	kWh	Energy consumed during window (all phases)
5	demand_kw	L1	kW	Average demand over window (phase L1)
6	demand_kw	L2	kW	Average demand over window (phase L2)
7	demand_kw	L3	kW	Average demand over window (phase L3)
8	demand_kw	ALL	kW	Average demand over window (all phases)
9	avg_power_kw_15m	L1	kW	Reliability-weighted mean power (phase L1)
10	avg_power_kw_15m	L2	kW	Reliability-weighted mean power (phase L2)
11	avg_power_kw_15m	L3	kW	Reliability-weighted mean power (phase L3)
12	avg_power_kw_15m	ALL	kW	Reliability-weighted mean power (all phases)