UR Universal Relay Series

Transcription

1 GE Digital Energy UR Universal Relay Series Revision 4.43 Release Notes GE Publication Number: GER-4380Rev1 Copyright 2010 GE Multilin Summary Overview GE Multilin issues the UR 4.43 release that introduces new improvements for general and protection functions in the UR Family. Highlights of this release include: Bus Differential Systems B30: o B30 Changes to the 87B element (blocking command) Line Differential Systems L90: o L90 Important changes to the 87L element Optimize its response to setting group switching, comm. channel failures, comm. channel test, multiplexer loopback tests Motor Protection Systems M60 o Thermal element changes to prevents tripping and blocking Common Protection Elements: o The following elements has been modified / Enhanced: Restricted Ground Fault, Split Phase, Ground Distance, Sensitive Directional Power, Neutral and Negative sequence directional, Over-excitation, Time Overcurrent, Restricted Ground Fault, Negative Sequence Directional Communications o Faster Data File transmission o Time stamping for IEC and DNP 3.0 Events and records o Recorded values when VTs are in Delta Transducer input and output o DC ma outputs when assigned to Frequency values Platform o Improved IRIG-B noise Immunity o Programmable push buttons o Frequency values validation o Encrypted password through web browser o Contact input threshold when powering up This document contains the release notes for the 4.43 release of the Universal Relay (UR) Family. Affected products: B30, C30, C60, D30, D60, F35, F60, G30, G60, L90, M60, T35, T60 Date of release: Aug 09, 2010 Firmware revision: 4.43 GE Multilin 1

2 This document also comprises the release notes of previous 4.4x firmware versions. If uses have existing UR Family relays installed with older version of firmware, they can download and install this new firmware to benefit from the enhancements described in this release note. If the user does not require these new features and enhancements, no upgrading of the relays is required. Products Affected This release encompasses the following UR Family products: B30 Bus Differential Relay C30 Controller C60 Breaker Management Relay D30 Line Distance Relay D60 Line Distance Relay F35 Multiple Feeder Management Relay F60 Feeder Management Relay G30 Generator Management Relay G60 Generator Management Relay L90 Line Differential Relay M60 Motor Management Relay T35 Transformer Management Relay T60 Transformer Management Relay Firmware Compatibility The new 4.43 firmware that is a part of this release is compatible with the UR series hardware version 4.00 and higher. The use of the new 4.43 firmware requires the EnverVista UR Setup software to be version 4.40 and higher. 2 GE Multilin

3 FW 4.43 Release details In the following enhancement descriptions, a revision category letter is placed to the left of the description. Refer to the Appendix at the end of this document for a description of the categories displayed. Bus Differential Systems B30 F Bus differential element 87B has been changed to prevent mis-operation due to an unblocking command. Applicable: B30, B90*. The 87B element has a Block setting that allow users to block the element s operation previous or after a fault condition. If during a block condition generated after the 87B element operates, the fault condition is removed and then the block on the element is removed as well, the 87B element misoperates. This firmware release ensures that 87B will not misoperate when the block condition is removed under the described conditions. Users that have the block setting of the differential function set to disable, are not affected by this exception. If the block setting of the differential element is being used, it is recommended to upgrade the firmware. Line Differential Systems L90 F L90 was improved to ensure the line differential element reads all the required sources when switching settings groups and having more than one local current source. Applicable: L90. The 87L element can be set to use up to four local current sources signal sources (e.g. breaker and a half schemes where two CTs are connected to a single L90). When the 87L element is set to use more than one current source and the setting group is changed, the 87L element might read only the first current source (signal source 1). This firmware version improves the setting group change routine to guarantee that all the current sources set to the differential element are read when switching from one setting group to another one. If the L90s in your line differential scheme are connected to a single CT source on both terminal or use a single setting group, no action is required. If the L90s in your line differential scheme are connected to more than one CT source in at least one terminal and more than one setting group is configured, then proceed to update the relay s FW version. GE Multilin 3

