US 12,221,904 B2
Speed regulation system of a turbine and relevant control method
Roberto Bini, Brescia (IT); and Mario Gaia, Brescia (IT)
Assigned to Turboden S.p.A., Brescia (IT)
Appl. No. 18/573,658
Filed by TURBODEN S.P.A., Brescia (IT)
PCT Filed Jul. 13, 2022, PCT No. PCT/IB2022/056450
§ 371(c)(1), (2) Date Dec. 22, 2023,
PCT Pub. No. WO2023/002305, PCT Pub. Date Jan. 26, 2023.
Claims priority of application No. 102021000019061 (IT), filed on Jul. 20, 2021.
Prior Publication US 2024/0301807 A1, Sep. 12, 2024
Int. Cl. F01K 13/02 (2006.01); F01D 15/10 (2006.01); F01K 25/08 (2006.01); F02C 1/10 (2006.01); F02C 9/16 (2006.01)
CPC F01K 13/02 (2013.01) [F01D 15/10 (2013.01); F01K 25/08 (2013.01); F02C 1/10 (2013.01); F02C 9/16 (2013.01); F05D 2220/31 (2013.01); F05D 2220/76 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A regulation system (20) of an expansion turbine (3) speed in an isolated grid, comprising:
an organic Rankine cycle system (10) comprising at least one expansion turbine (3), said expansion turbine being provided with at least one inlet valve (AV) and at least one by-pass valve (BV) and mechanically connected to a generator (4) of electricity;
a control unit (21) configured to control processes of the regulation system (20);
an electric accumulation system (22);
a dissipative electric brake (24);
a control for interruptible electrical loads (25);
a system for modulating heat generation or recovery of the organic Rankine cycle system;
wherein the control unit (21) is configured to regulate the speed of the expansion turbine (3) and the frequency of the electrical energy produced by the generator (4) operating according to a predetermined management logic on the at least one inlet valve (AV), the at least one by-pass valve (BV), the electrical accumulation system (22), the dissipative electric brake (24), the control of interruptible electrical loads (25) and the system for modulating the heat generation or recovery of the organic Rankine cycle system; and
wherein the predetermined management logic includes a primary regulation that takes place within 10 s for guaranteeing the stability of regulation of the grid frequencies and a secondary regulation that takes place in a time between 30 s and 30 min for optimizing the energy management in the isolated grid.