OPT_MODEL Constructor for optimization model class.
OM = OPT_MODEL
OM = OPT_MODEL(S)
This class implements the optimization model object used to encapsulate
a given optimization problem formulation. It allows for access to
optimization variables, constraints and costs in named blocks, keeping
track of the ordering and indexing of the blocks as variables,
constraints and costs are added to the problem.
Below are the list of available methods for use with the Opt Model class.
Please see the help on each individual method for more details:
Modify the OPF formulation by adding named blocks of constraints, costs
or variables:
add_constraints
add_costs
add_vars
Return the number of linear constraints, nonlinear constraints,
variables or cost rows, optionally for a single named block:
getN
Return the intial values, bounds and type for optimization variables:
getv
Build and return full set of linear constraints:
linear_constraints
Return index structure for variables, linear and nonlinear constraints
and costs:
get_idx
Build and return cost parameters and evaluate user-defined costs:
build_cost_params
get_cost_params
compute_cost
Save/retreive user data in the model object:
userdata
Display the object (called automatically when you omit the semicolon
at the command-line):
display
Return the value of an individual field:
get
Indentify variable, constraint or cost row indices:
describe_idx
The following is the structure of the data in the OPF model object.
Each field of .idx or .data is a struct whose field names are the names
of the corresponding blocks of vars, constraints or costs (found in
order in the corresponding .order field). The description next to these
fields gives the meaning of the value for each named sub-field.
E.g. om.var.data.v0.Pg contains a vector of initial values for the 'Pg'
block of variables.
om
.var - data for optimization variable sets that make up
the full optimization variable x
.idx
.i1 - starting index within x
.iN - ending index within x
.N - number of elements in this variable set
.N - total number of elements in x
.NS - number of variable sets or named blocks
.data - bounds and initial value data
.v0 - vector of initial values
.vl - vector of lower bounds
.vu - vector of upper bounds
.vt - scalar or vector of variable types
'C' = continuous
'I' = integer
'B' = binary
.order - struct array of names/indices for variable
blocks in the order they appear in x
.name - name of the block, e.g. Pg
.idx - indices for name, {2,3} => Pg(2,3)
.nln - data for nonlinear constraints that make up the
full set of nonlinear constraints ghn(x)
.idx
.i1 - starting index within ghn(x)
.iN - ending index within ghn(x)
.N - number of elements in this constraint set
.N - total number of elements in ghn(x)
.NS - number of nonlinear constraint sets or named blocks
.order - struct array of names/indices for nonlinear constraint
blocks in the order they appear in ghn(x)
.name - name of the block, e.g. Pmis
.idx - indices for name, {2,3} => Pmis(2,3)
.lin - data for linear constraints that make up the
full set of linear constraints ghl(x)
.idx
.i1 - starting index within ghl(x)
.iN - ending index within ghl(x)
.N - number of elements in this constraint set
.N - total number of elements in ghl(x)
.NS - number of linear constraint sets or named blocks
.data - data for l <= A*xx <= u linear constraints
.A - sparse linear constraint matrix
.l - left hand side vector, bounding A*x below
.u - right hand side vector, bounding A*x above
.vs - cell array of variable sets that define the xx for
this constraint block
.order - struct array of names/indices for linear constraint
blocks in the order they appear in ghl(x)
.name - name of the block, e.g. Pmis
.idx - indices for name, {2,3} => Pmis(2,3)
.cost - data for user-defined costs
.idx
.i1 - starting row index within full N matrix
.iN - ending row index within full N matrix
.N - number of rows in this cost block in full N matrix
.N - total number of rows in full N matrix