4 F L90 s test functionality was enhanced to prevent miss-operation while performing communication tests. Applicable: L90. Internal algorithms were improved so that a remote loopback test does not cause a miss-operation of the 87L element when working in a two terminals-redundant channel scheme. The previous FW versions showed up that, after experiencing both channel fail and channel ID fail alarms in one channel, the 87L element could miss operate if a remote loopback test had performed on the same failed channel. GE Multilin strongly recommends that, once the relays be in service, users must freeze (via UR Setup software) or disconnect (via hardwire) the trip contact output before performing any kind of test. U 443-3a Enhanced two-terminal Inter relay communication ensures 87L goes back to normal after a channel fail is cleared and prevents events flooding Applicable: L90. This firmware version ensures that, for two terminal-single channel applications, the inter-relay communication link goes back to normal once a communication failure is cleared. Previous firmware version showed that, channel fail and PFLL operands oscillated every 10 seconds when a channel fail alarm had appeared, so the 87L element didn t return to normal operation and the event recorder was flooded. U 443-3b Changes on the three-terminal Inter relay communication ensure 87L goes back to normal when Channel and PFLL alarms are reset Applicable: L90. This firmware version ensures that, for three terminal applications, the inter-relay communication link returns to normal operation in the case that, in one terminal, both communication channels fail and then just one comes back. In previous version, channel fail and PFLL operands started to oscillate, so that one communication link didn t return to normal operation. U L90 s inter-relay communication for three-terminal schemes was improved to ensure the devices restore communication between them after a real failure is cleared on at least one of the two comm. Applicable: L90. As a standard behavior, a three terminal line differential schemes will raise the PFLL Fail (synchronization) and CH fail operands on all three terminals when both comm. channels fail in one terminal, However, if only one channel goes back to normal all terminal might stay showing PFLL fail and CH Fail, and then either the communication or the differential protection are not restored. C L90 s redundant inter-relay communication for two-terminals schemes was improved to ensure the correct data is received by channel 2 when a loopback test is performed on the multiplexer Applicable: L90. This FW version introduces separate receiving buffers per channel to the inter-relay communication modules. These independent buffers ensure that, for two-terminals redundant channel with multiplexer schemes, the channel 2 will receive and process the right direct input status when a loopback test is performed to channel 1 on the multiplexer side. Previous FW versions might allow channel one to overwrite the direct input status with its default value when the described loopback test is performed. 4 GE Multilin

5 If your line differential scheme is having direct communication between the L90 devices, this issue does not affect them. For customer having schemes with multiplexers, standard maintenance procedures request protection devices to be isolated from the breaker(s) when a function related to the protection elements within the device is being tested. If your maintenance procedures fit to this criteria, there is no risk of misoperation on your system. Otherwise, your device FW version must be upgraded. C L90 s redundant inter-relay communication for two-terminals schemes was improved to ensure relays in both terminals keep on synchronization after performing a loopback test on the multiplexer Applicable: L90. Some multiplexers available on the market, allows users to perform a loopback test on the local unit while still sending data to remote end. As a consequence L90s with redundant channels and communicating through this kind of multiplexers might lose synchronization between them while one channel is being tested (PFLL fail activated) and stay latched in that condition after the test. This FW version adds the ID Fail status to the data stream used for the inter relay communication modules. This ID fail status allows the remote L90 to detect the channel under loopback test condition and then it only uses the other channel for synchronization. This way synchronization is never lost. If your line differential scheme is having direct communication between the L90 devices, this issue does not affect them. M60 Motor Protection System F Changes to the Thermal model element prevent an inadvertent trip event when the relay is powered-up after replacing the PWR supply or pulling out and back in the CPU module. Applicable: M60. The motor thermal protection element has been modified to ensure that it does not trip when the relay is powered up after the CPU module is disconnected from the battery on the PWR supply module. This condition is met when pulling out-and-back in either the CPU or PWR supply module, or when replacing the power supply module. Previous firmware versions might allow the Thermal protection element to misoperate when under the described conditions. If end-users maintenance procedure requests the motor to be stopped or your trip command to be isolated when working on the protection relay, the described exception does not affect your motor protection scheme. However, the thermal element could operate so your relay has to be reset before it goes back to service. If your relay s FW version matches any of the listed below no action is required. FW versions that fix this issue: 4.43, 5.24, 5.54, GE Multilin 5

