baterie pri sell neklesne pod 20% ale pri normalnim provozu muze jit az k 10%, mame tak rezervu a neohrozime si nahly propad procent battery packu

backend/services/planning_engine.py

@@ -31,6 +31,8 @@ SLOT_WEIGHT_MEDIUM   = 0.7      # 36–72h
 SLOT_WEIGHT_LOW      = 0.4      # 72–96h
 CURTAILMENT_PENALTY  = 0.001    # Kč/Wh – malá penalizace za omezení FVE pole A
 SOLVER_TIME_LIMIT    = 10       # sekund
+# MILP: jakýkoli významný výkon exportu ge (W) ⇒ koncové soc[t] ≥ arb_base_wh (rezerva z DB)
+GE_MIN_EXPORT_W      = 1.0
 CORRECTION_WINDOW_H  = 1        # hodina zpět pro výpočet korekčního faktoru
 CORRECTION_MIN_CLAMP = 0.5      # spodní limit korekčního faktoru
 CORRECTION_MAX_CLAMP = 1.5      # horní limit korekčního faktoru
@@ -332,6 +334,7 @@ def solve_dispatch(
     bd  = [pulp.LpVariable(f"bd_{t}",  0, battery.max_discharge_power_w)   for t in range(T)]
     soc = [pulp.LpVariable(f"soc_{t}", min_soc_wh, battery.soc_max_wh) for t in range(T)]
     w_arb = [pulp.LpVariable(f"w_arb_{t}", cat=pulp.LpBinary) for t in range(T)]
+    z_export = [pulp.LpVariable(f"z_export_{t}", cat=pulp.LpBinary) for t in range(T)]
     ca  = [pulp.LpVariable(f"ca_{t}",  0, slots[t].pv_a_forecast_w)        for t in range(T)]
     hp  = [pulp.LpVariable(f"hp_{t}",  0, heat_pump.rated_heating_power_w) for t in range(T)]
     soc_deficit_24h = pulp.LpVariable("soc_deficit_24h", 0, battery.usable_capacity_wh)
@@ -410,6 +413,13 @@ def solve_dispatch(
             + battery.max_discharge_power_w * w_arb[t]
         )
 
+        # Významný export ⇒ koncové SoC ≥ ekonomická rezerva (arb_base_wh), ne dynamická arb_floor_series
+        m_ge = float(grid.max_export_power_w)
+        m_soc_bigm = float(battery.usable_capacity_wh)
+        prob += ge[t] <= m_ge * z_export[t]
+        prob += ge[t] >= GE_MIN_EXPORT_W * z_export[t]
+        prob += soc[t] >= arb_base_wh - m_soc_bigm * (1 - z_export[t])
+
         # EV – limity a připojení
         for e in range(EV):
             connected = (