Optimizer: Occasional, unexplainable battery charge "spikes"

[daniel309]

Describe the bug

Hi, I am occasionally seeing charging spikes like these two here.

Steps to reproduce

1. use does nothing, optimizer runs normally

...

Configuration details

{
  "batteries": [
    {
      "c_max": 4000,
      "c_min": 0,
      "charge_from_grid": true,
      "d_max": 4000,
      "p_a": 0.00016929001,
      "s_initial": 8500,
      "s_max": 10000,
      "s_min": 500
    }
  ],
  "eta_c": 0.9,
  "eta_d": 0.9,
  "grid": {},
  "strategy": {
    "charging_strategy": "charge_before_export",
    "discharging_strategy": "discharge_before_import"
  },
  "time_series": {
    "dt": [652, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900, 900],
    "ft": [1006.9709, 1382.9219, 1375.8531, 1368.7844, 1356.2859, 1338.3578, 1320.4297, 1302.5016, 1263.3718, 1203.0406, 1142.7094, 1082.3782, 1007.70624, 918.6937, 829.6813, 740.66876, 647.70154, 550.77966, 453.85782, 356.93594, 274.2, 205.65, 137.1, 68.55, 29.990625, 21.421875, 12.853125, 4.284375, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    "gt": [91.459335, 151.21437, 128.87456, 108.081314, 136.78842, 135.1508, 111.792244, 120.97737, 91.92367, 98.27929, 131.60635, 83.885506, 104.553604, 74.48501, 111.01193, 101.87883, 96.25745, 95.445045, 112.62378, 86.57042, 68.09877, 96.78517, 96.48473, 139.96779, 117.86936, 97.36745, 115.53394, 131.0443, 81.47514, 95.192345, 118.20962, 90.00678, 70.98001, 80.850945, 100.5956, 95.556274, 73.318306, 59.1872, 77.723976, 44.608284, 55.45965, 47.604465, 71.818756, 51.317398, 44.047062, 44.737514, 40.35032, 32.266457],
    "p_E": [0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084, 0.000084],
    "p_N": [0.0002001, 0.00019, 0.00019, 0.00019, 0.00019, 0.00019, 0.0001915, 0.0002019, 0.000202, 0.0002284, 0.0002374, 0.000277, 0.0002595, 0.0002929, 0.000305, 0.0003309, 0.0002974, 0.0003332, 0.000362, 0.0004229, 0.0003421, 0.0003783, 0.0004165, 0.0004815, 0.0004638, 0.0004307, 0.0004005, 0.0003789, 0.0004269, 0.0003873, 0.0003719, 0.0003591, 0.0003673, 0.0003517, 0.0003468, 0.0003378, 0.0003636, 0.0003543, 0.0003407, 0.0003229, 0.0003525, 0.0003451, 0.0003426, 0.0003392, 0.0003431, 0.0003349, 0.0003308, 0.0003209]
  }
}

Log details

{
  "batteries": [
    {
      "charging_power": [0, 0, 0, 0, 444.44443, 0, 0, 0, 0, 1000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
      "discharging_power": [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 71.41779, 87.87874, 75.94557, 102.68081, 126.75992, 81.47514, 95.192345, 118.20962, 90.00678, 70.98001, 80.850945, 100.5956, 95.556274, 73.318306, 59.1872, 77.723976, 44.608284, 55.45965, 47.604465, 71.818756, 51.317398, 44.047062, 44.737514, 40.35032, 32.266457],
      "state_of_charge": [8700, 8700, 8700, 8700, 9100, 9100, 9100, 9100, 9100, 10000, 10000, 10000, 10000, 10000, 10000, 10000, 10000, 10000, 10000, 10000, 10000, 10000, 10000, 9920.646, 9823.004, 9738.62, 9624.53, 9483.686, 9393.158, 9287.389, 9156.045, 9056.037, 8977.17, 8887.336, 8775.563, 8669.39, 8587.925, 8522.161, 8435.801, 8386.236, 8324.614, 8271.721, 8191.922, 8134.903, 8085.9614, 8036.2534, 7991.4194, 7955.568]
    }
  ],
  "flow_direction": [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
  "grid_export": [704.8878, 1231.7075, 1246.9785, 1260.7031, 775.05304, 1203.207, 1208.6375, 1181.5242, 1171.4481, 104.76131, 1011.103, 998.4927, 903.15265, 844.2087, 718.6694, 638.7899, 551.4441, 455.33463, 341.23404, 270.3655, 206.10123, 108.86483, 40.61527, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
  "grid_import": [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
  "limit_violations": {},
  "objective_value": 1.3168669,
  "status": "Optimal"
}

What type of operating system or environment does evcc run on?

Linux

External automation

• I have made sure that no external automation like HomeAssistant or Node-RED is active or accessing any of the mentioned devices when this issue occurs.

Nightly build

• I have verified that the issue is reproducible with the latest nightly build

Version

0.301.2

[andig]

Please open issue in andig/evopt

[daniel309]

evcc-io/optimizer#55