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dcp.jl
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dcp.jl
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"""
Creates lossy converter model between AC and DC grid, assuming U_i is approximatley 1 numerically
```
pconv_ac[i] + pconv_dc[i] == a + b*pconv_ac
```
"""
function constraint_converter_losses(pm::_PM.AbstractDCPModel, n::Int, i::Int, a, b, c, plmax)
pconv_ac = _PM.var(pm, n, :pconv_ac, i)
pconv_dc = _PM.var(pm, n, :pconv_dc, i)
v = 1 #pu, assumption to approximate current
cm_conv_ac = pconv_ac/v # can actually be negative, not a very nice model...
if pm.setting["conv_losses_mp"] == true
JuMP.@constraint(pm.model, pconv_ac + pconv_dc == a + b*cm_conv_ac)
else
JuMP.@constraint(pm.model, pconv_ac + pconv_dc >= a + b*cm_conv_ac)
JuMP.@constraint(pm.model, pconv_ac + pconv_dc >= (a - b*cm_conv_ac))
JuMP.@constraint(pm.model, pconv_ac + pconv_dc <= plmax)
end
end
"""
Converter transformer constraints
```
p_tf_fr == -btf*(v^2)/tm*(va-vaf)
p_tf_to == -btf*(v^2)/tm*(vaf-va)
```
"""
function constraint_conv_transformer(pm::_PM.AbstractDCPModel, n::Int, i::Int, rtf, xtf, acbus, tm, transformer)
ptf_fr = _PM.var(pm, n, :pconv_tf_fr, i)
ptf_to = _PM.var(pm, n, :pconv_tf_to, i)
vaf = _PM.var(pm, n, :vaf, i)
va = _PM.var(pm, n, :va, acbus)
if transformer
btf = imag(1/(im*xtf)) # classic DC approach to obtain susceptance form
v = 1 # pu, assumption DC approximation
JuMP.@constraint(pm.model, ptf_fr == -btf*(v^2)/tm*(va-vaf))
JuMP.@constraint(pm.model, ptf_to == -btf*(v^2)/tm*(vaf-va))
else
JuMP.@constraint(pm.model, va == vaf)
JuMP.@constraint(pm.model, ptf_fr + ptf_to == 0)
end
end
"""
Converter reactor constraints
```
p_pr_fr == -bc*(v^2)*(vaf-vac)
pconv_ac == -bc*(v^2)*(vac-vaf)
```
"""
function constraint_conv_reactor(pm::_PM.AbstractDCPModel, n::Int, i::Int, rc, xc, reactor)
pconv_ac = _PM.var(pm, n, :pconv_ac, i)
ppr_to = - pconv_ac
ppr_fr = _PM.var(pm, n, :pconv_pr_fr, i)
vaf = _PM.var(pm, n, :vaf, i)
vac = _PM.var(pm, n, :vac, i)
if reactor
bc = imag(1/(im*xc))
v = 1 # pu, assumption DC approximation
JuMP.@constraint(pm.model, ppr_fr == -bc*(v^2)*(vaf-vac))
JuMP.@constraint(pm.model, ppr_to == -bc*(v^2)*(vac-vaf))
else
JuMP.@constraint(pm.model, vac == vaf)
JuMP.@constraint(pm.model, ppr_fr + ppr_to == 0)
end
end
"""
Converter filter constraints (no active power losses)
```
p_pr_fr + p_tf_to == 0
```
"""
function constraint_conv_filter(pm::_PM.AbstractDCPModel, n::Int, i::Int, bv, filter)
ppr_fr = _PM.var(pm, n, :pconv_pr_fr, i)
ptf_to = _PM.var(pm, n, :pconv_tf_to, i)
JuMP.@constraint(pm.model, ppr_fr + ptf_to == 0 )
end
"""
Converter current constraint (not applicable)
```
```
"""
function constraint_converter_current(pm::_PM.AbstractDCPModel, n::Int, i::Int, Umax, Imax)
# not used
end
function variable_dc_converter(pm::_PM.AbstractDCPModel; kwargs...)
variable_converter_active_power(pm; kwargs...)
variable_dcside_power(pm; kwargs...)
variable_converter_filter_voltage(pm; kwargs...)
