1 Fault classification of ship synchronous generator and pressure regulating system Faults of 1 step generator and pressure regulating system in the mountain. Eventually it is enough for the size of the generator terminal voltage to be present or not. For this reason, we divided the synchronous generator voltage from the rated value into dynamic faults. Divide the fault so that the synchronous generator voltage is smaller than the rated value into static faults.

No. Dynamic fault No. Static fault Generator can't establish voltage Generator Voltage drop Generator voltage drop C20tp Generator voltage rises 10 ㄇ Generator does not generate power suddenly When sudden load increases, voltage drops sharply 2 Synchronous generator failure analysis method In the case of a normal electrical fault, there is a short circuit between the stator windings. Winding circuit transfer to the excitation coil 匝 1 short-circuit circuit breaker and the brush part of the fault for the short circuit failure, the general disassembly can be seen with the naked eye; for the turn of the short circuit, often accompanied by a serious local organic heating, phase voltage asymmetry, It is not difficult to distinguish. A short circuit between the rotor excitation coils will increase the excitation current. Therefore, if the excitation current is detected and the normal value is exceeded, it can be considered that there is a short circuit between the turns, and the disintegration can be found with the naked eye. Brushless synchronous generator. It comes with a pepper-type exciter and rotating commutator, it has no brush part of the fault, accompanied by, transfer, flow and exciter failure. This part of the fault rotating commutator breakdown or disconnection of the rotor winding and the excitation coil also has a short-circuit breaking fault. Brushless machines have many more relationships than the brush machine, and it is more difficult to analyze the fault flash of the special brush machine. Regardless of whether it is a dynamic fault or a static fault, it has been proved that the reason is not that the voltage regulator system, such as the replacement of the voltage regulator, should distinguish whether the fault belongs to the main generator or the exciter. First, check whether the rotating commutator has a heart failure or an open fault. . If there is no breakdown or open circuit fault in the rotating commutator, use a spectrum analyzer to measure the harmonic component of the main generator terminal voltage. If the harmonic test is larger than the normal machine. The explanation is that the exciter is in danger, which detects the gripping characteristics of each rotary commutator, whether it is caused or not; it should not be replaced; the stator coils are short-circuited or open circuited, and can be checked with the universal and short-circuit detectors if the harmonic components are not changed. The description is a failure of the blue generator.

Front boat. The use of the synchronization machine took two types of memory access, namely, 茗呗, 嗯, 漂, 漂, ,, ,, and 他. It is in the generator part or the pressure regulating system that the watershed is in the size and waveform of the magnetic current. If the excitation current is in the rated position and the generator voltage is not in the rated value, the fault is in the generator. If the excitation current is abnormal, the fault is caused by the voltage regulator system. If the waveform of the excitation current is distorted or the harmonic component is significant, the cause of the fault is Excitation system part. This kind of discrimination only needs to output the magnitude of the direct current detection current in the output of the excitation system, and observe the waveform with a wave device, and then it can find the approximate position of the original pulse. Once confirmed 6, in the pressure regulator system failure, you have to analyze the fault before the original according to the type of pressure regulating system. The regular pressure regulating system includes thyristor regulators and controlled-phase compound excitation regulators.

3.1 thyristor voltage regulator failure analysis, general product gate valve voltage regulator mountain measurement comparison circuit phase shift trigger circuit thyristor main circuit pressure control circuit and extinction circuit and other components. If it is a dynamic fault, first check whether the main circuit of the thyristor is normal, and secondly check the apricot triggering Tunlu 6 to check the electronic circuit normally. The most effective method is to detect the waveform of each heart to determine the cause of the fault. For the failure to establish a voltage fault, first magnetization, if the voltage can be established when magnetizing, and can not establish the voltage when not magnetizing, the fault lies in the pressure control circuit or the de-excitation circuit. If magnetizing, a voltage failure cannot be established in the generator excitation loop. Static faults occur in the measurement comparison circuit or phase shift control circuit.

In short, the occurrence of faults occurred in the product thyristor. The backtracking method was used. 3.2 The controllable phase compound excitation voltage regulator was analyzed. The controllable phase excitation regulator was composed of two parts. Part 1 is phase, excitation. The other part is a Tunka corrector. Since the phase-excitation part is responsible for the dynamic characteristics of the voltage regulator, and the voltage corrector is responsible for adjusting the special state of the whipper, the main part of the dynamic fault detection is the compound excitation part. For example, if the sudden load voltage drops seriously, it may be that the current compound component is insufficiently compensated, or the phase of the rectifier circuit may be equal to 1; At this time check the voltage corrector. The voltage corrector circuit is composed of a thyristor voltage regulator phase shift trigger circuit and a thyristor output circuit. The difference is the process of its seven effects. For the corrector =.

Thyristor output circuit current increases, so that the generator's excitation current decreases, so that the generator is reduced, the final correction and the product pressure regulator, when 4, when the voltage regulator is to reduce the thyristor output circuit current, that is, reduce The small generator excitation current is eventually regulated so that the generator terminal voltage is rated =, so analysis of these two circuit faults must capture this characteristic.

Yes, for the controllable phase compound excitation voltage regulator system, the corresponding fault link can also be found according to the fault type.

4 conclusions are summarized above. Failure analysis of starter and regulator systems.

First, according to the fault phenomenon to determine whether it is a dynamic fault, or a static fault, and then according to the type of fault and the size of the excitation current can quickly determine the location of the fault, which is particularly important for ships on the sea. Shortening the maintenance time and increasing the repair rate can greatly increase the effectiveness of the ship power supply system.

This method was demonstrated by the author in the process of boarding the ship and repairing the ship. Due to limited space, the author will not give examples.

I Xiao Leming, Cai Dajie. Brushless Generator Rotor Fault Simulation and Difficult Fault Detection . China ship repairs, 1997.3 2 Yan Naizhong. Ship Electrical Equipment Repair Guide. Beijing People's Transport published 3 Zhang Jun. Ship Station Power Station Synchronous Generator Automatic Excitation Device . Beijing National Defense Industry Press, 1989 Received date: 200104 Shipping information China-Korea Seafreight Freight Lines Drop Inevitably The relevant experts believe that the decline in passenger and cargo freight rates on the China-Korea sea route is inevitable.

After the establishment of diplomatic relations between China and South Korea. The maritime business between the two countries has developed rapidly. so far. China's Dandong, Dalian, Tianjin, Yantai, Weihai, Qingdao and Shanghai Port, and South Korea's Busan, Hong Kong, both open up regular passenger and cargo routes. This year, the two countries will open up two new ports: Lianyungang to South Korea’s Mokpo and Shidao to South Korea’s Pyeongtaek Port. route. There are overlaps in the passenger and cargo transportation lines that have been opened up. Two new routes will be opened this year so that the passenger and cargo transportation lines will not only overlap, but they will also be concentrated in such a not too wide sea area as Tianjin Port to Lianyungang. This will inevitably cause Take on the fierce competition of shipping companies of these routes.

At present, the China-Korea Passenger Cargo Shipping Company Association has held a meeting to coordinate and the two companies intend to take measures to resolve this difficulty. From Weihai to Renlin, the freight rate per TEU will decrease by US$50 each during the year, but the specific time has not been announced.

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