XRIO Converter Manual Schweitzer SEL 311C R112 ENU TU2.30 V1.000

OMICRON PTL SEL 311C XRIO Converter User Manual

OMICRON electronics GmbH 1/8

OMICRON PTL

XRIO Converter

SEL 311C

User Manual

V1.000



Contents

1 General information ............................................................................................................................ 3

2 Quick start information ...................................................................................................................... 3

3 Using the converter ............................................................................................................................ 4

4 Required software version ................................................................................................................. 4

5 Functional range ................................................................................................................................. 4

6 Not supported functions .................................................................................................................... 4

7 OMICRON test philosophy ................................................................................................................. 5

8 Relay setting import ........................................................................................................................... 5

9 Converter structure ............................................................................................................................ 6

9.1 SEL 311C section .......................................................................................................................... 6

9.1.1 Relay Parameter Section .......................................................................................................... 6

9.1.2 Additional Information ............................................................................................................... 6

9.1.3 RIOplus (Advanced view) ......................................................................................................... 7

9.1.4 Template Controller (Advanced view) ....................................................................................... 7

9.2 RIO ................................................................................................................................................ 7

9.2.1 Distance ................................................................................................................................... 7

9.2.2 Distance with Out of Step zones ............................................................................................... 7

9.2.3 Overcurrent (51P/51G/51Q) ...................................................................................................... 8

9.3 Specific features ............................................................................................................................. 8

9.3.1 Distance protection ................................................................................................................... 8

9.4 Handling the infinity value ............................................................................................................... 8



1 General information

The SEL 311C XRIO converter is designed for use with the OMICRON Test Universe 2.30 software for testing SEL-311C distance protection relays. The converter provides all necessary data for testing the distance and overcurrent functions of the SEL-311C relays. The following software version and functional range is modeled in this converter:

Manufacturer: Schweitzer Engineering Laboratories

Model: SEL-311C

Version: 005

Firmware: R112

Note: This converter is designed for the SEL-311C relay with the part number listed above. It may work with similar relays, too.

2 Quick start information

To work with the SEL 311C XRIO converter:

1. Start a new OMICRON Control Center (OCC) document or open an existing OCC document.

2. Open the test object.

3. On the File menu, click Import.

4. Browse to the SEL 311C.xrio file.

5. Click Open.

6. Enter all necessary settings in the Relay Parameter and the Additional Information General, Power System Data and section.

7. Insert +inf. (infinity) to the XRIO converter to disable setting/functions, if necessary. Note, the value "+inf." in the converter is equal to the value "OFF" in the relay software.

8. Click OK.

Figure 1: Opening and importing the SEL311C converter



3 Using the converter

The SEL 311C XRIO converter can be used as a stand-alone converter or in association with a relay specific test template, for example with the OMICRON Distance Protection template for the SEL-311C relay.

In any way the converter is used, follow the quick start instructions and create your test by using LinkToXRIO or start using the relay specific test template (for more information, see the test template documentation).

4 Required software version

To use this converter, you must have a valid license for the OMICRON Test Universe 2.30 software or higher.

5 Functional range

21 Phase Distance protection

Ground Distance protection (quadrilateral and mho characteristic)

67P Phase Definite Time/Instantaneous Overcurrent

67G Residual Ground Definite Time / Instantaneous Overcurrent (stages 3 and 4 only as instantaneous)

67Q Negative-Sequence Definite Time / Instantaneous Overcurrent (stages 3 and 4 only as instantaneous)

51P Phase Time Overcurrent

51G Residual Ground Time Overcurrent

51Q Negative-Sequence Time Overcurrent

For some of the functions listed above, use the RIO interface of the Test Universe software. Consequently, the test modules are configured automatically without using LinkToXRIO.

The following functions are using the RIO interface:

21 Phase and Ground Distance Protection

51 Phase / Residual/ Negative Sequence Time Overcurrent

For testing the other functions, you must use LinkToXRIO.

6 Not supported functions

The following functions are not supported:

Switch onto Fault

Out of Step Protection (only the impedance characteristic is supported)

Reclosing and Manual Close

Breaker Monitor

The Directional Element (32Q,32V and 32I)

Communication Assisted Tripping Schemes

Voltage Elements

Synchronism Check



7 OMICRON test philosophy

The OMICRON test strategy is described in the OMICRON Protection Test Template (PTT) Distance documentation. For detailed information, see the PTT Distance documentation.

8 Relay setting import

For automatic input of the relay parameters an import filter is available for the SEL-311C. It can be found for free download in the customer area (www.omicron.at). Export the settings (Device and Logic sections) from AcSELerator software in ".txt" format first. To use the import filter click in the Test Object on File/Import relay settings.

Figure 2: Select the Filter for SEL 5010-5030.txt Setting

The next step is to select "Filter for SEL 5010-5030 .txt Settings" and click OK and import the exported the two txt files for the device and logic settings.

After the relay settings have been imported successfully, a message box showing the number of imported parameters appears.

Figure 3: Report after successful parameter import

Additionally, the imported parameters are shown as information in the Error View of the Test object. When the import of a parameter fails, it gets shown as an error or warning in the error view.

