Calienta agua gratis utilizando tus excedentes fotovoltaicos, o usando la mejor hora con tarifa PVPC
Analizamos el flujo de Node-Red y Home Assistant que nos permite encender el termo eléctrico sólo cuando tenemos excedentes fotovoltaicos suficientes, o bien, aprovechando los momentos del día en los que la tarifa PVPC está más barata.
A continuación te dejo el código del flujo para Node-Red. Que lo disfrutes
[
{
"id": "14a0d864f4fa8d8c",
"type": "tab",
"label": "Inversor y Termo",
"disabled": false,
"info": "",
"env": []
},
{
"id": "36a40f0e470ef694",
"type": "function",
"z": "14a0d864f4fa8d8c",
"name": "Excedente",
"func": "\nmsg.payload = (msg.payload.M_P + Math.abs(msg.payload.M_P))/2;\nreturn msg;",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [],
"x": 190,
"y": 700,
"wires": [
[
"c3446655ef8611cd"
]
]
},
{
"id": "a89bc2c040263fbb",
"type": "api-call-service",
"z": "14a0d864f4fa8d8c",
"name": "Termo ENCENDER",
"server": "62897e3ae3b61f05",
"version": 5,
"debugenabled": true,
"domain": "switch",
"service": "turn_on",
"areaId": [],
"deviceId": [
"6d8fd3da48f74347aac0a840bb3f3c17"
],
"entityId": [
"switch.sonoff_100177d00a"
],
"data": "on",
"dataType": "jsonata",
"mergeContext": "",
"mustacheAltTags": false,
"outputProperties": [],
"queue": "none",
"x": 1470,
"y": 920,
"wires": [
[
"9f6e5b554b95f766"
]
]
},
{
"id": "98bf13afd4dcb598",
"type": "api-call-service",
"z": "14a0d864f4fa8d8c",
"name": "Termo APAGAR",
"server": "62897e3ae3b61f05",
"version": 5,
"debugenabled": true,
"domain": "switch",
"service": "turn_off",
"areaId": [],
"deviceId": [
"6d8fd3da48f74347aac0a840bb3f3c17"
],
"entityId": [
"switch.sonoff_100177d00a"
],
"data": "off",
"dataType": "jsonata",
"mergeContext": "",
"mustacheAltTags": false,
"outputProperties": [],
"queue": "none",
"x": 1460,
"y": 760,
"wires": [
[
"047d65f3bf6ddadd"
]
]
},
{
"id": "c11703b98969e4dd",
"type": "api-current-state",
"z": "14a0d864f4fa8d8c",
"name": "¿Termo encendido?",
"server": "62897e3ae3b61f05",
"version": 3,
"outputs": 2,
"halt_if": "on",
"halt_if_type": "str",
"halt_if_compare": "is",
"entity_id": "switch.sonoff_100177d00a",
"state_type": "str",
"blockInputOverrides": false,
"outputProperties": [
{
"property": "payload",
"propertyType": "msg",
"value": "",
"valueType": "entityState"
},
{
"property": "data",
"propertyType": "msg",
"value": "",
"valueType": "entity"
}
],
"for": "0",
"forType": "num",
"forUnits": "minutes",
"override_topic": false,
"state_location": "payload",
"override_payload": "msg",
"entity_location": "data",
"override_data": "msg",
"x": 720,
"y": 760,
"wires": [
[
"14c81c6427929ebd"
],
[]
]
},
{
"id": "083b1023448c6c6f",
"type": "api-current-state",
"z": "14a0d864f4fa8d8c",
"name": "¿Termo apagado?",
"server": "62897e3ae3b61f05",
"version": 3,
"outputs": 2,
"halt_if": "off",
"halt_if_type": "str",
"halt_if_compare": "is",
"entity_id": "switch.sonoff_100177d00a",
"state_type": "str",
"blockInputOverrides": false,
"outputProperties": [
{
"property": "payload",
"propertyType": "msg",
"value": "",
"valueType": "entityState"
},
{
"property": "data",
