ladime

backend/tests/test_planning_dispatch_milp.py

@@ -1222,7 +1222,7 @@ class NegativeSellPvChargeTests(unittest.TestCase):
             50.0,
             operating_mode="AUTO",
         )
-        self.assertEqual(snap.get("planner_build_tag"), "2026-05-24-ba81-soc-headroom-v7")
+        self.assertEqual(snap.get("planner_build_tag"), "2026-05-25-neg-sell-no-export-fixed-v8")
         self.assertGreater(
             results[0].battery_setpoint_w,
             5_500,
@@ -1366,7 +1366,7 @@ class NegativeSellPvChargeTests(unittest.TestCase):
             50.0,
             operating_mode="AUTO",
         )
-        self.assertEqual(snap.get("planner_build_tag"), "2026-05-24-ba81-soc-headroom-v7")
+        self.assertEqual(snap.get("planner_build_tag"), "2026-05-25-neg-sell-no-export-fixed-v8")
         self.assertEqual(len(results), len(slots))
 
     def test_gen_cutoff_full_soc_neg_sell_with_pv_b_feasible(self) -> None:
@@ -1430,9 +1430,69 @@ class NegativeSellPvChargeTests(unittest.TestCase):
             55.0,
             operating_mode="AUTO",
         )
-        self.assertEqual(snap.get("planner_build_tag"), "2026-05-24-ba81-soc-headroom-v7")
+        self.assertEqual(snap.get("planner_build_tag"), "2026-05-25-neg-sell-no-export-fixed-v8")
         self.assertEqual(len(results), len(slots))
 
+    def test_fixed_tariff_neg_sell_no_grid_export(self) -> None:
+        """BA81: sell<0 nesmí vést do sítě (záporná výkupní cena) — jen nabíjení/curtail."""
+        slots = [
+            PlanningSlot(
+                interval_start=datetime(2026, 5, 25, 7, 0, tzinfo=timezone.utc)
+                + timedelta(minutes=15 * i),
+                buy_price=3.088,
+                sell_price=-0.5,
+                pv_a_forecast_w=10_000,
+                pv_b_forecast_w=2_500,
+                load_baseline_w=300,
+                ev1_connected=False,
+                ev2_connected=False,
+                allow_charge=True,
+                allow_discharge_export=False,
+                charge_acquisition_buy_czk_kwh=3.61,
+            )
+            for i in range(4)
+        ]
+        battery = _battery(uc_wh=12_500.0, terminal_soc_value_factor=0.0)
+        battery.soc_max_wh = 12_500.0
+        battery.max_charge_power_w = 6_250
+        grid = SimpleNamespace(
+            max_import_power_w=17_000,
+            max_export_power_w=16_000,
+            block_export_on_negative_sell=False,
+            deye_gen_microinverter_cutoff_enabled=True,
+        )
+        hp = SimpleNamespace(
+            rated_heating_power_w=0,
+            tuv_min_temp_c=45.0,
+            tuv_target_temp_c=55.0,
+        )
+        vehicles = [
+            SimpleNamespace(
+                max_charge_power_w=0,
+                battery_capacity_kwh=1.0,
+                default_target_soc_pct=80.0,
+            ),
+            SimpleNamespace(
+                max_charge_power_w=0,
+                battery_capacity_kwh=1.0,
+                default_target_soc_pct=80.0,
+            ),
+        ]
+        results, _ms, _ = solve_dispatch(
+            slots,
+            battery,
+            hp,
+            grid,
+            [None, None],
+            vehicles,
+            8_000.0,
+            50.0,
+            operating_mode="AUTO",
+        )
+        for r in results:
+            self.assertGreaterEqual(r.battery_setpoint_w, 0, "neg sell má nabíjet")
+            self.assertGreaterEqual(r.grid_setpoint_w, 0, "neg sell bez exportu do sítě")
+
 
 class AutoPvSurplusExportTests(unittest.TestCase):
     """Plná baterie + vysoká FVE: export přebytku (ge_pv), ne curtailment, bez SELL."""