[Overview] The insulation system of the generator set is a measure to ensure the safety of the user. Risk factors such as leakage and damage to the insulator are partly caused by the customer's incorrect operation or the influence of the external environment. Unknown parts of the insulator of the generator set Discharge can also cause. Jiangsu Haixing Power systematically explains the secrets to everyone. 1. What is partial discharge of generator set? What are the main forms? Under the action of the electric field, the electric field intensity in local areas of the insulator in the insulation system reaches the breakdown field strength, and discharge occurs in some areas. This phenomenon is called partial discharge (Partial Discharge). Partial discharge only occurs locally in the insulation and does not penetrate the entire insulation. There are three main types of partial discharge in the generator set: internal discharge of the winding main insulation, end corona discharge and slot discharge (including slot corona). In addition, there is a kind of hazardous discharge in the generator set, which is caused by the breakage of the stator coil strands or joints.

The three most common problems in excitation generator sets are: loss of excitation, out-of-step, and oscillation. Although Jiangsu Haixing Power has explained these problems before, many customers still have questions. Therefore, this article summarizes the solutions. 'Loss of excitation' 'Phenomena' During the operation of the generator set, after the generator loses excitation due to open circuit, short circuit of the excitation circuit, small excitation current or rotor circuit failure, the relevant indications of the generator and excitation system will react as follows: 1. The rotor ammeter and voltmeter indicate zero or close to zero; 2. The stator voltmeter indicates a significant decrease; 3. The electronic ammeter indicates an increase and shakes; 4. The generator active power meter indicates a decrease and swings; 5. The generator active power The table indicates negative values. The generator loses excitation current during operation, causing the rotor's magnetic field to disappear. This may be caused by the excitation switch accidentally tripping, the exciter or semiconductor excitation system malfunctioning, the rotor circuit disconnection, etc. When magnetism is lost

In recent years, large-scale data centers have grown rapidly and will be applied to more and more high-power UPS. Due to the need to control the amount of batteries used in UPS, the delay time of high-power UPS is basically 15-30 minutes, which requires matching power generation. The unit provides continuous power supply to the equipment.Based on the above reasons, we have to face the problem of matching and compatibility between high-power UPS and generator sets. The following are some personal suggestions for reference for people in the power industry:

1. Basis for purchasing diesel generator sets 1) The performance and quality of the selected diesel generator set must comply with relevant standards. Diesel generators are widely used in telecommunications, financial departments, hospitals, schools, commerce and other departments, industrial and mining enterprises and residential buildings. Emergency backup power supply, independent power supply for special purposes such as military and field operations, vehicles and ships.(Copyright © WWW.HXDLKJ.COM) As a diesel generator set for communication, it must meet the requirements of G3 or G4 in GB2820-1997, and at the same time, it must meet the requirements of the 'Implementation Rules for Network Quality Certification and Testing of Diesel Generators for Communication' 24 performance index requirements must also pass the strict inspection of the Communication Power Equipment Quality Supervision and Inspection Center established by my country’s industry authorities.As a diesel generator set for military communications, it must meet the relevant requirements of GB2820-1997 and GJB.

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When it comes to the frequency of generator sets, many inexperienced customers will think that the higher the frequency, the better. However, the generator set becomes damaged after long-term use. Jiangsu Haixing Power has summarized this technical article for your reference for this type of customers, so that customers can timely detect unit problems during use and reduce maintenance costs. Generally, the frequency of the generator set should not exceed 52.5HZ, which is 5% more than the rated value. Therefore, if the frequency of the generator set is found to be abnormal during use, measures must be taken promptly. When the frequency increases, it is mainly limited by the strength of the rotating machinery. When the frequency is high, the motor speed is high. When the speed is high, the centrifugal force on the rotor increases, which easily causes damage to some parts of the rotor. When the frequency decreases, the following problems will occur: (1) The decrease in frequency causes the rotation speed of the rotor to decrease, which reduces the air volume blown by the fans at both ends, worsens the cooling conditions of the generator, and increases the temperature of various parts. (2) Low frequency

The quality of the generator set mainly depends on the quality of the engine. The 2000kw generators from high to low are MTU, cummins, Mitsubishi, and domestically produced Jichai. If it is not a particularly important emergency, if you are patriotic, it is recommended to choose domestically produced ones, which are also good to use. Original imported unit brands: Caterpillar, Cummins Electric, Kohler (MTU), MTU and some German assembled units have entered the domestic market, but sales are not large. Domestic assembly is mainly based on Cummins and MTU. Because of their high power, owners are more cautious when choosing. Moreover, the price advantage of domestic assembly is not obvious, and most of them are imported with original packaging. If the main use is 2000kw, the competition is mainly between Caterpillar and Kohler, but the price difference is not big, and most customers will choose Caterpillar.

Jiangsu Haixing Power reviewed the after-sales service information in 2010 and found that some customers failed to detect the problem in time when the synchronous generator set oscillated and lost synchronization, resulting in damage to the unit. Then, Haixing Generator Set will guide you to determine which generator is out of step from the indications of the meter, so as to solve the problem and ensure the smooth operation of the unit. Dealing with accidents is generally divided into three steps. First, we need to understand the essence of the problem: What is the reason for the oscillation and loss of synchronization of the generator set? As we all know, when a synchronous generator is operating normally, the rotational speed of the rotor and the synchronous rotational speed of the stator magnetic field are in a synchronized state. However, when the load suddenly changes, due to the inertia of the rotor, the rotor displacement cannot immediately stabilize at the new value, but will cause several swings around the new stable value. This phenomenon is the oscillation of the synchronous generator. When oscillation occurs When the speed of the unit is no longer consistent with the synchronous speed of the stator magnetic field, the generator and the power system will be inconsistent.

In order to improve the stability of the generator set operating system, many users will forcefully excite the generator during use. So why should forced incentives be implemented? What factors need to be considered for strong incentives? Jiangsu Haixing Power will tell you about improper post-processing methods. As a professional manufacturer specializing in the production and sales of generator sets, Haixing Generator Set is professional in science and technology and has a leading level in the industry. The main operating brands include: Cummins, Volvo, Dongfeng, Weichai, Shangchai and other diesel generator sets, which have passed national quality inspection and certification and won strong praise from customers. First, why do we need to excite the generator set? What are the benefits of doing this? In order to improve the stability of the generator operating system, the voltage can quickly return to the normal state after the short-circuit fault is removed. It is required that when the voltage drops to a corresponding value, the excitation energy of the generator will increase immediately, so the generator must implement forced excitation. Second, what factors limit the time of forced incentives? Forceful motivation

Since April 6, fuel prices at gas stations across the country have been on the verge of rising, and long queues for refueling have appeared in many places overnight. The National Development and Reform Commission decided to increase the prices of gasoline and diesel by 500 yuan and 400 yuan per ton respectively from 0:00 on April 7, and the national average prices of No. 90 gasoline and No. 0 diesel were increased by 0.37 yuan and 0.34 yuan per liter respectively. This is the second time this year that domestic refined oil prices have been raised. This is a concern of many car and generator set users. Under conditions where fuel prices cannot be controlled, reducing engine fuel usage is the only good way. If the engine oil consumption is too much, the cause should be carefully found and eliminated to ensure the normal operation of the generator set. The main reasons for high oil consumption are as follows: 1. Due to oil leakage from the generator set or engine. The front oil seal of the engine crankshaft leaks oil, and this type of failure is common. The crankshaft oil seal is a skeleton rubber oil seal. Due to the installation and quality of the oil seal,