| 摘要 |
A control method of a plant for the micro-generation of distributed energy is disclosed, wherein the plant is installed in a local unit, is connected to an electric network of an external supplier and comprises at least generation resources comprising of generators of electric and thermal energy, among which at least a co-generator in the form of fuel cell and photovoltaic panels, and energy storage resources, among which at least an electric battery and a thermal accumulator (boiler), wherein the following steps are provided:
acquiring status variables comprising at least an adjustment of said fuel cell ( M ( k )), a loading status of said battery ( S ( k )) and a status (H(k)) of said thermal accumulator,
chasing a time sequence (k=1, ...N) of reference values comprising at least, from an electric production from photovoltaic panels (P FV (k)), an electric load (L EL (k)) and a thermal load (L TH (k)) demanded by a user, through a predictive model defined for minimising a cost function which includes a total electric power ( P EL ( k )) and a total thermal power ( P TH ( k )) produced by said generators of electric and thermal energy, so as to obtain a sequence of optimised variables, comprising at least adjustment/modulation of said fuel cell (M REF ), power delivered by said thermal accumulator P H ( k ) and a slack variable µ( k ) to be used as input variables for said fuel cell and said electric battery
and wherein said status variables ( M ( k ), S ( k ), H ( k )) are put in relationship with the relative input variables ( M REF ( k ), P BATT ( k )) through discrete-time dynamic models defined as: M k + 1 = e - T s Ä M k + 1 - e - T s Ä M REF k S k + 1 = S k - k s T s P BATT k H k + 1 = e - l H T s H k + k H l H e - l H T s - 1 P H k
where T s is a sampling time, Ä is a time constant of said fuel cell, k s is a parameter of the loading and unloading dynamics of said electric battery, k H and l H are parameters of the dynamics of said thermal accumulator. |