variable_converter_internal_voltage(pm; kwargs...)
variable_converter_to_grid_active_power(pm; kwargs...)
variable_conv_transformer_active_power_to(pm; kwargs...)
variable_conv_reactor_active_power_from(pm; kwargs...)
end
function variable_converter_filter_voltage(pm::_PM.AbstractDCPModel; kwargs...)
variable_converter_filter_voltage_angle(pm; kwargs...)
end
function variable_converter_internal_voltage(pm::_PM.AbstractDCPModel; kwargs...)
variable_converter_internal_voltage_angle(pm; kwargs...)
end
"""
Converter reactive power setpoint constraint (PF only, not applicable)
```
```
"""
function constraint_reactive_conv_setpoint(pm::_PM.AbstractDCPModel, n::Int, i, qconv)
end
"""
Converter firing angle constraint (not applicable)
```
```
"""
function constraint_conv_firing_angle(pm::_PM.AbstractDCPModel, n::Int, i::Int, S, P1, Q1, P2, Q2)
end
"""
Converter droop constraint (not applicable)
```
```
"""
function constraint_dc_droop_control(pm::_PM.AbstractDCPModel, n::Int, i::Int, busdc_i, vref_dc, pref_dc, k_droop)
end
######################## TNEP Constraints #################
"""
Creates lossy converter model between AC and DC grid, assuming U_i is approximatley 1 numerically
```
pconv_ac[i] + pconv_dc[i] == a + b*pconv_ac
```
"""
function constraint_converter_losses_ne(pm::_PM.AbstractDCPModel, n::Int, i::Int, a, b, c, plmax)
pconv_ac = _PM.var(pm, n, :pconv_ac_ne)[i]
pconv_dc = _PM.var(pm, n, :pconv_dc_ne)[i]
z = _PM.var(pm, n, :conv_ne)[i]
v = 1 #pu, assumption to approximate current
cm_conv_ac = pconv_ac/v # can actually be negative, not a very nice model...
# binary to omit the no load losses, power omitted via binary constraint in varible bounds
if pm.setting["conv_losses_mp"] == true
JuMP.@constraint(pm.model, pconv_ac + pconv_dc == a * z + b*cm_conv_ac )
else
JuMP.@constraint(pm.model, pconv_ac + pconv_dc >= a * z + b*cm_conv_ac )
JuMP.@constraint(pm.model, pconv_ac + pconv_dc >= a * z - b*cm_conv_ac )
JuMP.@constraint(pm.model, pconv_ac + pconv_dc <= plmax)
end
end
function constraint_conv_transformer_ne(pm::_PM.AbstractDCPModel, n::Int, i::Int, rtf, xtf, acbus, tm, transformer)
ptf_fr = _PM.var(pm, n, :pconv_tf_fr_ne, i)
ptf_to = _PM.var(pm, n, :pconv_tf_to_ne, i)
#filter voltage angle
vaf = _PM.var(pm, n, :vaf_ne, i)
#acbus voltage angle
va = _PM.var(pm, n, :va, acbus)
va_du = _PM.var(pm, n, :va_du, i)
JuMP.set_upper_bound(va, 2*pi)
JuMP.set_lower_bound(va, -2*pi)
z = _PM.var(pm, n, :conv_ne, i)
if transformer
btf = imag(1/(im*xtf)) # classic DC approach to obtain susceptance form
v = 1 # pu, assumption DC approximation
JuMP.@constraint(pm.model, ptf_fr == -btf*(v^2)/tm*(va_du-vaf))
JuMP.@constraint(pm.model, ptf_to == -btf*(v^2)/tm*(vaf-va_du))
else
JuMP.@constraint(pm.model, va_du == vaf)
JuMP.@constraint(pm.model, ptf_fr + ptf_to == 0)
end
# relaxation_variable_on_off(pm.model, va, va_du, z)
_IM.relaxation_equality_on_off(pm.model, va, va_du, z)
end