6 U Enhanced thermal overload element prevents permanent lockout after a motor thermal overload trip when the element is disabled or the relay is powered off. Applicable: M60. When the thermal overload element 49 operates, it is intended to go to a lockout state until the motor temperature returns to a safe level. This is known as motor cooling time, and the thermal lockout automatically resets after this period. However, there were specific situations where the Thermal overload element may trip and stay permanently locked out unless an emergency re-start is performed. These conditions are: 1. When in thermal lockout state, the thermal element is disabled and, after the motor cooling time has elapsed, the thermal element is enabled again. It is important to remark that changing settings during a thermal lockout is not a normal procedure. 2. When in thermal lockout state, the relay is powered off and, after the motor cooling time has elapsed, the relay is powered on again. Under these conditions the thermal lockout remained on until an emergency re-start command was performed. Users who perform procedures as described above are advice to update the FW version to Common Protection Elements F Restricted Ground Fault element to ensure correct operation when phase currents are > 13*CT Applicable: T60, G30, G60 The Restricted Ground Fault element was enhanced to ensure the relay will operate correctly when currents incoming from phase CTs are higher than thirteen times the nominal CT current (13*CT). E The Split Phase element to ensure its proper operation on phases B and C when time delay setting is set to zero. Applicable: G30, G60. An enhanced Split phase element ensures a proper operation on detection of a split phase condition on phases B or C and having a time delay setting of zero. In previous firmware versions, the split phase element would not operate when detecting a split phase condition on phases B or C when the time delay was set to zero E Ground distance elements have been improved to increase selectivity when facing three-phase or phaseto-phase faults and remote single pole tripping. Applicable: D30, D60, G60, L90, T60. The ground distance protection algorithm was modified to have an enhanced over-current supervision that incorporates a positive sequence restraint factor. Zero-sequence current is a vital quantity for ground distance elements correct operation. However, spurious zero-sequence current resulting from CT saturation and CT errors, switch-off transients during double-line and three-phase faults and system unbalance, may lead to improper operation of ground distance element. To increase ground distance security during multi-phase faults with specifically low settings of OC supervision, a positive sequence current restraint of 5% was added to over-current 6 GE Multilin

7 supervision. Now current value has to be higher than [In-0,05 x I_1] in order to release ground distance operation. This enhancement allows the ground distance element to deal with ground faults while having a remote single pole open scenario. These changes increase the Ground distance element selectivity ensuring additional tripping security. M Sensitive directional power element to correctly update its actual value when the element is in blocked state. Applicable: G30, G60, F60, M60, N60. * This firmware version ensures that sensitive directional power actual value shown by the relay is properly updated when the sensitive directional power element is blocked. Previous firmware versions allow this value to freeze on the value the relay showed just before the element was blocked. This issue doesn t affect the correct operation of the protection element, just the power value that is shown. E Neutral and Negative sequence directional elements 67N and 67_I2 ensure proper selectivity when negative sequence current is zero. Applicable: C70, D30, D60, F60, G30, G60, L60, L90, M60, T60. * Neutral directional element 67N and Negative sequence directional element 67_I2 have an additional supervisor unit that blocks these protection elements if either the polarizing voltage or the operating current are below the cutoff levels. Current and voltage cutoff levels are defaulted at 0.02pu. P The Over-excitation element has been modified to meet its time specification Applicable: G30, G60, T60 The Over-excitation element has been enhanced to ensure it will operate according to the time that is claimed on the relay s instruction manual when measured V/Hz values are close to the pickup level. Previous firmware version may allow the over-excitation element to operate faster than specified. Users that are have configured this protection element to protect / trip their assets should upgrade the FW version of their devices. P Changes on the Time Overcurrent Elements TOC ensure correct operation time when the relay status is change from Not Programmed to Programmed Applicable: B30, B90, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60. * All TOC elements have been modified to ensure the element is inactive when the relay is in Not Programmed status. Previous FW versions allow the TOC elements to run while in the described condition, so if there were a fault while changing the relay status to Programmed (setting change required), the TOC elements may operate faster than specified. Standard maintenance procedures request users to block or disconnect trip commands (Eg. through test blocks, freezing contact outputs, etc) while working on the protective relays. If your procedures do not fulfill this, upgrading your devices firmware version is advisable. All previous FW versions are affected. GE Multilin 7

