公开(公告)号：US11016455B2

公开(公告)日：2021-05-25

申请号：US16477174

申请日：2018-01-29

Applicant: SOUTHEAST UNIVERSITY

Inventor： Wei Gu ,  Shuai Lu ,  Guannan Lou ,  Jun Wang ,  Suyang Zhou

IPC: G05B19/042

Abstract: Disclosed is an integrated energy system operational optimization method considering thermal inertia of district heating networks and buildings, comprising the following steps. Step 10: respectively establish a district heating network model considering transmission delay and heat loss and a building model considering thermal storage capacity. Step 20: establish an integrated energy system optimization model consisting of a combined cooling, heat and power system model, the district heating network model and the building model. Step 30: solve the integrated energy system optimization model to obtain an optimal scheduling plan, control outputs of a gas turbine and a gas boiler per hour according to the optimal scheduling plan, and purchase electricity from a power grid and a wind power. According to the method, both the district heating network and buildings are included in a scheduling scope, so that the load adjustment with multiple degrees of freedom can be achieved.

公开(公告)号：US10756569B2

公开(公告)日：2020-08-25

申请号：US16107932

申请日：2018-08-21

Applicant: SOUTHEAST UNIVERSITY

Inventor： Wei Gu ,  Guannan Lou ,  Suyang Zhou ,  Zhi Wu ,  Ge Cao

IPC: H02J13/00 ,  H02J3/38 ,  H02M7/217 ,  H02J3/12 ,  G05B17/02 ,  H02M1/44

Abstract: A decentralized voltage control method for a microgrid based on nonlinear state observers, comprising the steps of step 10), establishing a large-signal model of distributed generations, a connection network and impedance-type loads in the microgrid; step 20), establishing a Luenberger-like nonlinear state observer for each distributed generation; step 30), estimating the dynamic characteristics of other distributed generations in real time based on the local measured values of each distributed generation; and step 40), implementing the decentralized voltage control based on the control requirements of reactive power sharing and voltage restoration. The control method realizes the voltage control of microgrid based on the decentralized state observers, which does not rely on communication transmission or remote measurement and avoids the adverse effects of communication latency and data drop-out on the control performance.

公开(公告)号：US10982861B2

公开(公告)日：2021-04-20

申请号：US16107958

申请日：2018-08-21

Applicant: SOUTHEAST UNIVERSITY

Inventor： Wei Gu ,  Chenyu Wu ,  Zhi Wu ,  Suyang Zhou ,  Ping Jiang

IPC: F24D19/10 ,  F24D3/02 ,  F24D3/10 ,  G05B17/02 ,  F24D12/02 ,  H02J3/46 ,  F24D13/00

Abstract: A CHP optimal dispatching model is a mixed integer programming model and is used for a district heating system (DHS) comprising a heat source, a heating network and a heat load, and the heating network comprises a heat transmission network and a heat distribution network. A plurality of heating areas is divided, and one day is divided into a plurality of time periods; the heat transmission loss of the heat distribution network is omitted, and a heat transmission network model taking transmission time delay of the heating network into consideration is established according to the heat transmission network; a terminal heat consumer model capable of reflecting indoor temperature is established; and a combined optimal dispatching model comprising conventional generators, wind power units, CHP units, electric boilers and heat storage tanks is established.