A Calculation Method of Energy Saving Rate in Intelligent Lighting

Abstract

The invention discloses a method for calculating the energy-saving rate in intelligent lighting, which includes: a monitoring center issues control commands to the intelligent control box of urban street lamps according to the overall turn-on and turn-off timetable of the whole city and the single-light timetable; The street lamp lighting equipment receives the instructions sent by the intelligent street lamp control box of the city to which it belongs, and executes the instructions to control the on-off status of the lamps or the power supply voltage of the lamps. At the same time, the intelligent street lamp lighting equipment uploads data to the intelligent street lamp control box of the city in real time; The street light intelligent control box receives the data transmitted by the street light equipment in real time and transmits it to the monitoring center. The monitoring center receives the street light equipment operation data transmitted by the urban street light intelligent control box, performs intelligent adjustment, and sends the adjusted control command to the city Street lamp intelligent control box; the monitoring center calculates the energy saving rate according to the operation data. The invention realizes intelligent energy-saving control of urban street lamps.

Description

technical field [0001] The invention relates to the field of intelligent lighting, in particular to a method for calculating energy saving rate in intelligent lighting. Background technique [0002] At present, the total number of street lighting facilities in general-scale cities is more than hundreds of thousands, of which there are also tens of thousands of lighting street lamps and their lamps. There is a phenomenon of wasting electric energy, and there is still a lot of room for improving the efficiency of electric energy utilization by reducing the large amount of electric energy wasted every year by street lighting. The existing street lighting facilities and their management and control systems still have the following problems in terms of energy saving: [0003] 1. Road street lights cannot be adaptively controlled according to the actual situation. Most of the urban road street lights are manually controlled or controlled by the control system at a unified time. W...

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Problems solved by technology

[0003] 1. Road street lights cannot be adaptively controlled according to the actual situation. Most of the urban road street lights are manually controlled or controlled by the control system at a unified time. When there are few pedestrians and vehicles on the road in the middle of the night, the illumination of the street lights remains the same, and it cannot be self-adapted according to the actual situation. Adjustment, sufficient lighting cannot be achieved when there are many pedestrians and vehicles. When there are few pedestrians and vehicles, the illuminance is reduced for basic lighting. When there are no pedestrians and vehicles, the street lights are turned off and no lighting is performed. In addition, with the arrival of dawn, the overall illuminance of the street lights gradually decreases until it goes out

[0004] 2. The granularity of the energy-saving rate algorithm is relatively coarse, and the difference between the algorithm result and the actual situation is relatively large

Under the manual control or unified time control mode of the management and control system, the energy-saving calculation of urban road street lights is relatively coarse-grained, and it cannot be refined to the on-off, illuminance intensity, and illuminance time of each street lamp, so there are inaccurate or even inaccurate algorithms. Phenomenon: when the street light has an intelligent power-saving mode, only the actual power consumption after power saving can be obtained, and the power consumption before power saving cannot be obtained. The power consumption before power saving can only be obtained by calculating the theoretical power consumption In practice, a variety of non-street lamp electrical equipment is also connected to the street lamp cable line, such as: billboards, bus stop signs, intersection signal lights and other equipment. The measurement of power is inaccurate, that is, the actual power consumption measured at the RTU or control box level also includes the power consumption of these additional loads. The power consumption of these additional loads is often large, which will seriously affect power saving and energy saving The calculated value of the rate

[0005] 3. There are large errors in the traditional method of obtaining theoretical power consumption. The method uses a meter to measure the power consumption when it is fully lit all night as the theoretical power consumption. However, this method has defects, such as: damage to lamps, line failures Cause multiple lights not to light up, changes in the extra load on the street light line, different lighting hours in different seasons, etc. These factors will lead to a large error in the theoretical power consumption per day

For street lamps without single-lamp controllers, they are also included in the calculation as part of the theoretical power consumption, resulting in inaccurate calculations and lower energy-saving rates; for accurate calculations, street lamps without single-lamp control should not participate in the calculation of node rates

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