.NS - number of cost blocks
.data - data for each user-defined cost block
.N - see help for ADD_COSTS for details
.H - "
.Cw - "
.dd - "
.rr - "
.kk - "
.mm - "
.vs - cell array of variable sets that define xx for this
cost block, where the N for this block multiplies xx
.order - struct array of names/indices for cost blocks in the
order they appear in the rows of the full N matrix
.name - name of the block, e.g. R
.idx - indices for name, {2,3} => R(2,3)
.userdata - any user defined data added via USERDATA
.(user defined fields)0001 function om = opt_model(s) 0002 %OPT_MODEL Constructor for optimization model class. 0003 % OM = OPT_MODEL 0004 % OM = OPT_MODEL(S) 0005 % 0006 % This class implements the optimization model object used to encapsulate 0007 % a given optimization problem formulation. It allows for access to 0008 % optimization variables, constraints and costs in named blocks, keeping 0009 % track of the ordering and indexing of the blocks as variables, 0010 % constraints and costs are added to the problem. 0011 % 0012 % Below are the list of available methods for use with the Opt Model class. 0013 % Please see the help on each individual method for more details: 0014 % 0015 % Modify the OPF formulation by adding named blocks of constraints, costs 0016 % or variables: 0017 % add_constraints 0018 % add_costs 0019 % add_vars 0020 % 0021 % Return the number of linear constraints, nonlinear constraints, 0022 % variables or cost rows, optionally for a single named block: 0023 % getN 0024 % 0025 % Return the intial values, bounds and type for optimization variables: 0026 % getv 0027 % 0028 % Build and return full set of linear constraints: 0029 % linear_constraints 0030 % 0031 % Return index structure for variables, linear and nonlinear constraints 0032 % and costs: 0033 % get_idx 0034 % 0035 % Build and return cost parameters and evaluate user-defined costs: 0036 % build_cost_params 0037 % get_cost_params 0038 % compute_cost 0039 % 0040 % Save/retreive user data in the model object: 0041 % userdata 0042 % 0043 % Display the object (called automatically when you omit the semicolon 0044 % at the command-line): 0045 % display 0046 % 0047 % Return the value of an individual field: 0048 % get 0049 % 0050 % Indentify variable, constraint or cost row indices: 0051 % describe_idx 0052 % 0053 % The following is the structure of the data in the OPF model object. 0054 % Each field of .idx or .data is a struct whose field names are the names 0055 % of the corresponding blocks of vars, constraints or costs (found in 0056 % order in the corresponding .order field). The description next to these 0057 % fields gives the meaning of the value for each named sub-field. 0058 % E.g. om.var.data.v0.Pg contains a vector of initial values for the 'Pg' 0059 % block of variables. 0060 % 0061 % om 0062 % .var - data for optimization variable sets that make up 0063 % the full optimization variable x 0064 % .idx 0065 % .i1 - starting index within x 0066 % .iN - ending index within x 0067 % .N - number of elements in this variable set 0068 % .N - total number of elements in x 0069 % .NS - number of variable sets or named blocks 0070 % .data - bounds and initial value data 0071 % .v0 - vector of initial values 0072 % .vl - vector of lower bounds 0073 % .vu - vector of upper bounds 0074 % .vt - scalar or vector of variable types 0075 % 'C' = continuous 0076 % 'I' = integer 0077 % 'B' = binary 0078 % .order - struct array of names/indices for variable 0079 % blocks in the order they appear in x 0080 % .name - name of the block, e.g. Pg 0081 % .idx - indices for name, {2,3} => Pg(2,3) 0082 % .nln - data for nonlinear constraints that make up the 0083 % full set of nonlinear constraints ghn(x) 0084 % .idx 0085 % .i1 - starting index within ghn(x) 0086 % .iN - ending index within ghn(x) 0087 % .N - number of elements in this constraint set 0088 % .N - total number of elements in ghn(x) 0089 % .NS - number of nonlinear constraint sets or named