Diesel generator is a small power generation equipment that refers to a power machinery that uses diesel as fuel and diesel engine as the prime mover to drive the generator to generate electricity. The entire unit is generally composed of diesel engine, generator, control box, fuel tank, starting and control battery, protection device, emergency cabinet and other components. So what are the types of diesel generator sets? According to different properties, diesel generator sets are mainly classified into the following eight categories:

(1) According to the fuel classification of the engine, it can be divided into diesel generator sets and composite fuel generator sets;

(2) According to speed classification, diesel generator sets can be divided into high-speed, medium speed, and low-speed;

(3) According to the classification of usage conditions, it can be divided into land use, marine use, and trailer type diesel generator sets. Land use generator sets include mobile and fixed types, which can be divided into four types: ordinary type, automated type, low noise type, and low noise automated type;

(4) According to the classification of generator output voltage and frequency, it can be divided into AC generator sets and DC generator sets. The AC generator set includes intermediate frequency 40HZ and power frequency 50HZ, and the calibration voltage for 50HZ power frequency small and medium-sized generator sets is generally 400V; The calibration voltage of large generators is generally 6.3V~10.5V;

(5) According to the excitation method of synchronous generators, they can be divided into rotating AC excitation machines and static excitation machines:

1) Rotating AC exciter excitation system, including AC exciter static rectifier excitation system and then brushless excitation system.

2) The excitation system of a static excitation machine includes a voltage source static excitation machine excitation system, an AC measurement series composite voltage source static excitation machine excitation system, and a harmonic (or fundamental) auxiliary winding excitation system;

(6) Classified by purpose:

1) Common Units

This type of generator set operates year-round and is generally located in areas far from the power grid (or city power) or near industrial and mining enterprises to meet the construction, production, and living electricity needs of these areas. In regions with relatively fast economic development, due to the inability of power grid construction to keep up with the needs of users, commonly used diesel generator sets with short construction cycles are established to meet the needs of Mazu users. This type of diesel generator set generally has a relatively large capacity and provides continuous power supply for non constant loads. There is no limit to the duration of continuous operation, and it allows for 1 hour of overload power supply every 12 hours. The overload capacity is 10% of the rated output power. This type of unit is adjusted to a lower point relative to the maximum power of the local unit due to its heavy operating time.

2) Standby unit

Under normal circumstances, the electricity required by users is supplied by the mains power. When the power supply is interrupted due to mains power restrictions or other reasons, a generator set is set up to ensure the basic production and daily life of users. This type of generator set is permanently located in important electricity consuming units such as telecommunications departments, hospitals, industrial and mining enterprises with tight power supply, airports, and television stations. These types of units are always in standby mode and can provide continuous power supply to non constant loads.

3) Emergency crew

Emergency generator sets are often installed to provide emergency power to electrical equipment that may cause significant losses or personal accidents due to sudden interruption of mains power, such as fire protection systems in high-rise buildings, evacuation lighting, elevators, control systems for automated production lines, important communication systems, and medical equipment undergoing important surgeries with patients. This type of unit should be able to quickly start and operate in the event of a sudden interruption of mains power, and provide stable AC power to the load in the shortest possible time to ensure timely power supply to the load. The automation level of this type of unit is relatively high.

(7) According to the classification of control and operation methods, it can be divided into operating generator sets, compartment operating generator sets, and automated generator sets:

1) On site operation of the generator set, the operator starts, closes, regulates speed, opens, and shuts down the generator set in the computer room. The vibration, noise, oil mist, and exhaust gas generated during the operation of such generator sets have adverse effects on the health of operators.

2) The generator set is operated in a compartment, and the machine room and control room of this type of generator set are set separately. The operator starts, regulates speed, stops and other operations on the diesel generator set in the machine room, monitors the operating parameters of the set, and implements centralized control on the auxiliary equipment in the machine room. Cabin operation can improve the working environment for operators.

3) After years of research by relevant units, the automation of diesel generator sets can achieve unmanned operation, including unit self start, automatic voltage regulation, automatic frequency regulation, load regulation, automatic parallel operation, automatic increase or decrease of units according to load size, automatic fault handling, and automatic recording. The printer set can automatically start 10-15 seconds after the interruption of mains power, replacing mains power for power supply;

(8) According to the classification of automation functions, it can be divided into basic diesel generator sets, automatic start diesel generator sets, and microcomputer automatic control diesel generator sets.

1) Basic diesel generator sets are relatively common, consisting of diesel engines, enclosed water tanks, fuel tanks, silencers, synchronous AC generators, excitation voltage regulation devices, control boxes, couplings, and chassis. The basic diesel generator set has automatic voltage and speed regulation functions. It can generally be used as the main power source or backup power source;

2) Automatic start diesel generator set is an additional automatic control system added to the basic diesel generator set. It has an automatic start function. When there is a sudden power outage in the city, the unit can automatically start, switch, operate, send points, and stop; When the oil pressure is too low, the oil temperature or the cooling water temperature is too high, it can automatically emit an audible and visual alarm signal; When the unit exceeds the speed limit, it can automatically emergency stop to protect the generator set;

3) The microcomputer automatic control diesel generator set consists of a diesel engine, a three-phase brushless synchronous generator, an automatic fuel supply device, an automatic oil supply device, an automatic cooling water supply device, and an automatic control cabinet. Automatic control application programmable logic controller (PLC) control. In addition to having functions such as self start, self switch, self operation, self input, and self stop, it is also equipped with various fault alarms and automatic protection devices. In addition, it is connected to the main computer through an RS232 communication interface for centralized control, capable of remote control, signaling, and telemetry, achieving the requirement of unmanned operation.

Guangzhou Saiwei Energy Technology Co., Ltd. is a comprehensive enterprise specializing in design, production, and generator installation. Guangzhou Saiwei has many years of experience in engineering design and installation services. For many years, Guangzhou Saiwei has been committed to providing every customer with comprehensive products and energy solutions, including technical consulting, whole machine and generator supply, operation training, etc., with leading technology and first-class quality. The product range covers land diesel generator sets, marine generator sets, high-voltage generator sets, etc., and is widely used in industries such as power, communication, iron towers, healthcare, financial systems, data centers, etc. Welcome to inquire: 13302262088