"propertyType": "msg",
"value": "",
"valueType": "entity"
}
],
"for": "0",
"forType": "num",
"forUnits": "minutes",
"override_topic": false,
"state_location": "payload",
"override_payload": "msg",
"entity_location": "data",
"override_data": "msg",
"x": 710,
"y": 820,
"wires": [
[
"47324c12b334b1e2"
],
[]
]
},
{
"id": "c3446655ef8611cd",
"type": "switch",
"z": "14a0d864f4fa8d8c",
"name": "¿Tenemos excedentes?",
"property": "payload",
"propertyType": "msg",
"rules": [
{
"t": "lt",
"v": "1",
"vt": "str"
},
{
"t": "btwn",
"v": "1",
"vt": "num",
"v2": "1700",
"v2t": "num"
},
{
"t": "gt",
"v": "1700",
"vt": "str"
}
],
"checkall": "true",
"repair": false,
"outputs": 3,
"x": 410,
"y": 800,
"wires": [
[
"c11703b98969e4dd"
],
[],
[
"083b1023448c6c6f"
]
]
},
{
"id": "47324c12b334b1e2",
"type": "api-current-state",
"z": "14a0d864f4fa8d8c",
"name": "¿Termo automático?",
"server": "62897e3ae3b61f05",
"version": 3,
"outputs": 2,
"halt_if": "on",
"halt_if_type": "str",
"halt_if_compare": "is",
"entity_id": "input_boolean.termo_automatico",
"state_type": "str",
"blockInputOverrides": false,
"outputProperties": [
{
"property": "payload",
"propertyType": "msg",
"value": "",
"valueType": "entityState"
},
{
"property": "data",
"propertyType": "msg",
"value": "",
"valueType": "entity"
}
],
"for": "0",
"forType": "num",
"forUnits": "minutes",
"override_topic": false,
"state_location": "payload",
"override_payload": "msg",
"entity_location": "data",
"override_data": "msg",
"x": 960,
"y": 820,
"wires": [
[
"0006d4f3c0130ac5"
],
[]
]
},
{
"id": "9f6e5b554b95f766",
"type": "function",
"z": "14a0d864f4fa8d8c",
"name": "TermoON",
"func": "var anterior = flow.get('TermoHora');\nvar d = new Date();\nvar Ahora = d.getTime();\nvar diferencia = Ahora - anterior;\nif (isNaN(anterior)) {\n diferencia = 0;\n}\nflow.set('TermoHora',Ahora);\nmsg.payload = {\n TermoON: 1,\n Tiempo: diferencia\n}\n\nreturn msg;",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [],
"x": 1680,
"y": 920,
"wires": [
[]
]
},
{
"id": "047d65f3bf6ddadd",
"type": "function",
"z": "14a0d864f4fa8d8c",
"name": "TermoOFF",
"func": "var anterior=flow.get('TermoHora');\nvar d = new Date();\nvar Ahora = d.getTime();\nvar diferencia = Ahora - anterior;\nif (isNaN(anterior)) {\n diferencia=0;\n}\nflow.set('TermoHora', Ahora);\nmsg.payload = {\n TermoON: 0,\n Tiempo: diferencia\n}\n\nreturn msg;",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [],
"x": 1670,
"y": 760,
"wires": [
[]
]
},
{
"id": "14c81c6427929ebd",
"type": "api-current-state",
"z": "14a0d864f4fa8d8c",
"name": "¿Termo automático?",
"server": "62897e3ae3b61f05",
"version": 3,
"outputs": 2,
"halt_if": "on",
"halt_if_type": "str",
"halt_if_compare": "is",
"entity_id": "input_boolean.termo_automatico",
"state_type": "str",
"blockInputOverrides": false,
"outputProperties": [
{
"property": "payload",
"propertyType": "msg",
"value": "",
"valueType": "entityState"
},
{
"property": "data",
"propertyType": "msg",
"value": "",
"valueType": "entity"
}
],
"for": "0",
"forType": "num",
"forUnits": "minutes",
"override_topic": false,
