Secondary battery controlling apparatus and controlling method

• US 8,471,528 B2
• Filed: 10/02/2008
• Issued: 06/25/2013
• Est. Priority Date: 08/04/2008
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Toba, Koji, Ogita, Yoshihiro, Nishi, Akinori, Ichikawa, Ryoichi, Tanaka, Mari, Kobayashi, Takenori
• Primary Examiner(s): Tso, Edward
• Assistant Examiner(s): BOATENG, ALEXIS ASIEDUA
• Application Number:
  US12/602,219
• Publication Number:
  US 20100187907A1
• Time in Patent Office: 1,727 Days
• Field of Search: 320/128, 320/127, 320/134, 320/135, 320/136, 320/148, 320/160, 320/161, 320/162, 324/425, 324/426
• US Class Current: 320/128
• CPC Class Codes: H02J 2300/20 The dispersed energy generation being of renewable origin
• CPC Class Codes: H02J 3/32 using batteries with converting means
• CPC Class Codes: H02J 3/381 Dispersed generators
• CPC Class Codes: H02J 3/466 Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
• CPC Class Codes: Y02E 70/30 Systems combining energy storage with energy generation of non-fossil origin
• CPC Class Codes: Y02P 80/14 District level solutions, i.e. local energy networks

Abstract

To provide a secondary battery controlling apparatus and a controlling method that can keep a storage amount of a secondary battery used for supply and demand control of a power system not close to 100% or 0%. The present invention is a power supply and demand controlling apparatus of a small-scaled power system 1 including distributed power supplies 31, 32, . . . 3n including a secondary battery and a controlling method, wherein the secondary battery controlling apparatus includes a power generation planning part 6 calculating a planned output value of the distributed power supply based on a past load power and output data including track record data of a power generation output, a planned storage amount estimating part 7 estimating a planned storage amount of the secondary battery from the planned output value of the secondary battery calculated at the power generation planning part, an actual output detecting part 8 measuring and detecting an actual output value of the secondary battery, an actual storage amount estimating part 9 estimating an actual storage amount from the actual output value of the secondary battery detected at the actual output detecting part, and a storage amount controlling part 10 controlling the actual storage amount back to the planned storage amount if there is a difference between the planned storage amount estimated at the planned storage amount estimating part and the actual storage amount estimated at the actual storage amount estimating part.

Claims

1. A secondary battery controlling apparatus comprising:

a power generation planning part calculating a planned output wattage value of a distributed power supply based on a past load power and track record data of a power generation output wattage;

a planned storage amount estimating part estimating a planned storage amount of the secondary battery from the planned output wattage value;

an actual output wattage detecting part detecting an actual output wattage value of the secondary battery;

an actual storage amount estimating part estimating an actual storage amount from the actual output wattage value of the secondary battery detected at the actual output wattage detecting part; and

a storage amount controlling part controlling the actual storage amount back to the planned storage amount if there is a difference between the planned storage amount and the actual storage amount,

wherein the storage amount controlling part includes;

a storage amount deviation estimating part calculating a difference between the planned storage amount and the actual storage amount;

a correction amount calculating part calculating an output wattage correction amount of the secondary battery necessary for eliminating the storage amount deviation calculated at the storage amount deviation estimating part; and

a secondary battery output wattage instructing part outputting a value obtained by correcting the planned output wattage value by the output wattage correction amount as a second battery output wattage instruction value.

2. The secondary battery controlling apparatus according to claim 1, wherein the storage amount controlling part comprises:

a correction period adjusting part changing a control period of the correction amount calculating part and the secondary battery output wattage instructing part depending on a storage amount deviation output wattage from the storage amount deviation estimating part.

3. The secondary battery controlling apparatus according to claim 2, wherein the correction period adjusting part comprises:

a change determination value setting function setting a determination reference for changing a correction period to any value depending on the storage amount deviation output wattage from the storage amount deviation estimating part.

4. A secondary battery controlling method comprising:

calculating a planned output wattage value of a distributed power supply based on a past load power and track record data of a power generation output wattage;

estimating a planned storage amount of the secondary battery from the planned output wattage value;

detecting an actual output wattage value of the secondary battery;

estimating an actual storage amount from the actual output wattage value of the secondary battery;

controlling the actual storage amount back to the planned storage amount if there is a difference between the planned storage amount and the actual storage amount;

calculating a difference between the planned storage amount and the actual storage amount;

calculating an output wattage correction amount of the secondary battery necessary for eliminating the storage amount deviation; and

outputting a value obtained by correcting the planned output wattage value by the output wattage correction amount as a second battery output wattage instruction value.