Power consumption estimating method taking regard of nondeterminacy electric quantity and electricity price elastic matrixes
An uncertain and elastic matrix technology, applied in the field of power consumption calculation of grid users, can solve the problems of not considering uncertain factors, unfavorable power demand response power forecasting and power price formulation, etc., to improve stability and economy , the effect of improving the accuracy
Inactive Publication Date: 2017-10-24
ZHEJIANG UNIV +2
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Problems solved by technology
[0003] However, the relationship between power consumption and electricity price in the current existing power demand response does not take into account uncertain factors, such as communication equipment failure, control equipment failure, random start-up and stop of equipment, and external environment temperature changes are not taken into account in the elasticity matrix , which is not conducive to the power forecasting and power price formulation of power demand response
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[0045] Further description will be given below in conjunction with the embodiments and accompanying drawings.
[0046] Embodiments of the present invention are as follows:
[0047] (1) The specific implementation divides 1 day into 3 time periods, and the electricity price of 1 day before the implementation of demand response is constant at power consumption is
[0048] After executing demand response, the electricity price in each time period is
[0049] Therefore, it is calculated Assume that the electricity price elasticity matrix E of this user 1 for
[0050] (2) The probability of occurrence of uncertain internal factors is By the formula ρ ij =-△Qi / Q i =-ε ij ·(△P j / P j ), i∈[1,n], j∈[1,n] to obtain the internal elasticity matrix E 2 for
[0051] (3) The predicted value of the external environment temperature is The actual value is Therefore, it is calculated
[0052] Obtain the user's power external cause elasticity matrix E by implementi...
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The invention discloses a power consumption estimating method taking regard of nondeterminacy electric quantity and electricity price elastic matrixes The power consumption estimating method taking regard of nondeterminacy electric quantity and electricity price elastic matrixes is characterized in that the electric power demand response of a price mechanism is executed; the power consumption of the user is influenced by the price mechanism and the nondeterminacy factors; the nondeterminacy factors include a nondeterminacy internal factor and a nondeterminacy external factor; a power consumption and electricity price elastic matrix, a power consumption internal factor elastic matrix and a power consumption external factor elastic matrix are constructed; and the three matrixes are utilized to calculate and obtain the power consumption after the demand response mechanism is executed. The power consumption estimating method taking regard of nondeterminacy electric quantity and electricity price elastic matrixes unitedly express the multiple nondeterminacy and the electric quantity and electricity price elastic matrixes, thus being convenient for guiding electric quantity prediction and electricity price making work for the demand response in the electric power system.
Description
technical field [0001] The invention relates to a method for calculating power consumption of power grid users, in particular to a method for estimating power consumption considering an elastic matrix of uncertain power and price. Background technique [0002] New energy power generation represented by wind energy and solar energy is intermittent and volatile. With the increase of the proportion of new energy in the power system, relying only on traditional generators to achieve power supply and demand balance can no longer meet the needs of the system. Power demand response is to help the system achieve balance through the active behavior of the load, reduce the load when the system power supply is insufficient, and increase the load when the system power supply is sufficient. The price mechanism is the main market means to realize load participation in demand response, and the electricity price elasticity matrix can clearly express the relationship between power consumptio...
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IPC IPC(8): G06Q10/04G06Q30/02G06Q50/06
CPCG06Q10/04G06Q30/0283G06Q50/06
Inventor 惠红勋李瑶虹丁一宋永华余磊陆伟伟加鹤萍
Owner ZHEJIANG UNIV