产品内容介绍
Kollmorgen B-102-A-21运行减速机
REG670用于保护从相对较小的机组到最大的发电机组，对发电机和发电机变压器组进行控制和监测。IED有一个全面的功能库，涵盖了大多数发电机应用的要求。可用的大量模拟输入与大型功能库一起，使许多功能集成在一个IED中。在典型应用中，两个单元可以提供全部功能，也可以提供高度冗余。REG670也可用于保护和控制并联电抗器。定子接地故障保护包括传统的95%以及100%注入和三次谐波保护。当使用基于注入的保护时，100%的机器定子绕组，包括星点，在所有操作模式下都受到保护。基于三次谐波的100%定子接地故障保护采用三次谐波差动电压原理。即使机器处于静止状态，基于注入的100%定子接地故障保护也可以运行。IED中包括极滑、欠励磁、转子接地故障、负序电流保护等久经验证的算法。REG670中的发电机差动保护适用于考虑了长直流时间常数和短跳闸时间要求等因素的发电机应用。由于许多保护功能可以作为多个实例使用，因此可以在一个IED中保护多个对象。可以为集成在具有发电机主保护的同一IED中的辅助电力变压器提供保护。因此，这一概念可以实现非常经济高效的解决方案。
差动保护
发电机差动保护GENPDIF定子绕组相间短路通常会导致非常大的故障电流。短路有损坏绝缘、绕组和定子铁芯的风险。较大的短路电流会产生较大的力，甚至会损坏发电厂中的其他部件，如涡轮机和发电机涡轮轴。为了限制定子绕组短路造成的损坏，故障清除必须尽可能快（瞬时）。如果发电机组与靠近其他发电机组的电力系统相连，则快速故障清除对于保持非故障发电机的瞬态稳定性至关重要。REG670还可以实现宝贵的监控可能性，因为许多过程值可以传输到操作员HMI。广泛的应用灵活性使该产品成为新装置和现有发电厂翻新的最佳选择。串行数据通信通过光纤连接来确保抗干扰能力。广泛的应用灵活性使该产品成为新装置和现有装置翻新的最佳选择。通过使用专利算法REG670（或670系列的任何其他产品），可以在9Hz到95Hz的很宽范围内跟踪电力系统频率。为此，最好将发电机端子的三相电压信号连接至IED。然后IED可以采用其滤波算法，以便正确测量连接到IED的所有电流和电压信号的相位。该特性对于发电机启动和停机过程中保护装置的正确运行至关重要。
The REG670 is used for protection
control and monitoring of generators and generator-transformer blocks from relatively small units up to the largest generating units. The IED has a comprehensive function library, covering the requirements for most generator applications. The large number of analog inputs available enables, together with the large functional library, integration of many functions in one IED. In typical applications two units can provide total functionality, also providing a high degree of redundancy. REG670 can as well be used for protection and control of shunt reactors. Stator earth fault protection, both traditional 95% as well as 100% injection and 3rd harmonic based are included. When the injection based protection is used, 100% of the machine stator winding, including the star point, is protected under all operating modes. The 3rd harmonic based 100% stator earth fault protection uses 3rd harmonic differential voltage principle. Injection based 100% stator earth fault protection can operate even when machine is at standstill. Well proven algorithms for pole slip, underexcitation, rotor earth fault, negative sequence current protections, and so on, are included in the IED. The generator differential protection in the REG670 adapted to operate correctly for generator applications where factors as long DC time constants and requirement on short trip time have been considered. As many of the protection functions can be used as multiple instances there are possibilities to protect more than one object in one IED. It is possible to have protection for an auxiliary power transformer integrated in the same IED having main protections for the generator. The concept thus enables very cost effective solutions.
Differential protection
Generator differential protection GENPDIF Short circuit between the phases of the stator windings causes normally very large fault currents. The short circuit gives risk of damages on insulation, windings and stator iron core. The large short circuit currents cause large forces, which can cause damage even to other components in the power plant, such as turbine and generator-turbine shaft. To limit the damage due to stator winding short circuits, the fault clearance must be as fast as possible (instantaneous). If the generator block is connected to the power system close to other generating blocks, the fast fault clearance is essential to maintain the transient stability of the non-faulted generators. The REG670 also enables valuable monitoring possibilities as many of the process values can be transferred to an operator HMI. The wide application flexibility makes this product an excellent choice for both new installations and for refurbishment in existing power plants. Serial data communication is via optical connections to ensure immunity against disturbances. The wide application flexibility makes this product an excellent choice for both new installations and the refurbishment of existing installations. By using patented algorithm REG670 (or any other product from 670 series) can track the power system frequency in quite wide range from 9Hz to 95Hz. In order to do that preferably the three-phase voltage signal from the generator terminals shall be connected to the IED. Then IED can adopt its filtering algorithm in order to properly measure phasors of all current and voltage signals connected to the IED. This feature is essential for proper operation of the protection during generator start-up and shut-down procedure.
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