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Young (eay@cryptsoft.com) and Tim Hudson (tjh@cryptsoft.com). Trademarks ABB is a registered trademark of ABB Asea Brown Boveri Ltd. Manufactured by/for a Hitachi Power Grids company. All other brand or product names mentioned in this document may be trademarks or registered trademarks of their respective holders.
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Disclaimer The data, examples and diagrams in this manual are included solely for the concept or product description and are not to be deemed as a statement of guaranteed properties. All persons responsible for applying the equipment addressed in this manual must satisfy themselves that each intended application is suitable and acceptable, including that any applicable safety or other operational requirements are complied with.
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Conformity This product complies with the directive of the Council of the European Communities on the approximation of the laws of the Member States relating to electromagnetic compatibility (EMC Directive 2004/108/EC) and concerning electrical equipment for use within specified voltage limits (Low-voltage directive 2006/95/EC).
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Commissioning and acquiring references................. 81 7.2.4.1 B.1 Recording of data during different operating conditions of the generator....86 7.2.4.2 B.2 Analysis of collected data.................. 86 7.2.4.3 B.3 Setting of REG670....................90 7.2.5 Auditing..........................91 7.2.6 Editing features in graph....................92 7.2.7 Logging measurements to file................... 93 7.2.8...
Each logical I/O module has an error flag that indicates signal or module failure. The error flag is also set when the physical I/O module of the correct type is not detected in the connected slot. Generator protection REG670 Commissioning manual...
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The calibration shall be performed twice: after the first calibration the calculated parameters are transferred to ICT and written into the REG670. This way the second calibration is performed starting from parameters that are related to the protected generator. At the end of the second calibration a comparison between the values of the parameters calculated by the first and second calibration shall be performed.
Activate the injection by turning the injection switch to on position on the injection unit REX060. To launch the Injection commissioning tool (ICT), right-click REG670 in the PCM plant structure and select the Injection commissioning.
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The parameters, that are calculated during the first calibration, should be transferred to PST and written into REG670 to perform a second calibration. Even if the above checks are not fulfilled, these parameters are related to the generator and better starting values than the function default values.
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Second calibration When the first calibration is finalized, the parameters k1, k2 and RefZ1 are transferred to PST and written into REG670. In the following description the reference impedance, that was defined by the first calibration, is RefZ1 . Assuming that: RefZ1 =278.384 - j5194.771...
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Check the time of DCS, the time in the PC where PCM is running and the internal time of REG670. Synchronize the time in best possible way (if a time difference cannot be avoided, it shall be shorter than 5s and measured with an accuracy of 1s).
M2 is also connected to REX060 and switched on; after this activity, the installation and calibration are performed for the function STTIPHIZ of REG670-M2, while REG670-M1 is also connected to REX060 and switched on. During the calibration of one function STTIPHIZ, it is possible to set to Off the Operation of the other function STTIPHIZ that is not calibrated, if it is preferred that it does not issue alarms and trips.
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The calibration shall be performed twice: after the first calibration the calculated parameters are transferred to ICT and written into the REG670. This way the second calibration is performed starting from parameters that are related to the protected generator. At the end of the second calibration a comparison between the values of the parameters calculated by the first and second calibration shall be performed.
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2.1. The generator shall be in the condition described in 6.1.1 number 3 and 5. 2.2. Wait for stable values of RAVE and XAVE in the HMI of REG670 (RAVE and XAVE are available as service values of the function STTIPHIZ).
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5.1. Connect a short circuit between the neutral point of the generator and ground. 5.2. Wait for stable values of RAVE and XAVE in the HMI of REG670. 5.3. From the ICT toolbar, select the Start reading values from IED button. ICT starts to perform continuous measurements and after the tenth measurement it starts to update the graph.
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The parameters, that are calculated during the first calibration, should be transferred to PST and written into REG670 to perform a second calibration. Even if the above checks are not fulfilled, these parameters are related to the generator and better starting values than the function default values.
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Figure 26: ICT monitoring tab Trigger manually the disturbance recorder from the HMI of REG670 to have a recording related to the condition without any test resistance connected to the generator neutral. Read and record the value of RFAULT in the service values of the function STTIPHIZ.
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Click the Stop reading values from IED button (i.e. the blue stop button) in the ICT toolbar. 9.3. Retrieve disturbance recordings from REG670 by the Disturbance Handling Tool of PCM600 and save them in the PC; 9.4. Disconnect all test resistances.
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RefZ1 because this value is related to the generator and it is therefore a better value than the default one. After the values of reference impedances are set in PST, they shall be saved and written into REG670. IEC20000535 V1 EN-US...
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(including the operation at the rated temperature), trying to minimize any interruption between logfiles. During the monitoring of the generator also events of REG670 and events of DCS shall be collected. Table 14 lists an example of a sequence of generator operating conditions. Logfiles shall be captured also during the transition from one operating condition to the following one and during the transition from one reference impedance to another one.
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– start-up – synchronization – synchronized to the network and loaded –shutdown – standstill Mandatory and Required, data and files Operating condition Logfile Event list (REG670 and DCS) Standstill / Turning Gear Transition from Standstill to Static Starter Start-up (if applicable)
Check that all test resistances are disconnected from the generator neutral. Check the time of DCS, the time in the PC where PCM is running and the internal time of REG670. The time shall be synchronized in the best possible way, for example, manually setting time equally in both units.
The settings of the function STTIPHIZ shall be updated with the defined values of the reference impedances RefZ2…RefZ5, and with the selected values of RAlarm, tAlarm and RTrip. The new settings shall be written into REG670 by PST. The updated logic that selects the active reference impedances and the logic that perform any needed block of the function shall be defined in ACT (Application and Configuration Tool) and then the updated logic shall be written into REG670.
It is therefore extremely important that the time of the PC, where PCM600 and ICT run, is synchronized to the time of REG670 in the best possible way. The best option is that they are synchronized with a time difference shorter than 1 s because the resolution of events in the logfiles can be set to 1 s in ICT.
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40 V AC is injected via series capacitors and resistors into the rotor circuit. The injected voltage is fed to a voltage input of the REG670 IED. The current caused by the injection is fed to a current input of the REG670 IED via a current transformer, which is amplifying the current ten times, as shown in figure 57.
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The test should be prepared with a switch connected between the output of RXTTE4 (221) and the station earth. Initially this switch is open. First the 120 (230) V input to RXTTE4 is disconnected. This should give a signal from REG670 that the injection voltage is low.
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Connect the test set for injection of voltage and current corresponding to the mode to be used in the application. If a three phase test set is available this could be used for all the modes. If a Generator protection REG670 Commissioning manual...
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The test should verify that the energizing check function operates for a low voltage on the U-Bus and for a high voltage on the U-Line. This corresponds to an energizing of a dead bus to a live line. Generator protection REG670 Commissioning manual...
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The Limit counter function L4UFCNT can be tested by connecting a binary input to the counter and applying pulses to the counter. The speed of the pulses must not exceed the cycle time of the Generator protection REG670 Commissioning manual...
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When inserting the test handle the alarm and event signalling is normally blocked. This is done in the IED by setting the event reporting to Off during the test. This can be done when the test handle is Generator protection REG670 Commissioning manual...