Figure 4: Error View with the information about imported parameters



9 Converter structure

The converter is divided into two sections: the SEL-311C section and the RIO section. Both sections consist of several function blocks. The converter comes up in the standard view; the RIOplus section and the Template Controller section can only be seen in the advanced view

9.1 SEL 311C section

The SEL 311C section is divided into four groups: the Relay Parameter Section, the Additional Information section, the RIOPlus section and the Template Controller section.

9.1.1 Relay Parameter Section

The Relay Parameter Section includes the parameters which have to be changed by the user. All relay parameters are included in this section and have to be set to the actual relay values. The parameters are grouped and named as in the AcSELerator software. Each parameter in this block can be identified by a Foreign ID, which is identical to the parameter name exported by the AcSELerator software

Figure 5: Parameters in the Relay Parameter Section

9.1.2 Additional Information

This block contains additional data for testing the SEL-311C relay functionality. The block is divided into the following sections:

General section includes detailed information needed for the test report like manufacturer, device type, substation name etc. This section includes parameters which have to be changed by the user according to the customer relay type and substation.

Power System Parameters section includes power system configuration information which is needed for testing the relay protection function with OMICRON Test Universe software, e.g. CT or VT dimensioning settings. This section includes parameters which have to be changed by the user according to relays application.

Relay Information section - This block has been added for relay specific parameters such as tolerances which cannot be set by the user, because they are constant values. All values (technical data) set in this block can be found in the relay manual. Typically, these blocks do not have to be changed, as they are already set to the values given in the user manual of the relay.

Circuit Breaker Information section includes information which is required for the CB test.

Test Tolerance section includes an additional test tolerance to calculate the start and end value for trip and pickup tests by using the OMICRON TU Ramping module.



Configuration details this section contains information on trip logic of distance and overcurrent protection elements. These values are initially linked to direct trip (TR) logic equation. Due to numerous possibilities of configuring trip outputs in the SEL-311C relay, these parameters need to be confirmed by the user prior to testing. If the automatically generated configuration doesn't correspond fully to your setting please remove links (Advanced view) and adjust it by hand.

Figure 6: Configuration details distance protection

9.1.3 RIOplus (Advanced view)

The RIOplus block acts as an interface between the relay and system data and the test modules. The block is needed for the RIO parameter conversion or to link the RIOplus parameters directly to the test modules (e.g. State Sequencer or Ramping). The RIOplus section is divided into different sub-blocks, which include either relay information or which are built especially for a certain protection function. The sub-blocks for these protection functions include all the data for testing the respective functions.

9.1.4 Template Controller (Advanced view)

The Template Controller block contains special test data, which cannot be mapped in the standardized RIOplus section, like e.g. activation flags for modules in the test template. This block can be increased by new customized blocks and parameters for testing protection function, which are not included in the OMICRON SEL 311C XRIO Converter.

9.2 RIO

The RIO section of the converter contains all specialized RIO functions which are needed to use the more specialized test modules (like Advanced Distance or Overcurrent) provided by the OMICRON Test Universe software.

Note: Do not edit RIO test object settings. Changing in parameters could disable formulas in the RIO section.

9.2.1 Distance

This RIO distance function provides the necessary values for testing the distance protection functions of the SEL-311C relay with the Advanced Distance test module. The protection functions supported by this RIO function are:

21 Phase Distance Protection (Mho characteristic)

21 Ground Distance Protection (Mho characteristic)

21 Ground Distance Protection (Quad characteristic)

Load Encroachment characteristic

9.2.2 Distance with Out of Step zones

This RIO distance function provides visualization of distance protection zones and out of step (blocking /tripping) elements for modules like NetSim, Ramping or Pulse Ramping e.g. to help performing power swing blocking tests. This RIO block is not compatible with the Advanced Distance test module.



9.2.3 Overcurrent (51P/51G/51Q)

This RIO overcurrent function provides the necessary values for testing the overcurrent protection functions of the SEL-311C relay with the Test Universe Overcurrent test module. The protection functions supported by this RIO function include:

51P Phase Time Overcurrent

51G Residual Ground Time Overcurrent

51Q Negative Sequence Time Overcurrent

9.3 Specific features

This section deals with special requirements of some of the converter's functions. Functions not listed here have no known limitations to their functionalities.

9.3.1 Distance protection

9.3.1.1 Directional elements

The directional element setting may cut off some part of distance characteristic, depending on its settings. In this case the relay will not trip inside a distance zone.

As the directional element of the SEL-311C relay is a dynamic element, it cannot be molded properly in the Advanced Distance test module used for the distance characteristic testing.

The mho characteristic modeled in the XRIO converter is only valid for constant test current method. In case the constant source impedance method is used for testing then the characteristic is different from the shown characteristic of the impedance plane. This happens due to the test voltage and test current dependency of the dynamic expanding Mho characteristic.

9.3.1.2 Compensator distance

The compensator distance elements are modeled only for phase-to-phase fault loops. As these elements supervise also the phase-to-phase-to-ground loops its possible that they trip also for phase-to-ground loops.

9.4 Handling the infinity value

The infinity value has to be set to +inf. in the SEL-311C section of the converter. It is used instead of the "OFF" value in the relay. Consequently, the protection functions that are disabled by setting them to "OFF" in the relay behave the same way in the converter.

Documents

XRIO Converter Manual Schweitzer SEL 311C R112 ENU TU2.30 V1.000