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Update DERA output and minor fixes #302

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Merged
merged 4 commits into from
Dec 19, 2022
Merged

Update DERA output and minor fixes #302

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17eb1dd
update pref
rodrigomha Dec 5, 2022
e7dc6e1
update power ratios in DERA model
rodrigomha Dec 5, 2022
2947af6
add DERA output current
rodrigomha Dec 5, 2022
dc76275
update test 45
rodrigomha Dec 5, 2022
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1 change: 1 addition & 0 deletions src/initialization/init_device.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -571,6 +571,7 @@ function initialize_dynamic_device!(
end

set_P_ref(dynamic_wrapper, Pref)
PSY.set_P_ref!(dynamic_device, Pref)
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we need to either fix all the setters or not overload this one.

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This is part of a major issue related with output results that we would need to properly fix once we do a restructure of output results.

I need to add this line because I need Pref to compute the output current, but I don't have access to the wrapper in the simulation outputs, that is the one that has the information about Pref. So I overload this info in the initialization.

This creates another problem though, because if we change Pref from a callback, only the information stored in the wrapper will change (and hence correctly in the simulation), but the output result will not change. We would need to correct this, since is similar as the issue #269

set_Q_ref(dynamic_wrapper, Qref)
set_V_ref(dynamic_wrapper, Vref)
set_ω_ref(dynamic_wrapper, Freq_ref)
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14 changes: 10 additions & 4 deletions src/models/device.jl
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Expand Up @@ -1015,6 +1015,7 @@ function _mdl_ode_AggregateDistributedGenerationA!(
t,
) where {T <: ACCEPTED_REAL_TYPES}
sys_ω = global_vars[GLOBAL_VAR_SYS_FREQ_INDEX]
Sbase = get_system_base_power(dynamic_device)
Vt = sqrt(voltage_r^2 + voltage_i^2)

#Obtain References (from wrapper and device)
Expand Down Expand Up @@ -1050,6 +1051,8 @@ function _mdl_ode_AggregateDistributedGenerationA!(
rrpwr = PSY.get_rrpwr(get_device(dynamic_device))
Tv = PSY.get_Tv(get_device(dynamic_device))
Iq_lim = PSY.get_Iq_lim(get_device(dynamic_device))
basepower = PSY.get_base_power(get_device(dynamic_device))
base_power_ratio = basepower / Sbase

#STATE Vmeas
_, dVmeas_dt = low_pass_mass_matrix(Vt, Vmeas, 1.0, T_rv)
Expand Down Expand Up @@ -1115,8 +1118,8 @@ function _mdl_ode_AggregateDistributedGenerationA!(
Iq_neg = -Iq
I_r = real(complex(Ip_limited, Iq_neg) * exp(im * θ))
I_i = imag(complex(Ip_limited, Iq_neg) * exp(im * θ))
current_r[1] = I_r
current_i[1] = I_i
current_r[1] = I_r * base_power_ratio
current_i[1] = I_i * base_power_ratio
end

#Freq_Flag = 1
Expand All @@ -1134,6 +1137,7 @@ function _mdl_ode_AggregateDistributedGenerationA!(
t,
) where {T <: ACCEPTED_REAL_TYPES}
sys_ω = global_vars[GLOBAL_VAR_SYS_FREQ_INDEX]
Sbase = get_system_base_power(dynamic_device)
Vt = sqrt(voltage_r^2 + voltage_i^2)

#Obtain References (from wrapper and device)
Expand Down Expand Up @@ -1182,6 +1186,8 @@ function _mdl_ode_AggregateDistributedGenerationA!(
rrpwr = PSY.get_rrpwr(get_device(dynamic_device))
Tv = PSY.get_Tv(get_device(dynamic_device))
Iq_lim = PSY.get_Iq_lim(get_device(dynamic_device))
basepower = PSY.get_base_power(get_device(dynamic_device))
base_power_ratio = basepower / Sbase

#STATE Vmeas
_, dVmeas_dt = low_pass_mass_matrix(Vt, Vmeas, 1.0, T_rv)
Expand Down Expand Up @@ -1273,6 +1279,6 @@ function _mdl_ode_AggregateDistributedGenerationA!(
Iq_neg = -Iq
I_r = real(complex(Ip_limited, Iq_neg) * exp(im * θ))
I_i = imag(complex(Ip_limited, Iq_neg) * exp(im * θ))
current_r[1] = I_r
current_i[1] = I_i
current_r[1] = I_r * base_power_ratio
current_i[1] = I_i * base_power_ratio
end
112 changes: 112 additions & 0 deletions src/post_processing/post_proc_generator.jl
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Original file line number Diff line number Diff line change
@@ -1,3 +1,22 @@
"""
Default function to compute output current.
Returns an error

"""
function compute_output_current(
::SimulationResults,
dynamic_device::I,
::Vector{Float64},
::Vector{Float64},
::Union{Nothing, Float64},
) where {I <: PSY.DynamicInjection}

#Return error
error(
"Output current for device type $(typeof(dynamic_device)) is not implemented yet.",
)
end

"""
Function to obtain the output current time series of a Dynamic Generator model out of the DAE Solution. It receives the simulation inputs,
the dynamic device and bus voltage. It is dispatched for device type to compute the specific current.
Expand Down Expand Up @@ -30,6 +49,99 @@ function compute_output_current(
)
end

"""
Function to obtain the output current time series of a AggregateDistributedGenerationA (DERA) model out of the DAE Solution.
It receives the simulation inputs, the dynamic device and bus voltage.

