Unified distinguishing method for economic operation indexes of power transmission line, transformer and motor
A transmission line and economical operation technology, applied in the direction of instruments, electrical digital data processing, special data processing applications, etc., can solve the problems of lack of uniformity in the economical operation indicators of electric motors
Inactive Publication Date: 2013-01-16
STATE GRID ANHUI ELECTRIC POWER CO LTD
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[0003] The technical problem to be solved by the present invention is to provide a unified identification method for the economic operation indicators of transmission lines, transformers and motors, so as to solve the problem of lack of uniformity in the existing transmission lines, transformers and motor economic operation indicators
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[0111] The parameters of SH11 series transformers are shown in Table 1. The current peak load is 700KW, the power factor is 0.90, the annual maximum load loss hours is 5000 hours, and the active power price is 0.5 yuan / kwh. Choose a transformer with a reasonable capacity according to the economic load factor, and Make economic comparisons.
[0112] Table 1 SH11 series transformer parameters
[0113]
[0114] According to formula (10), the transformer parameters of 1000kVA, 1250kVA and 1600kVA capacity are substituted into the corresponding economic load factor and the transformer capacity that should be selected in the theoretical sense. The calculation results are shown in Table 2:
[0115] Table 2 According to β B，opt Various transformers selected
[0116]
[0117] From the analysis in Table 2, it can be seen that the transformer capacity selected according to the optimal load rate will be a reasonable choice when the difference is not much different from the assumpt...
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The invention discloses a unified distinguishing method for economic operation indexes of a power transmission line, a transformer and a motor. An economic load coefficient serves as a distinguishing standard of the economic operation indexes of the power transmission line, the transformer and the motor, and formulae of the economic operation indexes of the power transmission line, the transformer and the motor are unified into an expression in a consistent format. Economic measurement indexes of the power transmission line, the transformer and the motor are unified into the economic load coefficient, the unified formula is consistent in structure, the unity of the economic measurement indexes is ensured, the economic load coefficient serves as a standard of the economic measurement indexes, and optimum economic benefit can be obtained.
Description
technical field [0001] The invention relates to the field of discrimination of economic operation of power system components, in particular to a unified discrimination method for economic operation indicators of transmission lines, transformers and motors. Background technique [0002] The main non-power components of the power system are transmission lines, transformers and asynchronous motors. Due to their inherent physical characteristics, these components determine the economy of their operation. For transmission lines, people usually use the economic current density to measure the economy of its operation; for transformers, people usually use the best load rate to measure the economic operation of the transformer; for motors, people usually use the best load rate to measure the motor economic performance. At present, in the economic operation indicators of transmission lines, transformers and asynchronous motors mentioned in relevant literature, not only the physical m...
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IPC IPC(8): G06F19/00
Inventor 杜贵和王正风陈实
Owner STATE GRID ANHUI ELECTRIC POWER CO LTD