"state_location": "payload",
"override_payload": "msg",
"entity_location": "data",
"override_data": "msg",
"x": 980,
"y": 760,
"wires": [
[
"90b58e434e447f5f",
"67745bb3a089d0e6"
],
[]
]
},
{
"id": "0006d4f3c0130ac5",
"type": "api-current-state",
"z": "14a0d864f4fa8d8c",
"name": "¿Termperatura excesiva?",
"server": "62897e3ae3b61f05",
"version": 3,
"outputs": 2,
"halt_if": "on",
"halt_if_type": "str",
"halt_if_compare": "is",
"entity_id": "input_boolean.termo_exceso_temperatura",
"state_type": "str",
"blockInputOverrides": false,
"outputProperties": [
{
"property": "payload",
"propertyType": "msg",
"value": "",
"valueType": "entityState"
},
{
"property": "data",
"propertyType": "msg",
"value": "",
"valueType": "entity"
}
],
"for": "0",
"forType": "num",
"forUnits": "minutes",
"override_topic": false,
"state_location": "payload",
"override_payload": "msg",
"entity_location": "data",
"override_data": "msg",
"x": 1230,
"y": 920,
"wires": [
[],
[
"a89bc2c040263fbb"
]
]
},
{
"id": "88f0fd426318af35",
"type": "api-current-state",
"z": "14a0d864f4fa8d8c",
"name": "Enciende si energía barata",
"server": "62897e3ae3b61f05",
"version": 3,
"outputs": 2,
"halt_if": "on",
"halt_if_type": "str",
"halt_if_compare": "is",
"entity_id": "input_boolean.enciende_si_energia_barata",
"state_type": "str",
"blockInputOverrides": false,
"outputProperties": [
{
"property": "payload",
"propertyType": "msg",
"value": "",
"valueType": "entityState"
},
{
"property": "data",
"propertyType": "msg",
"value": "",
"valueType": "entity"
}
],
"for": "0",
"forType": "num",
"forUnits": "minutes",
"override_topic": false,
"state_location": "payload",
"override_payload": "msg",
"entity_location": "data",
"override_data": "msg",
"x": 380,
"y": 1160,
"wires": [
[
"f79c940e3a8fef4a",
"0e64c3ad333eafc3"
],
[]
]
},
{
"id": "f79c940e3a8fef4a",
"type": "api-current-state",
"z": "14a0d864f4fa8d8c",
"name": "PVPC",
"server": "62897e3ae3b61f05",
"version": 3,
"outputs": 1,
"halt_if": "",
"halt_if_type": "num",
"halt_if_compare": "lt",
"entity_id": "sensor.pvpc",
"state_type": "num",
"blockInputOverrides": false,
"outputProperties": [
{
"property": "payload",
"propertyType": "msg",
"value": "",
"valueType": "entityState"
},
{
"property": "topic",
"propertyType": "msg",
"value": "v_pvpc",
"valueType": "str"
},
{
"property": "v_pvpc",
"propertyType": "flow",
"value": "",
"valueType": "entityState"
}
],
"for": "0",
"forType": "num",
"forUnits": "minutes",
"override_topic": false,
"state_location": "payload",
"override_payload": "msg",
"entity_location": "data",
"override_data": "msg",
"x": 590,
"y": 1100,
"wires": [
[
"a8502b13bc41dfb8"
]
]
},
{
"id": "0e64c3ad333eafc3",
"type": "api-current-state",
"z": "14a0d864f4fa8d8c",
"name": "Coste admitible",
"server": "62897e3ae3b61f05",
"version": 3,
"outputs": 1,
"halt_if": "",
"halt_if_type": "str",
"halt_if_compare": "is",
"entity_id": "input_number.coste_maximo_energia_barata",
"state_type": "num",
"blockInputOverrides": false,
"outputProperties": [
{
"property": "payload",
"propertyType": "msg",
"value": "",
