Energy Saving Measures in Factory and Application of GGDZ-T Lighting Voltage Regulator

The energy consumption of buildings occupies a certain proportion in the total energy consumption of the entire society. In developed countries, this proportion is generally 30% to 40%. In China, this proportion is about 25%. In the energy consumption of buildings, the power consumption is the main part. Therefore, how to reduce the power consumption of buildings, especially the consumption of lighting power, is a key issue for technical personnel. In this paper, based on the introduction of power-saving measures in factories, we propose to use the GGDT-T lighting voltage regulator to reduce the lighting power in the factory.

1 Factory power-saving measures

In general, there are four main aspects of power-saving measures in factories: first, determine energy-efficient power supply and distribution systems; second, choose energy-saving equipment; third, use peaks and valleys of electricity resources; fourth, strengthen power measurement and management .

1.1 Determination of energy-saving power supply and distribution systems

Determine energy-saving power supply and distribution systems, mainly to determine a reasonable supply voltage. The supply voltage shall be determined comprehensively according to such factors as the capacity used, the power supply distance, the status of the local power grid, the nature of the power load, and future development. As the 10kV power system technology is relatively mature and the economic indicators are also good, in the case that the power supply system consumes less energy and less non-ferrous metals are consumed, the first choice is 10kV. When there are many 6kV devices and the capacity is large, 6kV can be considered. Of course, this needs to be considered together with the overall economic rationality. If there is a small number of 3kV motors, 10kV/3kV or 6kV/3kV special transformers can be used for power supply.

1.2 Selecting Energy Saving Equipment

(1) Select energy-saving transformers. At present, transformers are still the main energy source in the power transmission and distribution industry. The choice of using energy-saving transformers is of great significance in reducing energy consumption.

(2) Select reactive power compensation device. Improve the power factor of each component of the plant power system, and then make full use of the capacity of each device to achieve the purpose of reducing power loss and power consumption, which requires the use of reactive power compensation devices.

(3) Use the inverter. At present, the high-voltage frequency conversion speed regulation technology has been relatively mature. In a large number of fans, water pumps and other power equipment in the factory to use inverters to achieve frequency control, can reduce a lot of power loss.

(4) Use a high-efficiency motor. Compared with ordinary motors, high-efficiency motors have reduced energy consumption by 20% to 30% and efficiency has increased by two to seven percentage points. Under normal circumstances, the investment cost of a high-efficiency motor can be recovered within 2a, which can be as short as a few months.

(5) Use energy-saving lighting appliances. Energy-saving lighting electrical products have also been relatively mature, with a power factor higher than 0.9 and an active energy saving rate of more than 30%. The use of energy-saving lighting appliances in factories can save workers' working environment while saving electricity expenses.

(6) A reasonable selection of cables. In order to reduce the power loss of the cable itself, it is recommended to choose a low-resistance cable and ensure that the cross-sectional area of ​​the cable is properly selected in the case of ensuring safety and taking into account factors such as the load capacity and subsequent reconstruction and expansion of the project. This will not only save energy but also reduce investment costs.

1.3 Reasonable Use of Peak Valley Power Resources

The country adopts the “peak-valley electricity price” in order to achieve the role of “cutting peaks and filling valleys”. For factories, especially factories with conditions, reasonable arrangements for production time and cycle, and then make full use of peaks and valleys of electricity resources, can also achieve a certain degree of energy conservation and loss reduction.

1.4 Strengthening Power Metering Management

It is recommended that the factory conduct regular data testing and analysis of the running power metering device. This can avoid the cost loss caused by inaccuracy of the metering device. If any problem is found, it should be handled by the power authority in a timely manner. Secondly, the electricity consumption mechanism can be established based on the data. The rules will reduce unnecessary waste of electricity.

2 GGDZ-T lighting voltage regulator power saving cabinet application

GGDZ-T lighting voltage-save power saving cabinet is based on various power-saving technologies such as intelligent stepless voltage regulation, time-controlled voltage regulation, transformer compensation, and electrical control. It can also extend the use of lighting fixtures while achieving energy-saving lighting. life. This lighting and voltage saving cabinet has significant power saving effects for high pressure sodium lamps, high pressure mercury lamps, metal halide lamps, general fluorescent lamps and other lighting fixtures, especially when it is used for centralized control and long-term continuous operation of lighting fixtures. The power-saving effect is more prominent and can be described as "power-saving experts."

2.1 The Main Functions of GGDZ-T Lighting Voltage Saving Cabinet

(1) Soft start warm up. Lamp lighting at the beginning, voltage regulator power saving cabinet output 195 ~ 225V soft start warm-up voltage, after about 10min, then automatically transferred to the voltage-saving state. The 10 minute delay can be adjusted manually.