8 F Changes to the Restricted Ground Fault protection Element ensure proper operation when sensing balanced and extremely long DC offset currents. Applicable: T60, G30, G60 The 87RGF element has been modified to improve its selectivity when sensing faults that have long DC constants and relatively low and balanced currents. These conditions may create stability problems to the device, which might mis-operate. If this protection element is configured to trip your asset, we strongly recommend you to upgrade your device s firmware version. E The Negative Sequence Directional Overcurrent element has been enhanced to deliver additional security during phase-to-phase faults Applicable: D30, D60, F60, G30, G60, L60, L90. * The Negative Sequence Directional Overcurrent 67_2 element has been enhanced with a restraint factor that increases the element security when positive sequence current values are higher than 0.8pu (high fault-currents that are typical for phase-to-phase faults). This restriction is enabled when the element is set to operate on the Zero-sequence current. In addition to this, the operating current formula has been modified to consider a bigger portion of the positive sequence current when compared with the negative sequence component. This also increases the element security Communications E Faster Data File Transmission Applicable: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L60, L90, M60, N60, T35, T60. * UR Relays now use the TFTP ports to transmit data files reducing the transmission time. E.g. event records, oscillography, fault reports, data logger. R DNP 3.0 and IEC protocols have been modified to ensure an accurate time stamping of binary signal Applicable: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L60, L90, M60, N60, T35, T60. * The binary point scan routine of DNP 3.0 and IEC protocols was improved for correctly time stamping. Previous FW version might show a difference of +/- 2ms between the relay s SOE and DNP/IEC 104 time stamp. UR devices which FW version is 4.80 or later are not affected by this issue. 8 GE Multilin

9 Events and Records R Improved Fault Report guarantee accurate records when VTs are in delta Applicable: B30, B90, C60, C70, D30, D60, F35, F60, G30, G60, L60, L90, M60, T35, T60. * UR fault report algorithm has been improved to ensure accurate fault records. In previous firmware versions, in cases where VTs were in Delta configuration and new fault records were substituting old records in memory, the voltages values could not be recorded. Transducer Inputs and Outputs M Transducer DCMA outputs have a new pu-base value when assigned to frequency values Applicable: B30, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60. * Platform The transducer DC mili-amps output elements were modified to have a new pu-base value when the setting field DCMA output source of an analog output element is set to frequency values. The new pubase value is 1Hz (1pu = 1Hz). Previous firmware versions have a pu-base value of 1pu = 100Hz. Customers using the transducer DC mili-ampere output to represent frequency values are advice to review their settings and re-test this function after upgrading their device with this FW version All previous FW versions are affected. B Improved IRIG-B noise immunity. Applicable: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L60, L90, M60, N60, T35, T60. * IRIG-B inputs were enhanced to reduce noise sensitivity by rejecting short duration input pulses (lower than 250micro-sec). In previous firmware version, on the condition that a DC Shift IRIG-B signal had been set and a high frequency noise came in through IRIG-B inputs, the relay could reboot. D Preventing programmable push buttons from latching up when pressing more than one simultaneously Applicable: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L60, L90, M60, N60, T35, T60. * The Internal control algorithm of programmable push buttons was improved to ensure that none of them would latch when more than one buttons are pressed simultaneously. F Enhanced validation method on the frequency measurement adds more security to the df/dt frequency element when frequency values are read from the auxiliary voltage input. Applicable: F35, F60, G30, G60, L30, M60, N60, T60. * This firmware version introduces a new method to validate the frequency values that are used for all the frequency elements to operate. This changes increases the consecutive quantity of validated frequency values needed to update the frequency measurement before it is used for the frequency elements. GE Multilin 9

10 The change ensures the correct operation of the df/dt element when sensing transitional frequency changes through the single phase auxiliary voltage input. For customers that are using the df/dt frequency elements linked to the auxiliary voltage input, updating their relays is recommended. G UR devices to show the encrypted form of the password when communicating with a PC through web browser software. Applicable: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60. * The UR devices support communication through standard web-browser software such as Internet Explorer. Customers using this medium to access to the relay s modbus memory map may see that the encrypted form of the password is not shown on the respective addresses (4000, 4002). This firmware version ensures the encrypted form of the password is shown in the respective address when users connect with the relay using web-browser software. R Contact Inputs: correction to contact input operation during power on Applicable: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60. * A contact input state can change when the relay is first powered on and the contact input voltage level is above 17 V, but below a higher threshold setting for the input. In previous revisions, the input state would then revert back to OFF after 1/8th of a power cycle. However, the input should not register a state change unless the input voltage exceeds the threshold setting and remains above the hysteresis level. For example, if Threshold = 33 V Voltage at input at time of control power applied = 24 V then the relay would record a state change of ON then OFF. On previous f/w releases, a debounce time greater than 4ms would prevent inadvertent assertion of the contact input operand during relay power up. So your relay debounce time is set higher than 4ms, your device is not affected by this issue. 10 GE Multilin

