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| Original file line number | Diff line number | Diff line change |
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| // CASSYS - Grid connected PV system modelling software | ||
| // (c) Canadian Solar Solutions Inc. | ||
| /////////////////////////////////////////////////////////////////////////////// | ||
| // | ||
| // Title: LossDiagram | ||
| // | ||
| // Revision History: | ||
| // TS - 2017-11-01: Version 1.3.0 First release | ||
| // | ||
| // | ||
| // Description: | ||
| // This class calculates the total losses of the system to write them to a temp | ||
| // file for the interface to read and update the losses diagram | ||
| // | ||
| /////////////////////////////////////////////////////////////////////////////// | ||
| // References and Supporting Documentation or Links | ||
| /////////////////////////////////////////////////////////////////////////////// | ||
| // https://www.dotnetperls.com/xmlwriter: XmlWriter | ||
| // | ||
| /////////////////////////////////////////////////////////////////////////////// | ||
| using System; | ||
| using System.Xml; | ||
| using System.Collections.Generic; | ||
| using System.Windows.Forms; | ||
|
|
||
| namespace CASSYS | ||
| { | ||
| public class LossDiagram | ||
| { | ||
| // Parameters for config and variables used for calculations | ||
| public static Dictionary<String, dynamic> LossOutputs; // Creating a dictionary to hold all output values for the loss diagram; | ||
|
|
||
| // Irradiance values [W/m^2] | ||
| double horizontalGlobRad = 0; // Sum of horizontal global irradiance | ||
| double globRadInPOA = 0; // Sum of global radiation in POA | ||
| double horizonShadeLosses = 0; // Sum of radiation loss due to horizon shading factors | ||
| double nearShadeLosses = 0; // Sum of radiation loss due to row to row shading fatctors | ||
| double soilingLoss = 0; // Sum of radiation loss due to panel soiling | ||
| double incidenceAngleLoss = 0; // Sum of radiation loss due to incidence angle | ||
| double effectivePOARad = 0; // Sum of effective radiation available for power conversion | ||
|
|
||
| // PV array level values [kWh] | ||
| double arrayNomEnergy = 0; // Nominal power of the farm | ||
| double temperatureLoss = 0; // Energy loss due to module temperature efficiency | ||
| double irradianceLevelLoss = 0; // Energy loss due to irradiance level | ||
| double qualityLoss = 0; // Energy loss due to module quality | ||
| double mismatchLoss = 0; // Energy loss due to module mismatch | ||
| double wiringLossDC = 0; // Energy loss due to DC wiring | ||
|
|
||
| // Inverter level variables [kWh] | ||
| double virtInverterInEnergy = 0; // Virtual energy available to the inverter at the inverter input | ||
| double powLowLoss = 0; // Energy loss due to below threshold power at inverter input | ||
| double powHighLoss = 0; // Energy loss due to above nominal power at inverter input (Clipping) | ||
| double voltageLowLoss = 0; // Energy loss due to below threshold voltage at inverter input | ||
| double voltageHighloss = 0; // Energy loss due to above maximum voltage at inverter input | ||
| double actualInverterInEnergy = 0; // Actual energy available to the inverter at the inverter input | ||