#
function constraint_conv_reactor_ne(pm::_PM.AbstractDCPModel, n::Int, i::Int, rc, xc, reactor)
pconv_ac = _PM.var(pm, n, :pconv_ac_ne, i)
ppr_to = - pconv_ac
ppr_fr = _PM.var(pm, n, :pconv_pr_fr_ne, i)
#filter voltage angle
vaf = _PM.var(pm, n, :vaf_ne, i)
vaf_du = _PM.var(pm, n, :vaf_du, i)
#converter voltage angle
vac = _PM.var(pm, n, :vac_ne, i)
vac_du = _PM.var(pm, n, :vac_du, i)
z = _PM.var(pm, n, :conv_ne)[i]
if reactor
bc = imag(1/(im*xc))
v = 1 # pu, assumption DC approximation
JuMP.@constraint(pm.model, ppr_fr == -bc*(v^2)*(vaf_du-vac_du))
JuMP.@constraint(pm.model, ppr_to == -bc*(v^2)*(vac_du-vaf_du))
else
JuMP.@constraint(pm.model, vac_du == vaf_du)
JuMP.@constraint(pm.model, ppr_fr + ppr_to == 0)
end
_IM.relaxation_equality_on_off(pm.model, vaf, vaf_du, z)
_IM.relaxation_equality_on_off(pm.model, vac, vac_du, z)
end
#
function constraint_conv_filter_ne(pm::_PM.AbstractDCPModel, n::Int, i::Int, bv, filter)
ppr_fr = _PM.var(pm, n, :pconv_pr_fr_ne, i)
ptf_to = _PM.var(pm, n, :pconv_tf_to_ne, i)
JuMP.@constraint(pm.model, ppr_fr + ptf_to == 0 )
end
#
#
function constraint_converter_current_ne(pm::_PM.AbstractDCPModel, n::Int, i::Int, Umax, Imax)
# not used
end
#
#
function variable_dc_converter_ne(pm::_PM.AbstractDCPModel; kwargs...)
variable_converter_ne(pm; kwargs...)
variable_converter_active_power_ne(pm; kwargs...)
variable_dcside_power_ne(pm; kwargs...)
variable_converter_filter_voltage_ne(pm; kwargs...)
variable_converter_internal_voltage_ne(pm; kwargs...)
variable_converter_to_grid_active_power_ne(pm; kwargs...)
variable_conv_transformer_active_power_to_ne(pm; kwargs...)
variable_conv_reactor_active_power_from_ne(pm; kwargs...)
end
function variable_converter_filter_voltage_ne(pm::_PM.AbstractDCPModel; kwargs...)
variable_converter_filter_voltage_angle_ne(pm; kwargs...)
end
#
#
function variable_converter_internal_voltage_ne(pm::_PM.AbstractDCPModel; kwargs...)
variable_converter_internal_voltage_angle_ne(pm; kwargs...)
end
function variable_voltage_slack(pm::_PM.AbstractDCPModel; nw::Int=_PM.nw_id_default, bounded::Bool = true, report::Bool=true)
va_ne = _PM.var(pm, nw)[:va_du] = JuMP.@variable(pm.model,
[i in _PM.ids(pm, nw, :convdc_ne)], base_name="$(nw)_va_du",
lower_bound = -2*pi,
upper_bound = 2*pi,
start = 0,
)
report && _IM.sol_component_value(pm, _PM.pm_it_sym, nw, :convdc_ne, :va, _PM.ids(pm, nw, :convdc_ne), va_ne)
vaf_ne = _PM.var(pm, nw)[:vaf_du] = JuMP.@variable(pm.model,
[i in _PM.ids(pm, nw, :convdc_ne)], base_name="$(nw)_vaf_du",
lower_bound = -2*pi,
upper_bound = 2*pi,
start = 0,
)
report && _IM.sol_component_value(pm, _PM.pm_it_sym, nw, :convdc_ne, :vaf, _PM.ids(pm, nw, :convdc_ne), vaf_ne)
vac_ne = _PM.var(pm, nw)[:vac_du] = JuMP.@variable(pm.model,
[i in _PM.ids(pm, nw, :convdc_ne)], base_name="$(nw)_vac_du",
lower_bound = -2*pi,
upper_bound = 2*pi,
start = 0,
)
report && _IM.sol_component_value(pm, _PM.pm_it_sym, nw, :convdc_ne, :vac, _PM.ids(pm, nw, :convdc_ne), vac_ne)
end