11 (Previous) FW 4.42 Release details In the following enhancement descriptions, a revision category letter is placed to the left of the description. Refer to the Appendix at the end of this document for a description of the categories displayed. Communications C IEC61850 client/server communication was enhanced to allow file transfer after a broken connection Applicable: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L60, L90, M60, N60, T35, T60. UR relays were enhanced to ensure that a data file transfer to a MMS client will re-start properly after a broken Ethernet link. Relays with previous firmware versions showed that, if the Ethernet connection got broken while the relays were transmitting a data file to the MMS client, relays weren t able to restart the transfer process once the communication had recovered. GE Multilin 11

12 FW 4.41 Release details In the following change descriptions, a revision category letter is placed to the left of the description. Refer to the appendix at the end of this document for additional details. Modified features C Communications: L90 2-Terminal peer-to-peer communications improved Products affected: L90 relay The L90 peer-to-peer communications has been improved to ensure that on a 2-terminal 2-channel system, the local relay will be able to establish a PFLL Lock after power has been cycled on the remote relay. The previous firmware version would occasionally cause the local L90 to not be able to establish the PFLL Lock upon cycling power on the remote relay. This issue did not affect L90 s operating in a 3-terminal configuration. C Communications: UCA Client-Server Ethernet Release Function Improved Products Affected: All UR relays The UCA Client-Server Ethernet communications was improved in the UR family of products to correct an issue that was introduced in firmware version 4.40 that caused the relay to not release it s UCA Ethernet connection when the hardware link to the relay was disconnected. The Universal relay would previously not allow any new UCA Ethernet connections to be made if the three available UCA Ethernet connections were made unavailable by subsequent hardware disconnections. Cycling power to affected relays would free up all of the ports and allow new Ethernet connections. The UCA GOOSE Peer-to-Peer communications was not affected when the UCA Client-Server functionality was locked out and continued to operate properly. 12 GE Multilin

13 Upgrade paths It is our recommendation that all customers upgrade to the latest version of UR-series firmware to take advantage of the latest developments and feature enhancements. Firmware upgrades can be easily performed using the EnerVista UR Setup software. This software can also convert settings files from an older version to the latest version and provides a Difference Report once the conversion has been completed. This Difference Report identifies new settings and additional information to assist the user during the upgrade. Upgrade path for versions 4.00 and above For UR-series devices installed with versions 4.00 firmware and above, the revision 5.60 release can be uploaded to the relay using the EnerVista UR Setup software. Upgrade path for revisions below version 4.00 For UR-series devices installed with versions of firmware below 4.00, an upgrade package must be obtained from GE Multilin to upgrade the relay CPU and CT/VT modules. Benefits of revision 4.00 and above: The benefits of revision 4.00 and above are as follows: Supports many new features and functionality IEC communications protocol 100 Mb Ethernet IRIG-B repeater Isolated RS485 and IRIG-B Synchrophasors in the D60, L90, N60 & G60 Support for Breaker-and-a-Half Transmission Line Protection (D60, L90) Motor Health Diagnostics (M60) Enhanced Front Panel Exceeds new IEEE C37.90 requirements - Transient immunity (2 to 4 kv) GE Multilin 13

14 Appendix Change categories This document uses the following categories to classify the changes. Table 1: Revision categories Code Category Comments N New feature A separate feature added to the relay. Changes to existing features even if they significantly expand the functionality are not in this category G Change A neutral change that does not bring any new value and is not correcting any known problem E Enhancement Modification of an existing feature bringing extra value to the application D R Changed, incomplete or false faceplate indications Changed, incomplete or false relay records Changes to, or problems with text messages, LEDs and user pushbuttons Changes to, or problems with relay records (oscillography, demand, fault reports, etc.) C Protocols and communications Changes to, or problems with protocols or communication features M Metering Metering out of specification or other metering problems P Protection out of specification Protection operates correctly but does not meet published specifications (example: delayed trip) U Unavailability of protection Protection not available in a self-demonstrating way so that corrective actions could be taken immediately H Hidden failure to trip Protection may not operate when it should F False trip Protection may operate when it should not B Unexpected restart Relay restarts unexpectedly The revision category letter is placed to the left of the change description. GE Multilin technical support GE Multilin contact information and call center for product support is shown below: GE Multilin 215 Anderson Avenue Markham, Ontario Canada L6E 1B3 Telephone: or (North America), (Europe) Fax: (North America), (Europe) multilin.tech@ge.com Home Page: 14 GE Multilin