Calculation formula of power tariff
90kw motor is usually angle connected, working current refers to the current of each phase, 380V is line voltage, and its phase voltage is 220V. Power consumption per hour q = voltage x current x time X3 = 220 x 130 x 1 x 3 = 85800 (W.H), that is 85.8 degrees
according to the nominal power, the power consumption q = power X time x power factor, regardless of the power factor, is about 90x1 = 90 (degrees)
calculation formula of electric quantity: q = I * t, I = q / T
Q: electric quantity, unit Coulomb (c)
I: current, unit ampere (a)
t: time, unit second (s)
microscopic expression of current intensity: I = nqsv, q = I / NSV, where I is the current intensity, n is the number of charges per unit volume, s is the cross-sectional proct of conctor, and V is the velocity of charge movement
Electrical calculation:I. resistance R
1. Resistance equals resistivity times (length divided by cross-sectional area) r= ρ× L/S
Resistance is equal to voltage divided by current R = u / I The resistance is equal to the square of voltage divided by the electric power r = u & # 178/ P Electric work is equal to current times voltage times time w = uit (common formula) electric work is equal to electric power times time w = Pt Electric work is equal to charge multiplied by voltage w = UQ Electrical work is equal to the square of current times resistance times time w = I & # 178;; RT (pure resistance circuit) Electrical work is equal to the square of voltage divided by the resistance and then multiplied by the time w = u & # 178/ R × T (ditto) Electric power is equal to voltage times current p = UI Electric power is equal to the square of current multiplied by resistance P = I & # 178; R (pure resistance circuit) Electric power is equal to the square of voltage divided by resistance P = u & # 178/ R (ditto) Electric power is equal to electric power divided by time p = w / t 5. Electric power P = UInote: when the same resistance is in the same circuit, the power will become a quarter of the previous
Electric heating is equal to the square of current multiplied by resistance multiplied by time: q = I & # 178; RT (pure resistance circuit) Electric heating is equal to the current multiplied by voltage multiplied by time: q = uit = w (common formula),3. Electric heating is equal to the square of voltage divided by resistance multiplied by time: q = (U & # 178/ R) In general, electric heating is equal to the consumption of electric energy, and the premise is that the pure resistance is used in the electricity
source of reference: network power
Suppose that the active power is a, the reactive power is B, and the power factor is cos φ， Then
monthly average power factor: cos φ= A / root sign (square of a + square of B)
the power factor standard requires 0.9
power factor reward and penalty regulations: when the power factor is lower than the standard by 0.01, the penalty will be increased by 0.5% from the total electricity charge, which will be increased to 1% for each level lower than 0.7 and 2% for each level lower than 0.65; For every 0.01 higher than the standard, 0.15% of the total electricity charge will be awarded, and so on, the top will be 0.75%
the power factor adjustment meter with 0.90 as the standard value in Table 1 reces electricity charges and increases electricity charges actual power factor monthly electricity charges decrease% actual power factor monthly electricity charges increase% actual power factor monthly electricity charges increase% 0.900.00 0.89 0.5 0.76 7.0 0 0.91 0.15 0.88 1.0 0 0.75 7.5 0.92 0.30 0.87 1.5 0.74 8.0 0 0 0.93 0.45 0.86 2.0 0 0 0.73 8.5 0.94 0.6 0.85 2.5 0.72 9.0 0.95 ~ 1.00 0.75 0.84 3.0 0.71 9.5 0.83 3.5 0.70 10.0 0 0.82 4.0 0 0.69 11.0 0 0.81 4.5 0.68 12.0 0 0.80 5.0 0 0.67 13.0 0 0.79 5.5 0.66 14.0 0 0 0 0.78 6.0 0 0 0.65 15.0 0 0 0 0 0.77 6.5 power factor from 0.64 or below, each decrease of 0.01, the electricity charge increases by 2%. According to relevant regulations, the percentage of total electricity charge penalty is 19%
short term trend: the market has been rising continuously recently, and the market should be cautious in the short term. Medium term trend: accelerating upward trend. Long term trend: so far, there are 7 main institutions with a total position of 35.3659 million shares, accounting for 28.72% of the circulating a shares<
institutional participation: 44.58% of institutional participation, belonging to complete control, capital flow: main net inflow of - 36.8533 million, super large single inflow of 55.5532 million, main cost: the main cost of the last day is 38.11 yuan, and the main cost of the last 20 days is 29.68 yuan
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