Title:
CONTROLLING METHOD FOR OPTIMUM EFFICIENCY OF THERMAL POWER PLANT
Document Type and Number:
Japanese Patent JPS5843004
Kind Code:
A
Abstract:
PURPOSE:To always keep the plant efficiency at the highest level, by deciding the initial trial point group of the vacuum degree of a steam condenser in consideration of at least one of the upper limit of curculating water flow rate, the lower limit of said flow rate and the upper limit of increase of circulating water temperature. CONSTITUTION:A calculation is carried out for estimation of the model normative efficiency by means of a plant model 240 for calculation of efficiency which is incorporated in a control system 200. A maximum efficiency searching means 230 for the system 200 delivers the trial operation quantity 9 to the model 240 before deciding the optimum operation quantity. Thus the corresponding plant efficiency 10 is obtained. The above-mentioned procedure is repeated to search the maximum efficiency point. In this case, the initial trial point group is decided for the vacuum degree of a steam condenser by means of the model 240 in consideration of at least one of the upper limit of circulating water flow rate obtained previously, the lower limit of said flow rate and the upper limit of increase of circulating water temperature.
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Inventors:
MATSUMOTO HIROSHI
SATOU YOSHIO
SATOU YOSHIO
Application Number:
JP13974281A
Publication Date:
March 12, 1983
Filing Date:
September 07, 1981
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G05B13/00; F01K13/02; G05B13/02; (IPC1-7): G05B13/02
Domestic Patent References:
| JPS5213579A | 1977-02-01 | |||
| JPS5319387A | 1978-02-22 | |||
| JPS50112638A | 1975-09-04 |
Attorney, Agent or Firm:
Katsuo Ogawa