工業(yè)企業(yè)無(wú)功補(bǔ)償與節(jié)能外文翻譯-wenkub
2023-05-19 03:39:14 本頁(yè)面
【正文】 of the transformer is basically 28% ~ 29%， and shows the transformer capacity is too large， transformer capacity can not be fully utilized， not only a waste of investment in equipment has increased the power loss. Rational choice by the transformer capacity and electrical equipment to reduce or limit the lightload or no load time to prevent the big horsedrawn cart phenomenon. To avoid the noload operation of equipment At present， the plant is running a serious load of some equipment. Improving the power factor， the first consideration should be given a reasonable run the equipment to improve power factor of power the device itself. The plant main load is AC motor， its power factor load with it change， motor idling， the power factor of about ~ between the rated load at ~ between the motor and thus should be made near the 6 rated load state run. We should improve the motor power factor， the simplest way is to use capacitors and electric motors in parallel， so to avoid the noload operation device is to improve the power factor equipment， an important way. Economic Benefit Analysis To the factory power supply system in two transformers， for example， installation of capacitors in the low voltage side， so that highpressure side of the plant to focus on pensation and dispersion pensation bination of lowvoltage side of a pensation formula， shown in Figure 2. Graph 2 transformer capacity of 800kVA， model S9 800 / 10， rated copper loss for the 715kW， transmission line model YJV22. Get price of yuan / kWh. The power factor by the pensation prior to to pensate for ， Table 2 is the use of measuring instruments measured in the field of transformer secondary side runtime data are analyzed by calculating the loss of reactive power pensation reduced energy efficiency. Figure 2 foundry supply diagram Table 2 transformer secondaryside runtime data table 7 The energysaving highvoltage power lines Throughout the year to save electricity ΔW = 1P h Where 1P l the increase in electric power lines， 22 112c os31 c osP I R ???????????????? The number of annual operating hours， whichever 5000h. The calculation of annual energy savings ， within one year to reduce electricity consumption costs million yuan. Transformersaving The loss of main transformer iron loss and copper loss. Transformer secondary side to improve the power factor， can reduce the total load current， thereby reducing the copper loss. Transformer copper loss of the year to save energy ΔW = (ΔPCu1 ΔPCu2) h where ΔPCu1 pensation for the actual runtime before the transformer copper loss of electric power， 211Cu CuNNIPP I??? ???? ΔPCu2 pensated transformer copper loss of electric power， 8 21212c o sc o sC u C uNPP ????? ???? The calculation of annual energy savings 3150kWh， within a year to save electricity transformer copper loss of 173， 518 yuan. Power Factor Adjustment tariff Users within a year to reduce spending more than the low power factor penalty: 800 0. 589 5000 % (increase rate) = million yuan of pensation within one year after the users get the power factor bonus: 800 0. 589 5000 %
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