power_system.cc

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#include "power_system.h"
#include <DSimEngine2/dsim_connection.h>

power_system :: power_system(dsim_model_setup *setup) : dsim_model(setup)
{
    printf("power system starting up\n");
}

void power_system :: initialize_data()
{
        dsim_model::initialize_data();
    
    // The power network
    power_network_dsim = create_managed_network("power", "Power system network" );
    
    // The variable in the network
        power_network_dsim->declare_variable("power", sd_type_double, "Power input or output");
    
    double power = 0;
    net_power_dsim = create_output("net_power", sd_type_double, &power,1, 1, "W", "Net power");
    net_power_dsim.mark_telemetry();
    
    int n = 0;
    number_connections_dsim = create_output("number_connections", sd_type_int, &n, 1, 1, "", "Number of connections");
    number_connections_dsim.mark_telemetry();   

        configure_timestep(true, false, false);
}

void power_system :: initialization_complete()
{
    dsim_model::initialization_complete();
}

void power_system :: pre_calculate()
{
        dsim_model::initialize_timestep();      
    
    // This is to iterate through the network
    dsim_connection_iterator iterator = power_network_dsim->connection_iterator();
    
    double net_power = 0;
    int c_count = power_network_dsim->connection_count();

    // If there are any connections find the power consumed or produced
    for (int k = 0; k < c_count; k++ )
    {
        dsim_connection *c = iterator.connection(); 
        std::string variable_path = std::string(c->destination_path()) + ":power";
        dsim_variable var = request_variable(variable_path.c_str());
        dsim_value v = var.value(); // or var.cointegrated_value() if desired
        if (v.valid())
        {
            net_power += v.double_value();
        }
        iterator.next();
    }
    

    net_power_dsim.set_value_as_double(net_power);
    number_connections_dsim.set_value_as_int(c_count);
}


extern "C"
{
    dsim_model *PowerSystem(void *setup);
    
        dsim_model *PowerSystem(void *setup)
        {
                return new power_system((dsim_model_setup *)setup);
        }
}