Maximum Demand Electrical |work| Info

"limit_kw": 160.0, "warning_threshold_pct": 85, "window_minutes": 15, "auto_reset_peak_on": "monthly"

Demand (kW) = (Energy consumed over window T) / (T in hours) Example for 15‑min window (0.25 hours):

| Priority | Load Type | Action at demand > limit | |----------|-----------|--------------------------| | 1 (low) | Water heater | Shed first | | 2 | HVAC – stage 2 | Shed second | | 3 (high) | Lighting, critical | Never shed | | Signal | Source | Use | |--------|--------|-----| | Energy pulses (kWh) | Utility meter / CT + energy IC | Calculate delta per sub‑interval | | Voltage, Current | Power quality meter | Compute kVA if PF varies | | Relay outputs | PLC / MCU | Load shedding control | | Real‑time clock | RTC / NTP | Timestamp peaks | maximum demand electrical

For kVA demand (common for utilities), measure voltage and current, then:

"timestamp": "2026-04-14T10:15:00Z", "demand_kw": 134.7, "limit_kw": 150.0, "demand_percent": 89.8, "peak_kw": 148.2, "peak_timestamp": "2026-04-13T18:30:00Z", "warning_level": "none", "shedding_active": false "limit_kw": 160

# Store in circular buffer self.buffer[self.index] = delta_kwh self.index = (self.index + 1) % self.num_blocks

Demand = (kWh_last_15min) / 0.25 To avoid storing raw energy every second, break window into N sub‑intervals. measure voltage and current

Two‑stage shedding + restoration.