公开(公告)号：US10734812B2

公开(公告)日：2020-08-04

申请号：US15735657

申请日：2015-07-08

Applicant: NEC Corporation

Inventor： Alexander Viehweider ,  Koji Kudo

IPC: G05B19/042 ,  H02J3/38 ,  H02J3/32 ,  H02J3/00 ,  G06Q50/06

Abstract: A renewable power system according to the exemplary embodiment includes a renewable power plant (121), a controllable plant (123) and an energy management system (128) which keeps an energy schedule within a certain tolerance in the next k (an integer greater than or equal to 1) steps by using a method that includes an optimization algorithm for a total power output shape within a step, and schedule changing algorithm for changing the energy schedule after the next k steps to keep a needed capacity of the plant regarding power and energy small. By keeping the energy schedule within a certain range for a renewable power plant combined with controllable plant, it is possible to keep the needed power and energy capacity of controllable plant small and to guarantee favorable total power output shape.

公开(公告)号：US10389165B2

公开(公告)日：2019-08-20

申请号：US15529132

申请日：2015-11-18

Applicant: NEC Corporation

Inventor： Ryo Hashimoto ,  Hitoshi Yano ,  Hisato Sakuma ,  Koji Kudo ,  Alexander Viehweider

IPC: H02J7/00 ,  H02J7/04 ,  G06Q50/06 ,  H02J3/32 ,  H02J9/06

Abstract: An object of the present invention is to set a demand schedule for performing highly efficient demand-supply adjustment of electric power, to deal with electric power demand. To achieve the object, an energy management apparatus of the present invention is an energy management apparatus for performing demand-supply adjustment of electric power by use of a plurality of chargeable and dischargeable energy storage devices, comprising: a plan management means for acquiring a variation of a load of an electric power grid predicted during a target period; and a demand variation setting means for setting a value of an operational electric energy for charging and discharging of each of the plurality of energy storage devices to be a value corresponding to a halt state or a value between a minimum rated output and a maximum rated output, in a manner to make a difference between maximum and minimum values of the load be smaller than a difference that is predicted, by operation of the plurality of energy storage devices.

公开(公告)号：US10056757B2

公开(公告)日：2018-08-21

申请号：US15021408

申请日：2014-09-11

Applicant: NEC Corporation

Inventor： Hisato Sakuma ,  Koji Kudo ,  Hitoshi Yano ,  Ryo Hashimoto ,  Eisuke Saneyoshi ,  Takahiro Toizumi ,  Kosuke Homma ,  Alexander Viehweider ,  Katsuya Suzuki

IPC: H02J1/10 ,  H02J3/32 ,  H02J13/00 ,  H02J7/00

CPC classification number: H02J3/32 ,  H02J7/0047 ,  H02J7/0068 ,  H02J7/007 ,  H02J13/0006 ,  H02J13/0017 ,  Y02B70/3266 ,  Y02E60/722 ,  Y02E70/30 ,  Y04S10/14 ,  Y04S20/242

Abstract: A control device for controlling the operation of a supply and demand adjustment device that is connected to a power grid includes: detection means for detecting the state of the supply and demand adjustment device; communication means for transmitting the detection result of the detection means to an external device and receiving from the external device operation control information for controlling the operation of the supply and demand adjustment device; comprehension means for receiving and comprehending an adjustment power amount transmitted by bidirectional communication or one-way communication; and control means for, based on the adjustment power amount and the operation control information, controlling the operation of the supply and demand adjustment device.

公开(公告)号：US10003197B2

公开(公告)日：2018-06-19

申请号：US15129114

申请日：2014-03-27

Applicant: NEC CORPORATION

Inventor： Alexander Viehweider ,  Koji Kudo

IPC: H02J3/38 ,  H02J7/00 ,  H02J3/00

CPC classification number: H02J3/382 ,  H02J3/00 ,  H02J3/38 ,  H02J3/381 ,  H02J3/383 ,  H02J3/386 ,  H02J7/0068 ,  H02J7/345 ,  H02J2003/003

Abstract: An energy management method for an energy supply system which includes at least an energy storage, a load and a generator with power dependent efficiency is provided. The method includes: calculating two time variant parameters indicating a discharge lower limit and an upper charge limit, respectively, of the energy storage, based on optimization using different kinds of prediction; and controlling, in a real time manner, charging and discharging of the energy storage and operation of the generator, with a certain priorities given to various power sources, such that state of charge of the energy storage is controlled within a region between the discharge lower limit and the upper charge limit. When a grid power is available, blackout duration probability function is predicted and used to calculate the discharge lower limit and the upper charge limit.