(2) regulator pressure regulator. The user can arbitrarily set the output voltage value between 190~220V, as well as the period of voltage change. According to these settings, the voltage regulator saves the output voltage automatically and slowly to the preset voltage value at a preset time.

(3) Time control. Users can use this voltage-saving power saver to set up eight time periods per day, and different power-saving voltages can be set for each time period.

(4) Optimize the output voltage. A compensation transformer is provided in the voltage-stabilization and power-saving cabinet, and the compensation transformer winding can suppress the transient of the load current, thereby achieving the purpose of optimizing the output voltage quality.

(5) Undervoltage protection. When the output voltage exceeds the range of (90%~110%) set value, the voltage regulator power saver will automatically switch to the bypass state and the power supply will be supplied by the commercial power supply.

(6) Short circuit protection. When a short circuit occurs at the output, the air circuit breaker automatically opens and shuts off the input power.

2.2 Performance Indicators and Parameters of GGDZ-T Lighting Voltage Regulator

Table 1 shows the performance indicators of the GGDZ-T lighting voltage regulator and power saving cabinet. The single-phase series parameters are shown in Table 2, and the three-phase series parameters are shown in Table 3. Users need to know the type, quantity, operating status, total load power, power factor, etc. of the lighting fixture when selecting the power-saving power-saving cabinet.

GGDZ-T lighting voltage regulator power saving cabinet performance indicators:

Project Description

Input voltage range /V 190~260

Output voltage range /V 190~220

Frequency/Hz 50

Regulation accuracy ≤3%

Output voltage waveform Sine wave

Maximum allowable temperature rise / K 80

Ambient temperature/°C -5~40

Cabinet protection grade IP54 (outdoor)

Insulation resistance/MΩ >5

1min withstand voltage strength/kV 2

Nominal energy saving rate >25%

Single-phase GGDZ-T lighting voltage regulator power saving cabinet parameters:

Model Nominal Capacity/kVA Rated Current/A Dimensions/(mm×mm×mm) Recommended Cable/(1×mm2)

GGDZ-T-1020 20 91 560×500×1000 2×25

GGDZ-T-1030 30 136 650×500×1200 2×35

GGDZ-T-1040 40 182 650×500×1200 2×50

GGDZ-T-1050 50 227 650×500×1200 2×70

GGDZ-T-1060 60 272 650×500×1200 2×95

Three-phase GGDZ-T lighting voltage regulator power saving cabinet parameters:

Model Nominal Capacity/kVA Rated Current/A Dimensions/(mm×mm×mm) Recommended Cable/(1×mm2)

GGDZ-T-3030 30 46 750×560×1150 4×10

GGDZ-T-3050 50 76 750×560×1150 4×25

GGDZ-T-3075 75 114 850×620×1400 4×50

GGDZ-T-3100 100 152 850×620×1400 4×70

GGDZ-T-3150 150 228 950×800×1700 4×120

GGDZ-T-3180 180 273 950×800×1700 4×150

GGDZ-T-3225 225 342 950×800×1700 2×(4×95)

GGDZ-T-3250 250 380 950×800×1700 2×(4×95)

GGDZ-T-3300 300 456 1380×1100×2000 2×(4×120)

GGDZ-T-3350 350 532 1380×1100×2000 2×(4×150)

GGDZ-T-3400 400 608 1380×1100×2000 2×(4×185)

GGDZ-T-3450 450 684 1380×1100×2000 Copper Bar Connection

GGDZ-T-3500 500 760 1380×1100×2000 Copper Bar Connection

GGDZ-T-3550 550 836 1380×1100×2000 copper row connection

GGDZ-T-3600 600 912 1380×1100×2000 Copper Bar Connection

GGDZ-T-3700 700 1064 Main Cabinet 1100×1100×2200, Sub-cabinet 900×1100×2200 Copper Bar Connection

GGDZ-T-3800 800 1215 Main Cabinet 1100×1100×2200, Sub-cabinet 900×1100×2200 Copper Bar Connection

2.3 GGDZ-T lighting voltage regulator power saving cabinet applications

GGDZ-T lighting voltage regulator power saving cabinet can be applied to power, electronics, communications, textile, paper, petrochemical, food processing and other current national economy in various fields. In addition to factories, municipal roads, transportation facilities, commercial buildings, etc. can also use this voltage-saving power saving cabinet. At present, Shanghai Baosteel, Yantai Municipal Road, Chengdu ICON Genesis Plaza (now known as ICON Dayuan International Center), etc. have become typical users of the GGDZ series of lighting voltage regulator power saving cabinets, and have achieved a good power-saving effect.