更新時間：2023-01-31
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無論是單位還是戶外演出，我們在建設(shè)之初都要預先預算好系統(tǒng)功率;只有電路不出問題，以后的各類演出才能正常舉行;那么一套
山東舞臺燈光音響系統(tǒng)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(shè)備用電量，來確定配電的容量;確定配電容量施工時才能知道每路電源線路需要什么樣的電源線。
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(shè)備電功率單位kw有功功率，需要有個功率因數(shù)做轉(zhuǎn)化，功率因數(shù)一般取0.9比較符合目前的系統(tǒng)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(jù)音響，燈光，視頻三個系統(tǒng)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(tǒng)
1. Audio system
電功率估算量=功率放大器功率+音響處理周邊設(shè)備功率
Estimated electric power=power amplifier power+audio processing peripheral equipment power
以上說的設(shè)備功率都是設(shè)備標稱的額定功率，直接在設(shè)備銘牌或說明書上找到就行，即設(shè)備長期穩(wěn)定工作時的平均電功率;特別注意估算時不用考慮揚聲器的功率，也不用考慮時序電源的功率，功率放大器的功率也不用乘以1.5之類的倍數(shù)。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(tǒng)
2. Lighting system
電功率估算量1=需用系數(shù)x直通或者調(diào)光柜的功率，需用系數(shù)根據(jù)系統(tǒng)的復雜程度和工藝特點不同，一般取值0.5到0.8為對于簡單無需調(diào)光的系統(tǒng)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(tǒng)中燈具的功率占比大，調(diào)光臺，網(wǎng)絡(luò)節(jié)點設(shè)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(tǒng)
3. Video system
視頻一般是投影機和幾個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，白屏亮度時候測得的功率;大屏功率都是多少千瓦一個平方，跟據(jù)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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