PV production metering using Huawei API integrated with Fibaro HC3 as QuickApp

We are using Huawei PV installation on top of our house roof. It has web panel and application available to preview every detail about its settings and working conditions. However I would like to integrate PV power production into my Fibaro HC3. So:

First things first: create Northbound API user in web panel. Select all privileges for data acquisition.

Then grab auth token:

Bash

curl -X POST "https://eu5.fusionsolar.huawei.com/thirdData/login" \
-H "Content-Type: application/json" \
-d '{
"userName": "USERNAME",
"systemCode": "PASSWORD"
}' -v

In response you will get xsfr-token in headers data. Now using this auth token you need to get installations list (stations):

Text

url -X POST "https://eu5.fusionsolar.huawei.com/thirdData/getStationList" \
  -H "Content-Type: application/json" \
  -H "xsrf-token: TOKEN" \
  -d '{}' -v

Now using your station ID get list of your devices:

Bash

curl -X POST "https://eu5.fusionsolar.huawei.com/thirdData/getDevList" \
-H "Content-Type: application/json" \
  -H "xsrf-token: TOKEN" \
  -d '{
"stationCodes": "NE=123456789"
}' -v

To retrieve sort of real time data you need to know your device ID from previous request:

Bash

curl -X POST "https://eu5.fusionsolar.huawei.com/thirdData/getDevRealKpi" \
-H "Content-Type: application/json" \
  -H "xsrf-token: TOKEN" \
  -d '{
"devIds": "112233445566778899",
"devTypeId":"1"
}' -v

Now you should be looking for active_power field which is your PV production power (in Watts).

Now lets say you want it in Fibaro. I went with QuickApp (Lua) as follows:

Lua

function QuickApp:onInit()
    self:debug("onInit Huawei Falownik")
    self:loop()
end

function QuickApp:loop()
    fibaro.setTimeout(1000*60*5, function() 
        self:debug("Huawei Falownik")
        self:debug("Huawei Falownik: login")
        local token   = ''
        local url     = "https://eu5.fusionsolar.huawei.com/thirdData/login"
        local payload = json.encode({userName="USERNAME",systemCode="PASSWORD"})
        net.HTTPClient():request(url, {
            options={
            data    = payload,
            method  = 'POST',
            headers = {
                ["Content-Type"] = "application/json"
            },
            timeout = tcpTimeout,
            },
            success = function(response) 
                token = response.headers['xsrf-token']
                self:debug("Huawei Falownik: getDevRealKpi")
                local url2 = "https://eu5.fusionsolar.huawei.com/thirdData/getDevRealKpi"
                local payload2 = json.encode({devIds="112233445566778899",devTypeId="1"})
                net.HTTPClient():request(url2, {
                    options={
                    data    = payload2,
                    method  = 'POST',
                    headers = {
                        ["Content-Type"] = "application/json",      
                        ["xsrf-token"]= token
                    },
                    timeout = tcpTimeout,
                    },
                    success = function(response) 
                        print(response.status) 
                        print(response.data) 
                        activepower=json.decode(response.data)['data'][1]['dataItemMap']['active_power']
                        self:updateProperty("value", activepower*1000)
                        self:debug(activepower)
                    end,
                    error = function(message)
                        print("error:", message) 
                    end 
                })
            end,
            error = function(message)
                print("error:", message)
            end 
        })
        self:loop(text)
    end)
end

Finally you can setup production meter using this QuickApp. Last thing to remember is traffic limiting on Huawei side sa request data lets say once per 5 minutes or so, otherwise you will get error message instead.

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