一、焦化发电机组并机时振动大的原因

　　1、 The reason for the large vibration during the parallel operation of coking power generation units

　　1.焦化发电机组不平衡

　　1. Unbalanced coking power generation unit

　　在发电机并机系统中，机组不平衡是导致振动的主要原因之一。焦化发电机组不平衡的表现形式是转子的质量分布不均匀，导致转子的离心力不平衡，

　　In the generator parallel system, unit imbalance is one of the main causes of vibration. The manifestation of imbalance in coking power generation units is the uneven distribution of rotor mass, which leads to an imbalance of centrifugal force in the rotor,

　　2.转子偏心

　　2. Rotor eccentricity

　　转子偏心是指转子的中心轴线与轴承中心轴线不重合，也是造成振动的常见原因。转子偏心会导致转子在旋转时产生不平衡的离心力，

　　Rotor eccentricity refers to the misalignment between the central axis of the rotor and the central axis of the bearing, which is also a common cause of vibration. Eccentricity of the rotor can lead to unbalanced centrifugal force during rotation,

　　3.轴承损坏

　　3. Bearing damage

　　轴承在发电机并机系统中起着支撑和定位的作用，如果轴承损坏或磨损过度，会导致转子的运转不稳定，

　　Bearings play a supporting and positioning role in the generator parallel system. If the bearings are damaged or excessively worn, it can lead to unstable operation of the rotor,

　　4.定子或转子的过热

　　4. Overheating of stator or rotor

　　在发电机并机系统中，定子或转子的过热也会导致振动现象的出现。这是因为过热会导致定子或转子的材料性能发生变化，从而影响转子的平衡性。

　　In the generator parallel system, overheating of the stator or rotor can also lead to vibration phenomena. This is because overheating can cause changes in the material properties of the stator or rotor, thereby affecting the balance of the rotor.

　　二、发电机并机时振动大的调整方法

　　2、 Adjustment method for large vibration during generator parallel operation

　　1.机组平衡调整

　　1. Unit balance adjustment

　　机组平衡调整是解决机组不平衡问题的有效方法。具体步骤是先对机组进行静平衡，然后进行动平衡，进行振动测试，确保机组运转平稳。

　　Unit balance adjustment is an effective method to solve the problem of unit imbalance. The specific steps are to first perform static balancing on the unit, then perform dynamic balancing and vibration testing to ensure smooth operation of the unit.

　　2.转子偏心调整

　　2. Adjustment of rotor eccentricity

　　转子偏心调整是指对转子进行调整，使其中心轴线与轴承中心轴线重合。具体步骤是先用仪器检测转子的偏心情况，然后对转子进行调整，进行振动测试，确保转子运转平稳。

　　Rotor eccentricity adjustment refers to adjusting the rotor so that its central axis coincides with the central axis of the bearing. The specific steps are to first use instruments to detect the eccentricity of the rotor, then adjust the rotor and conduct vibration testing to ensure smooth operation of the rotor.

　　3.轴承更换

　　3. Bearing replacement

　　如果轴承损坏或磨损过度，需要及时更换。更换轴承时，需要注意轴承的型号和规格，确保更换后的轴承能够与原轴承相匹配。

　　If the bearing is damaged or excessively worn, it needs to be replaced in a timely manner. When replacing bearings, it is necessary to pay attention to the model and specifications of the bearings to ensure that the replaced bearings can match the original bearings.

　　4.控制温度

　　4. Control temperature

　　为了避免定子或转子的过热，需要控制好发电机并机系统的温度。具体方法包括加强通风、降低负载、增加冷却水量等。

　　To avoid overheating of the stator or rotor, it is necessary to control the temperature of the generator parallel system. The specific methods include strengthening ventilation, reducing load, increasing cooling water volume, etc.

　　总之，焦化发电机组并机时振动大是电力系统中常见的问题，需要及时采取措施进行调整。通过焦化发电机组平衡调整、转子偏心调整、轴承更换和控制温度等方法，可以有效地解决振动问题，保障电力系统的安全稳定运行。

　　In short, the large vibration during the parallel operation of coking power generation units is a common problem in the power system, and timely measures need to be taken to adjust it. By adjusting the balance of coking power generation units, adjusting rotor eccentricity, replacing bearings, and controlling temperature, vibration problems can be effectively solved to ensure the safe and stable operation of the power system.

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