| double DCAC_ConversionLoss = 0; // Energy loss due to power conversion from DC to AC | ||
| double inverterOutput = 0; // AC Energy available at the inverter output | ||
|
|
||
| // Transformer level variables [kWh] | ||
| double wiringLossAC = 0; // Energy loss due to AC wiring | ||
| double nightEnergizeLoss = 0; // Energy loss due to transformer energization at night | ||
| double transformerLoss = 0; // Energy loss due to transformer energization during day //----------------------------- | ||
| double gridEnergy = 0; // Energy injected into the grid | ||
|
|
||
| // Blank constructor | ||
| public LossDiagram() | ||
| { | ||
| } | ||
|
|
||
| // Calculate will configure and calculate configure necessary values for loss diagram and assign them to dictionary for output | ||
| public void Calculate() | ||
| { | ||
| // Sum loss values for every individual simulation | ||
| // Radiation level values | ||
| horizontalGlobRad += ReadFarmSettings.Outputlist["Horizontal_Global_Irradiance"]; | ||
| globRadInPOA += ReadFarmSettings.Outputlist["Global_Irradiance_in_Array_Plane"]; | ||
| horizonShadeLosses += ReadFarmSettings.Outputlist["FarShading_Global_Loss"]; | ||
| nearShadeLosses += ReadFarmSettings.Outputlist["Near_Shading_Loss_for_Global"]; | ||
| soilingLoss += ReadFarmSettings.Outputlist["Radiation_Soiling_Loss"]; | ||
| incidenceAngleLoss += ReadFarmSettings.Outputlist["Incidence_Loss_for_Global"]; | ||
| effectivePOARad += ReadFarmSettings.Outputlist["Effective_Irradiance_in_POA"]; | ||
|
|
||
| // PV array level values [kWh] | ||
| arrayNomEnergy += ReadFarmSettings.Outputlist["Array_Nominal_Power"]; | ||
| temperatureLoss += ReadFarmSettings.Outputlist["Power_Loss_Due_to_Temperature"]; | ||
| irradianceLevelLoss += ReadFarmSettings.Outputlist["Energy_Loss_Due_to_Irradiance"]; | ||
| qualityLoss += ReadFarmSettings.Outputlist["Module_Quality_Loss"]; | ||
| mismatchLoss += ReadFarmSettings.Outputlist["Modules_Array_Mismatch_Loss"]; | ||
| wiringLossDC += ReadFarmSettings.Outputlist["Ohmic_Wiring_Loss"]; | ||
|
|
||
| //Inverter level values [kWh] | ||
| virtInverterInEnergy += ReadFarmSettings.Outputlist["Virtual_Inverter_Input_Energy"]; | ||
| powLowLoss += ReadFarmSettings.Outputlist["Inverter_Loss_Due_to_Low_Power_Threshold"]; | ||
| powHighLoss += ReadFarmSettings.Outputlist["Inverter_Loss_Due_to_High_Power_Threshold"]; | ||
| voltageLowLoss += ReadFarmSettings.Outputlist["Inverter_Loss_Due_to_Low_Voltage_Threshold"]; | ||
| voltageHighloss += ReadFarmSettings.Outputlist["Inverter_Loss_Due_to_High_Voltage_Threshold"]; | ||
| actualInverterInEnergy += ReadFarmSettings.Outputlist["Effective_Energy_at_the_Output_of_the_Array"]; | ||
| DCAC_ConversionLoss += ReadFarmSettings.Outputlist["DCAC_Conversion_Losses"]; | ||
| inverterOutput += ReadFarmSettings.Outputlist["Available_Energy_at_Inverter_Output"]; | ||
|
|
||
| // Transformer level values [kWh] | ||
| wiringLossAC += ReadFarmSettings.Outputlist["AC_Ohmic_Loss"]; | ||
| nightEnergizeLoss += ReadFarmSettings.Outputlist["NightTime_Energizing_Loss"]; | ||
| transformerLoss += ReadFarmSettings.Outputlist["External_transformer_loss"]; | ||
| gridEnergy += ReadFarmSettings.Outputlist["Power_Injected_into_Grid"]; | ||
| } | ||
|
|
||
| // Write dictionary values to temp output file | ||
| public void AssignLossOutputs() | ||