blocks 0090 % .order - struct array of names/indices for nonlinear constraint 0091 % blocks in the order they appear in ghn(x) 0092 % .name - name of the block, e.g. Pmis 0093 % .idx - indices for name, {2,3} => Pmis(2,3) 0094 % .lin - data for linear constraints that make up the 0095 % full set of linear constraints ghl(x) 0096 % .idx 0097 % .i1 - starting index within ghl(x) 0098 % .iN - ending index within ghl(x) 0099 % .N - number of elements in this constraint set 0100 % .N - total number of elements in ghl(x) 0101 % .NS - number of linear constraint sets or named blocks 0102 % .data - data for l <= A*xx <= u linear constraints 0103 % .A - sparse linear constraint matrix 0104 % .l - left hand side vector, bounding A*x below 0105 % .u - right hand side vector, bounding A*x above 0106 % .vs - cell array of variable sets that define the xx for 0107 % this constraint block 0108 % .order - struct array of names/indices for linear constraint 0109 % blocks in the order they appear in ghl(x) 0110 % .name - name of the block, e.g. Pmis 0111 % .idx - indices for name, {2,3} => Pmis(2,3) 0112 % .cost - data for user-defined costs 0113 % .idx 0114 % .i1 - starting row index within full N matrix 0115 % .iN - ending row index within full N matrix 0116 % .N - number of rows in this cost block in full N matrix 0117 % .N - total number of rows in full N matrix 0118 % .NS - number of cost blocks 0119 % .data - data for each user-defined cost block 0120 % .N - see help for ADD_COSTS for details 0121 % .H - " 0122 % .Cw - " 0123 % .dd - " 0124 % .rr - " 0125 % .kk - " 0126 % .mm - " 0127 % .vs - cell array of variable sets that define xx for this 0128 % cost block, where the N for this block multiplies xx 0129 % .order - struct array of names/indices for cost blocks in the 0130 % order they appear in the rows of the full N matrix 0131 % .name - name of the block, e.g. R 0132 % .idx - indices for name, {2,3} => R(2,3) 0133 % .userdata - any user defined data added via USERDATA 0134 % .(user defined fields) 0135 0136 % MATPOWER 0137 % Copyright (c) 2008-2015 by Power System Engineering Research Center (PSERC) 0138 % by Ray Zimmerman, PSERC Cornell 0139 % 0140 % $Id: opt_model.m 2644 2015-03-11 19:34:22Z ray $ 0141 % 0142 % This file is part of MATPOWER. 0143 % Covered by the 3-clause BSD License (see LICENSE file for details). 0144 % See http://www.pserc.cornell.edu/matpower/ for more info. 0145 0146 es = struct(); 0147 if nargin == 0 0148 om.var.idx.i1 = es; 0149 om.var.idx.iN = es; 0150 om.var.idx.N = es; 0151 om.var.N = 0; 0152 om.var.NS = 0; 0153 om.var.order = struct('name', [], 'idx', []); 0154 om.var.data.v0 = es; 0155 om.var.data.vl = es; 0156 om.var.data.vu = es; 0157 om.var.data.vt = es; 0158 0159 om.nln.idx.i1 = es; 0160 om.nln.idx.iN = es; 0161 om.nln.idx.N = es; 0162 om.nln.N = 0; 0163 om.nln.NS = 0; 0164 om.nln.order = struct('name', [], 'idx', []); 0165 0166 om.lin.idx.i1 = es; 0167 om.lin.idx.iN = es; 0168 om.lin.idx.N = es; 0169 om.lin.N = 0; 0170 om.lin.NS = 0; 0171 om.lin.order = struct('name', [], 'idx', []); 0172 om.lin.data.A = es; 0173 om.lin.data.l = es; 0174 om.lin.data.u = es; 0175 om.lin.data.vs = es; 0176 0177 om.cost.idx.i1 = es; 0178 om.cost.idx.iN = es; 0179 om.cost.idx.N = es; 0180 om.cost.N = 0; 0181 om.cost.NS = 0; 0182 om.cost.order = struct('name', [], 'idx', []); 0183 om.cost.data.N = es; 0184 om.cost.data.H = es; 0185 om.cost.data.Cw = es; 0186 om.cost.data.dd = es; 0187 om.cost.data.rh = es; 0188 om.cost.data.kk = es; 0189 om.cost.data.mm = es; 0190 om.cost.data.vs = es; 0191 om.cost.params = es; 0192 0193 om.userdata = es; 0194 0195 om = class(om, 'opt_model'); 0196 elseif isa(s,'opt_model') 0197 om = s; 0198 elseif isfield(s, 'var') && isfield(s, 'nln') && ... 0199 isfield(s, 'lin') && isfield(s, 'cost') && isfield(s, 'userdata') 0200 om = class(s, 'opt_model'); 0201 else 0202 error('@opt_model/opt_model: input must be an OPT_MODEL object or struct with corresponding fields'); 0203 end