Power Electronics Inverters

Purpose

The purpose of this plugin is to collect data from Power Electronics solar inverters via Modbus.

Usage

This plugin reads the data from Power Electronics inverters via Ethernet TCP. This plugin relies on the Modbus Ardexa plugin, and reads from the following inverter models:

PE Freesun HEM
PE Freesun HEMK

It uses the Modbus Specification, and collects from IP connected inverters, using TCP protocol. It will be run every 5 minutes, by default. Inverter data will be collected to the solar table. The inverter will be interrogated for the following data.

NOTE: choose the config file that corresponds to the generation of the Power Electronics inverter, e.g. Gen2 or Gen3.

The following fields will be collected from the config file PE_inverter_HEM_Gen3.txt.

Variable                	    Units
==========================================
Inverter Name								
Facility Name								
Serial Number								
Daily Energy			    Wh		
Yesterday Energy		    Wh		
Monthly Energy			    Wh		
Last Month Energy		    Wh		
Total Energy			    Wh		
Consumed Daily Energy		    Wh		
Consumed Total Energy		    Wh		
Daily Reactive Energy		    VArh	
Yesterday Reactive Energy	    VArh	
Monthly Reactive Energy		    VArh	
Last Month Reactive Energy	    VArh	
Total Reactive Energy		    VArh	
DC Power 1			    W		
DC Power 2			    W		
DC Power 3			    W		
DC Power 4			    W		
DC Current 1			    A		
DC Current 2			    A		
DC Current 3			    A		
DC Current 4			    A		
DC Voltage 1			    V		
DC Voltage 2			    V		
DC Voltage 3			    V		
DC Voltage 4			    V		
DC Voltage 1 Last Start		    V		
DC Voltage 2 Last Start		    V		
DC Voltage 3 Last Start		    V		
DC Voltage 4 Last Start		    V		
DC Power			    W		
DC Current			    A		
AC Power Instantaneous		    W		
AC Reactive Instantaneous	    VAr	
AC Voltage 12			    V		
AC Voltage 23			    V		
AC Voltage 31			    V		
AC Current 1			    A		
AC Current 2			    A		
AC Current 3			    A		
AC Power			    W		
AC Reactive Power		    VAr	
AC Apparent Power		    VA		
Cos Phi				    VA		
LV AC Voltage 12		    V		
LV AC Voltage 23		    V		
LV AC Voltage 31		    V		
LV AC Current 1			    A		
LV AC Current 2			    A		
LV AC Current 3			    A		
LV AC Power			    W		
LV AC Reactive Power		    VAr	
LV AC Apparent Power		    VA		
LV Cos Phi			    VA		
Grid Sequence						
Frequency			    Hz		
Fault										
Fault Code							
Warning									
Warning Code								
Event										
Event Code									
Number of Running Modules					
Next Starting Module						
Module 1 Start Stop						
Module 2 Start Stop						
Module 3 Start Stop						
Module 4 Start Stop						
Module 5 Start Stop						
Module 6 Start Stop						
Module 7 Start Stop						
Module 8 Start Stop						
Modules 1 Enable							
Modules 2 Enable							
Modules 3 Enable							
Modules 4 Enable							
Modules 5 Enable							
Modules 6 Enable							
Modules 7 Enable							
Modules 8 Enable							

For each of the connected modules (usually four), the following fields will be collected. Each module will be collected to a different source (e.g. inverter-module-01).

Variable                			        Units
==============================================================
DC Current 1						A	
DC Current 2						A	
DC Current 3						A	
DC Current 4						A	
DC Current 5						A	
DC Current 6						A	
DC Current 7						A	
DC Current 8						A	
DC Current 9						A	
DC Current 10						A	
Status									
Status Code							
AC Current 1						A	
AC Current 2						A	
AC Current 3						A	
DC Current						A	
DC Voltage P						V	
DC Voltage N						V	
DC Voltage						V	
AC Power						V	
AC Reactive Power					VAr
Humidity						%	
AC Voltage 12						V	
AC Voltage 23						V	
AC Voltage 31						V	

Arguments

Arguments are as follows:

• endpoint. This is either a serial device like /dev/ttyS0 or an IP or DNS like 192.168.1.15

• bus_addresses. An RS485 address in the range 2-63. This can be a hyphenated list like 3-10 or a list like 2,5,7,9

• --port. This is an optional parameter used in an Ethernet gateway, and is the TCP port used for the gateway. Default is 502

• --attempts. This is an optional parameter, and determines how many times to times to attempt to read an inverter value. Default is 1

• --delay. This is the delay in seconds between inverter send and receive commands, AND if attempts > 1. Fractions like 0.3 can be used. Default is 0.05