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Power supply and demand guidance device and power supply and demand guidance method

A technology of power, supply and demand, applied in circuit devices, power network operating system integration, electrical components, etc., can solve problems such as uneconomical

Active Publication Date: 2019-12-03
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the amount of electricity purchased from the power company exceeds the contracted maximum amount, the iron-making company will pay a huge liquidated damages to the power company, and the power company needs to assume the above-mentioned power generation / transmission load, which is uneconomical for both parties

Method used

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  • Power supply and demand guidance device and power supply and demand guidance method
  • Power supply and demand guidance device and power supply and demand guidance method
  • Power supply and demand guidance device and power supply and demand guidance method

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Effect test

Embodiment

[0086] Next, refer to Figure 7 , to describe the effect of this embodiment. Figure 7 is said to have figure 1 It is a graph showing the actual value and forecast value of the total electric power of ironworks in the electric power network 101 described, and the change in the production volume of each manufacturing plant (A plant 104 and B plant 105 ). exist Figure 7 It can be seen from the coordinate diagram in the middle section and the coordinate diagram in the lower section that the production volumes of factory A 104 and factory B 105 increase sharply with time t-1 and t as the boundary. In the present embodiment, the amount of electric power is predicted by the electric power supply and demand guidance process during the time between the time t-1 and t.

[0087] In the conventional method, the electric power is estimated by extrapolating from the moving average of the total electric power of the previous actual results, such as Figure 7 As shown by the dotted line...

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Abstract

In the electric power supply and demand guidance device (200), the production plan acquisition part (221) obtains the production plan of the manufacturing plant belonging to the ironworks, and the power quantity forecasting part (222) calculates the time series forecast of each manufacturing plant based on the obtained production plan. For the estimated electric power of the electric power used by the factory, the estimated electric power of the whole ironworks is calculated by adding the calculated estimated electric power of each manufacturing plant, and the electric power generation purchase decision unit (223) is based on the estimated electric power of the entire ironworks and the predicted power of each manufacturing plant, determine the amount of self-generated power generated, the amount of purchased power purchased from the power company, and the production reduction ratio. The visualization department (225) compares the predicted power of each The time-series change of the overall forecasted power amount, generated power amount, purchased power amount, and production volume reduction rate is displayed on the monitor (263), and the alarm notification unit (224) issues an alarm notification on the content of production volume reduction.

Description

technical field [0001] The present invention relates to a power supply and demand guidance device and a power supply and demand guidance method for predicting the amount of power used in an ironworks. Background technique [0002] Conventionally, the large amount of electric power required for production at ironworks has been generated in-house (hereinafter, power generation) using power generation facilities located in the ironworks, and purchased from electric power companies (hereinafter, power purchase). to provide. Among them, regarding the electric power purchased from the electric power company, the maximum amount per predetermined time, for example, one hour, is determined based on the power purchase contract concluded between the iron making company and the electric power company. If the amount of electricity purchased from a power company exceeds the contracted maximum amount, the iron-making company will pay a huge liquidated damages to the power company, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00G05B19/418G06Q50/06H02J3/14H02J13/00
CPCG05B19/418G06Q50/06H02J3/00H02J3/14H02J13/00Y02P90/02Y02B70/3225Y04S20/222Y02P90/80Y04S20/00Y02B90/20H02J2310/54
Inventor 久山修司浅野一哉小室正之清水政志新井幸雄小野一哉
Owner JFE STEEL CORP
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