"""
function compute_output_current(
res::SimulationResults,
dynamic_device::PSY.AggregateDistributedGenerationA,
V_R::Vector{Float64},
V_I::Vector{Float64},
dt::Union{Nothing, Float64},
)

#Obtain Data
sys = get_system(res)
Sbase = PSY.get_base_power(sys)
basepower = PSY.get_base_power(dynamic_device)
base_power_ratio = basepower / Sbase
Freq_Flag = PSY.get_Freq_Flag(dynamic_device)
name = PSY.get_name(dynamic_device)
if Freq_Flag == 1
_, Pord = post_proc_state_series(res, (name, :Pord), dt)
_, dPord = post_proc_state_series(res, (name, :dPord), dt)
Tpord = PSY.get_Tpord(dynamic_device)
P_lim = PSY.get_P_lim(dynamic_device)
end

# Get states
θ = atan.(V_I ./ V_R)
ts, Ip = post_proc_state_series(res, (name, :Ip), dt)
ts, Iq = post_proc_state_series(res, (name, :Iq), dt)
_, Mult = post_proc_state_series(res, (name, :Mult), dt)
_, Vmeas = post_proc_state_series(res, (name, :Vmeas), dt)
Iq_neg = -Iq
Ip_cmd = Ip
Iq_cmd = Iq

# Get Params
Tg = PSY.get_Tg(dynamic_device)
rrpwr = PSY.get_rrpwr(dynamic_device)
P_ref = PSY.get_P_ref(dynamic_device)

I_R = similar(Ip)
I_I = similar(Iq)
for (ix, Ip_cmd_val) in enumerate(Ip_cmd)
Ip_min, Ip_max, _, _ = current_limit_logic(dynamic_device, Ip_cmd_val, Iq_cmd[ix])
if Ip[ix] >= 0
Rup = abs(rrpwr)
Rdown = -Inf
else
Rdown = -abs(rrpwr)
Rup = Inf
end
if Freq_Flag == 0
Ip_input = clamp(P_ref / max(Vmeas[ix], 0.01), Ip_min, Ip_max) * Mult[ix]
Ip_limited, _ = low_pass_nonwindup_ramp_limits(
Ip_input,
Ip[ix],
1.0,
Tg,
-Inf,
Inf,
Rdown,
Rup,
)
else
Pord_limited, _ = low_pass_nonwindup_mass_matrix(
dPord[ix],
Pord[ix],
1.0,
Tpord,
P_lim[:min],
P_lim[:max],
)
Ip_input = clamp(Pord_limited / max(Vmeas[ix], 0.01), Ip_min, Ip_max) * Mult[ix]
Ip_limited, _ = low_pass_nonwindup_ramp_limits(
Ip_input,
Ip[ix],
1.0,
Tg,
-Inf,
Inf,
Rdown,
Rup,
)
end
I_R[ix] = real(complex(Ip_limited, Iq_neg[ix]) * exp(im * θ[ix])) * base_power_ratio
I_I[ix] = imag(complex(Ip_limited, Iq_neg[ix]) * exp(im * θ[ix])) * base_power_ratio
end

return ts, I_R, I_I
end

"""
Function to obtain the field current time series of a Dynamic Generator model out of the DAE Solution. It receives the simulation inputs,
the dynamic device and bus voltage. It is dispatched for device type to compute the specific current.
Expand Down
2 changes: 2 additions & 0 deletions test/test_case42_dera.jl
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Expand Up @@ -79,6 +79,7 @@ function test_dera_residual(freqflag_value, csv_file, init_cond, eigs_value)
t_psid = get_voltage_angle_series(results, 102)[1]
θ_psid = get_voltage_angle_series(results, 102)[2]
V_psid = get_voltage_magnitude_series(results, 102)[2]
power = get_activepower_series(results, "generator-102-1")

M = get_csv_data(csv_file)
t_psse, V_psse = clean_extra_timestep!(M[:, 1], M[:, 2])
Expand Down Expand Up @@ -143,6 +144,7 @@ function test_dera_massmatrix(freqflag_value, csv_file, init_cond, eigs_value)
t_psid = get_voltage_angle_series(results, 102)[1]
θ_psid = get_voltage_angle_series(results, 102)[2]
V_psid = get_voltage_magnitude_series(results, 102)[2]
power = get_activepower_series(results, "generator-102-1")

M = get_csv_data(csv_file)
t_psse, V_psse = clean_extra_timestep!(M[:, 1], M[:, 2])
Expand Down