| { | ||
| LossOutputs = new Dictionary<String, dynamic>(); | ||
| // Setting up the xml writer for xml output | ||
| XmlWriterSettings writeSettings = new XmlWriterSettings(); | ||
| writeSettings.Indent = true; | ||
| writeSettings.NewLineOnAttributes = true; | ||
| XmlWriter OutputFileWriter = XmlWriter.Create(Application.StartupPath + "/LossDiagramOutputs.xml", writeSettings); | ||
|
|
||
| // Losses due to radiation | ||
| LossOutputs["Horizontal_Global_Radiation"] = horizontalGlobRad * Util.timeStep / 60; | ||
| LossOutputs["Global_Radiation_in_POA"] = globRadInPOA * Util.timeStep / 60; | ||
| LossOutputs["Horizon_Shading_Losses"] = horizonShadeLosses * Util.timeStep / 60; | ||
| LossOutputs["Near_Shading_Losses"] = nearShadeLosses * Util.timeStep / 60; | ||
| LossOutputs["Soiling_Losses"] = soilingLoss * Util.timeStep / 60; | ||
| LossOutputs["Incidence_Angle_Losses"] = incidenceAngleLoss * Util.timeStep / 60; | ||
| LossOutputs["Effective_POA_Radiation"] = effectivePOARad * Util.timeStep / 60; | ||
| // PV CONVERSION takes place here | ||
| // Losses at PV modules | ||
| LossOutputs["PV_Array_Nominal_Energy"] = arrayNomEnergy * Util.timeStep / 60; | ||
| LossOutputs["Energy_Loss_Due_to_Temperature"] = temperatureLoss * Util.timeStep / 60; | ||
| LossOutputs["Energy_Loss_Due_to_Irradiance_Level"] = irradianceLevelLoss * Util.timeStep / 60; | ||
| LossOutputs["Module_Quality_Losses"] = qualityLoss * Util.timeStep / 60; | ||
| LossOutputs["Mismatch_Losses"] = mismatchLoss * Util.timeStep / 60; | ||
| LossOutputs["DC_Wiring_Losses"] = wiringLossDC * Util.timeStep / 60; | ||
| // Losses at inverter | ||
| LossOutputs["Virtual_Inverter_Input"] = virtInverterInEnergy * Util.timeStep / 60; | ||
| LossOutputs["Energy_Lost_to_Input_Voltage_too_Low"] = voltageLowLoss * Util.timeStep / 60; | ||
| LossOutputs["Energy_Lost_to_Input_Voltage_too_High"] = voltageHighloss * Util.timeStep / 60; | ||
| LossOutputs["Energy_Lost_to_Input_Power_too_Low"] = powLowLoss * Util.timeStep / 60; | ||
| LossOutputs["Energy_Lost_to_Input_Power_too_High"] = powHighLoss * Util.timeStep / 60; | ||
| LossOutputs["Actual_Inverter_Input_Energy"] = actualInverterInEnergy * Util.timeStep / 60; | ||
| LossOutputs["DCAC_Conversion_Losses"] = DCAC_ConversionLoss * Util.timeStep / 60; | ||
| LossOutputs["Inverter_Output"] = inverterOutput * Util.timeStep / 60; | ||
| // Losses at transformer | ||
| LossOutputs["AC_Wiring_Losses"] = wiringLossAC * Util.timeStep / 60; | ||
| LossOutputs["Night-Time_Energization_Losses"] = nightEnergizeLoss * Util.timeStep / 60; | ||
| LossOutputs["External_Transformer_Losses"] = transformerLoss * Util.timeStep / 60; | ||
| LossOutputs["Power_Injected_into_Grid"] = gridEnergy * Util.timeStep / 60; | ||
|
|
||
| // Write to temp file | ||
| OutputFileWriter.WriteStartDocument(); | ||
| OutputFileWriter.WriteStartElement("Losses"); | ||
|
|
||
| foreach (KeyValuePair<string, dynamic> entry in LossOutputs) | ||
| { | ||
| // write to xml document | ||
| OutputFileWriter.WriteElementString(entry.Key, entry.Value.ToString()); | ||
| } | ||
|
|
||
| OutputFileWriter.WriteEndElement(); | ||
| OutputFileWriter.WriteEndDocument(); | ||
| OutputFileWriter.Flush(); | ||
| } | ||
| } | ||
| } |
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