"valueType": "entityState"
},
{
"property": "topic",
"propertyType": "msg",
"value": "v_energiabarata",
"valueType": "str"
},
{
"property": "v_energiabarata",
"propertyType": "flow",
"value": "",
"valueType": "entityState"
}
],
"for": "0",
"forType": "num",
"forUnits": "minutes",
"override_topic": false,
"state_location": "payload",
"override_payload": "msg",
"entity_location": "data",
"override_data": "msg",
"x": 600,
"y": 1200,
"wires": [
[
"a8502b13bc41dfb8"
]
]
},
{
"id": "a8502b13bc41dfb8",
"type": "function",
"z": "14a0d864f4fa8d8c",
"name": "Compara",
"func": "var a = flow.get(\"v_pvpc\");\nvar b = flow.get(\"v_energiabarata\");\n//msg.payload = $number(b)-$number(a);\nif (a<b) {\n flow.set(\"v_pvpc_barato\",true);\n msg.payload = true; \n} else {\n msg.payload = false;\n flow.set(\"v_pvpc_barato\", false);\n}\n\nreturn msg;",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [],
"x": 760,
"y": 1160,
"wires": [
[
"91ef0e9b800983ed"
]
]
},
{
"id": "91ef0e9b800983ed",
"type": "switch",
"z": "14a0d864f4fa8d8c",
"name": "¿Está barato el PVPC?",
"property": "v_pvpc_barato",
"propertyType": "flow",
"rules": [
{
"t": "true"
},
{
"t": "false"
}
],
"checkall": "true",
"repair": false,
"outputs": 2,
"x": 990,
"y": 1160,
"wires": [
[
"083b1023448c6c6f"
],
[]
]
},
{
"id": "dc13deca481c25de",
"type": "inject",
"z": "14a0d864f4fa8d8c",
"name": "",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "*/1 0-23 * * *",
"once": false,
"onceDelay": 0.1,
"topic": "",
"payload": "",
"payloadType": "date",
"x": 130,
"y": 1160,
"wires": [
[
"88f0fd426318af35"
]
]
},
{
"id": "90b58e434e447f5f",
"type": "switch",
"z": "14a0d864f4fa8d8c",
"name": "¿Está barato el PVPC?",
"property": "v_pvpc_barato",
"propertyType": "flow",
"rules": [
{
"t": "true"
},
{
"t": "false"
}
],
"checkall": "true",
"repair": false,
"outputs": 2,
"x": 1230,
"y": 760,
"wires": [
[],
[
"98bf13afd4dcb598"
]
]
},
{
"id": "53520dc1f782f551",
"type": "comment",
"z": "14a0d864f4fa8d8c",
"name": "Gestiona los Excedentes para Encender o Apagar el Termo",
"info": "",
"x": 970,
"y": 700,
"wires": []
},
{
"id": "59aa3c6f72216cf9",
"type": "comment",
"z": "14a0d864f4fa8d8c",
"name": "Si la tarifa PVPC está más barata que el umbral marcado, encendemos el termo",
"info": "",
"x": 520,
"y": 1040,
"wires": []
},
{
"id": "67745bb3a089d0e6",
"type": "debug",
"z": "14a0d864f4fa8d8c",
"name": "debug 1",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "false",
"statusVal": "",
"statusType": "auto",
"x": 1280,
"y": 840,
"wires": []
},
{
"id": "62897e3ae3b61f05",
"type": "server",
"name": "Home Assistant Rpi",
"version": 5,
"addon": false,
"rejectUnauthorizedCerts": true,
"ha_boolean": "y|yes|true|on|home|open",
"connectionDelay": true,
"cacheJson": true,
"heartbeat": false,
"heartbeatInterval": "30",
"areaSelector": "friendlyName",
"deviceSelector": "friendlyName",
"entitySelector": "friendlyName",
"statusSeparator": "at: ",
"statusYear": "hidden",
"statusMonth": "short",
"statusDay": "numeric",
"statusHourCycle": "h23",
"statusTimeFormat": "h:m",
"enableGlobalContextStore": true
}
]