Method, computer equipment and a program for planning of electric power generation and electric power trade

• US 20040181491A1
• Filed: 10/30/2003
• Published: 09/16/2004
• Est. Priority Date: 03/12/2003
• Status: Abandoned Application

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Harada, Yasushi, Tsurugai, Mitsuo, Sawa, Toshiyuki, Sato, Yasuo, Tamura, Shigeru
• Application Number:
  US10/697,451
• Publication Number:
  US 20040181491A1
• Time in Patent Office: Days
• US Class Current: 705/63
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: H02J 2203/20 Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
• CPC Class Codes: H02J 3/004 Generation forecast, e.g. methods or systems for forecasting future energy generation
• CPC Class Codes: H02J 3/008 involving trading of energy or energy transmission rights
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 10/50 Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
• CPC Class Codes: Y04S 40/20 Information technology specific aspects, e.g. CAD, simulation, modelling, system security
• CPC Class Codes: Y04S 50/10 Energy trading, including energy flowing from end-user application to grid

Abstract

A method, equipment and a program that present uncertain factors such as the demand variation of electric power, electric power unit price and fuel unit price in stochastic models, provide the analytical means of the correlation between return and risk by which the results can be quantitatively given, have GUI means to do trail and error evaluation of the combinations of various conditions regarding to the interrupt operation plan and electric power trade contract plan and have an amendment means by which the amendment of plans is cooperated with the analytical means of the correlation between return and the risk has been proposed. The system enables to comprehend the correlation between returns and risk that the present operating schedule involves.

Claims

1. In a planning system that makes plans of electric power generation and electric power trade, a computer implemented method for an electric power generating plan and an electrical power trading plan comprising the steps of:

determining a stochastic distribution of uncertain factors included in an expected balance which is resulted from said electric power generating plan and said electric power trading plan, and

presenting said stochastic distribution of uncertain factors in a time-series form.

2. The computer implemented method of claim 1, wherein said electric power generating plan and said electric power trading plan are presented in time-series forms

3. The computer implemented method of claim 1, wherein said uncertainty factors are variances of electric power demand and prediction errors caused by annulment of electric power trading plan.

4. The computer implemented method of claim 1, wherein said uncertainty factors are variances of unit price of fuel to be used for power generators.

5. The computer implemented method of claim 1, wherein said uncertainty factors are variances of unit price of electric power to be traded.

6. The computer implemented method of claim 2, wherein said electric power generating plan and the electric power trading plan and said stochastic distribution are presented in a first chart that gives a time axis for an axis and generator power output, interruption term of power supply regarding to maintenance inspection, a term of output restriction and contracted electric power for the other axis and in a second chart that gives a time axis for an axis and expected value and variance of said stochastic distribution for another axis.

7. The computer implemented method of claim 6 comprising the steps of:

receiving designation of an area of blocks where power generator output is presented in said first chart thereof, and

presenting power generation volume, and power generator start stop term, in date output pattern and information of price variation of said fuel to be used.

8. The computer implemented method of claim 6 comprising the steps of:

receiving a designation of an area of blocks where an interruption term of power supply regarding to a maintenance inspection term and a restriction term of generator output is presented in said first step thereof, and

presenting said interruption term of power supply regarding to maintenance inspection, said restriction term of generator output or a generator output to be suppressed.

9. The computer implemented method of claim 6 comprising the steps of:

receiving designation of an area of blocks where in-trade electric power is presented in said fist chart thereof, and

presenting trade unit price, trade volume and in-date supply pattern.

10. The computer implemented method of claim 6 comprising the steps of:

receiving designation of an area of blocks where in-trade electric power is presented thereof, and

presenting expected values and variances of both unit price and volume of electric power to be traded for a term that said designation appoints.

11. The computer implemented method of claim 6 comprising the steps of:

receiving a term to be specified in said time axis, receiving a selection of an expanded scale or an shrunk scale of date or time zone of said term to be presented, and

presenting a chart composed on a time axis defined in said expanded scale or said shrunk scale.

12. The computer implemented method of claim 6 comprising the steps of:

receiving said generator output, a term to be specified in said time axis, said interruption term of power supply regarding to maintenance inspection, said term of output restriction and

determining a new said stochastic distribution, and

presenting the said new stochastic distribution in a time-series form.

13. In a planning computer equipment that makes electric power generating plan and electric power trading plan, said computer equipment comprising the devices of:

determining a stochastic distribution due to uncertain factors regarding to a balance caused by electric power generation and electric power trade, and

presenting said stochastic distribution in a time-series form.

14. In a computer program that has a function for planning computer equipment that makes electric power generating plan and electric power trading plan, said computer program comprising the program modules of:

determining a stochastic distribution due to uncertain factors regarding to a balance caused by electric power generation and electric power trade, and

presenting said stochastic distribution in a time-series form.

15. A computer readable recording medium to store and retrieve said program defined in claim 14.