LpProblem Module

Module containing PowerGAMA LpProblem class

class powergama.LpProblemPyomo.LpProblem(grid, lossmethod=0)

Class containing problem definition as a LP problem, and function calls to solve the problem

Methods

setProgressBar(value)	Specify how to show simulation progress
solve(results[, solver, solver_path, …])	Solve LP problem for each time step in the time range

setProgressBar(value)

Specify how to show simulation progress

Parameters:

value : string

‘fancy’ or ‘default’

solve(results, solver='cbc', solver_path=None, warmstart=False, savefiles=False, aclossmultiplier=1, dclossmultiplier=1, logfile='lpsolver_log.txt')

Solve LP problem for each time step in the time range

Parameters:

results : Results

PowerGAMA Results object reference

solver : string (optional)

name of solver to use (“cbc” or “gurobi”). Gurobi uses python interface, whilst CBC uses command line executable

solver_path :string (optional, only relevant for cbc)

path for solver executable

warmstart : Boolean

Use warmstart option (only some solvers, e.g. gurobi)

savefiles : Boolean

Save Pyomo model file and LP problem MPS file for each timestep This may be useful for debugging.

aclossmultiplier : float

Multiplier factor to scale computed AC losses, used with method 1

dclossmultiplier : float

Multiplier factor to scale computed DC losses, used with method 1

logfile : string

Name of log file for LP solver. Will keep only last iteration

Returns:

results : Results

PowerGAMA Results object reference