更新時(shí)間：2023-01-31
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無(wú)論是單位還是戶(hù)外演出，我們在建設之初都要預先預算好系統功率;只有電路不出問(wèn)題，以后的各類(lèi)演出才能正常舉行;那么一套
山東舞臺燈光音響系統用電量怎么計算，下面帶你了解一下。
Whether it is unit or outdoor performance, we should budget the system power in advance at the beginning of construction; Only if there is no problem with the circuit can the future performances be held normally; How to calculate the power consumption of a set of Shandong stage lighting and sound system? Let me show you.
一、為什么要計算用電量
1、 Why should we calculate the power consumption
計算電功率是為了估算設備用電量，來(lái)確定配電的容量;確定配電容量施工時(shí)才能知道每路電源線(xiàn)路需要什么樣的電源線(xiàn)。
The calculation of electric power is to estimate the power consumption of equipment to determine the capacity of power distribution; Only when determining the distribution capacity can we know what power lines are needed for each power line.
二、基本的配電知識
2、 Basic power distribution knowledge
配電容量用單位kva視在功率，設備電功率單位kw有功功率，需要有個(gè)功率因數做轉化，功率因數一般取0.9比較符合目前的系統和技術(shù)。
The distribution capacity is based on the apparent power of unit kVA, and the electrical power of equipment is based on the active power of unit kw. A power factor is required for conversion. The power factor is generally 0.9, which is in line with the current system and technology.
三、跟據音響，燈光，視頻三個(gè)系統估算用電量
3、 Estimate the power consumption according to the three systems of audio, light and video
1、音響系統
1. Audio system
電功率估算量=功率放大器功率+音響處理周邊設備功率
Estimated electric power=power amplifier power+audio processing peripheral equipment power
以上說(shuō)的設備功率都是設備標稱(chēng)的額定功率，直接在設備銘牌或說(shuō)明書(shū)上找到就行，即設備長(cháng)期穩定工作時(shí)的平均電功率;特別注意估算時(shí)不用考慮揚聲器的功率，也不用考慮時(shí)序電源的功率，功率放大器的功率也不用乘以1.5之類(lèi)的倍數。如果是有源揚聲器，上面的公式中功率放大器功率換成有源揚聲器功率即可。
The equipment power mentioned above is the nominal rated power of the equipment, which can be found directly on the equipment nameplate or manual, that is, the average electrical power of the equipment when it works stably for a long time; Pay special attention to the fact that the power of the speaker and the power of the timing power supply are not considered in the estimation, and the power of the power amplifier is not multiplied by a factor of 1.5. If it is an active speaker, the power of the power amplifier in the above formula can be replaced by the power of the active speaker.
2、燈光系統
2. Lighting system
電功率估算量1=需用系數x直通或者調光柜的功率，需用系數根據系統的復雜程度和工藝特點(diǎn)不同，一般取值0.5到0.8為對于簡(jiǎn)單無(wú)需調光的系統而言。
The estimated electric power 1=demand coefficient x power of the direct or dimming cabinet. The demand coefficient varies according to the complexity of the system and the process characteristics. Generally, the value is 0.5 to 0.8 for a simple system without dimming.
電功率估算量2=燈具功率之和，燈光系統中燈具的功率占比大，調光臺，網(wǎng)絡(luò )節點(diǎn)設備等的功率可以忽略不計。
The estimated electric power 2=the sum of lamp power. The power of lamps in the lighting system accounts for a large proportion, and the power of dimmers, network node equipment, etc. can be ignored.
3、視頻系統
3. Video system
視頻一般是投影機和幾個(gè)led大屏的功率，投影機的功率直接看額定功率，LED大屏的額定功率都是屏幕在亮度，白屏亮度時(shí)候測得的功率;大屏功率都是多少千瓦一個(gè)平方，跟據大屏的總面積計算出多少瓦用電量。
Video is generally the power of projectors and several large LED screens. The power of projectors depends directly on the rated power. The rated power of large LED screens is the power measured when the screen is at brightness and white screen brightness; The power of the large screen is how many kilowatts per square meter, and the power consumption is calculated according to the total area of the large screen.
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