GE D30 Instruction Manual

Also see for D30 series: Communications manual Communications guide Instruction manual Instruction manual Instruction manual

Contents

5-16 D30 Line Distance Relay GE Multilin5.2 PRODUCT SETUP 5 SETTINGS5PATH: SETTINGS Ö PRODUCT SETUP ÖØ COMMUNICATIONS ÖØ DNP PROTOCOL Ö DNP NETWORK CLIENT ADDRESSESThe DNP UNSOL RESPONSE FUNCTION should be “Disabled” for RS485 applications since there is no collision avoidancemechanism. The DNP UNSOL RESPONSE TIMEOUT sets the time the D30 waits for a DNP master to confirm an unsolicitedresponse. The DNP UNSOL RESPONSE MAX RETRIES setting determines the number of times the D30 retransmits an unsolic-ited response without receiving confirmation from the master; a value of “255” allows infinite re-tries. The DNP UNSOLRESPONSE DEST ADDRESS is the DNP address to which all unsolicited responses are sent. The IP address to which unsolic-ited responses are sent is determined by the D30 from the current TCP connection or the most recent UDP message.The DNP scale factor settings are numbers used to scale analog input point values. These settings group the D30 analoginput data into the following types: current, voltage, power, energy, power factor, and other. Each setting represents thescale factor for all analog input points of that type. For example, if the DNP VOLTAGE SCALE FACTOR setting is set to “1000”,all DNP analog input points that are voltages will be returned with values 1000 times smaller (for example, a value of 72000V on the D30 will be returned as 72). These settings are useful when analog input values must be adjusted to fit within cer-tain ranges in DNP masters. Note that a scale factor of 0.1 is equivalent to a multiplier of 10 (that is, the value will be 10times larger).The DNP DEFAULT DEADBAND settings determine when to trigger unsolicited responses containing analog input data. Thesesettings group the D30 analog input data into the following types: current, voltage, power, energy, power factor, and other.Each setting represents the default deadband value for all analog input points of that type. For example, to trigger unsolic-ited responses from the D30 when any current values change by 15 A, the DNP CURRENT DEFAULT DEADBAND settingshould be set to “15”. Note that these settings are the deadband default values. DNP object 34 points can be used tochange deadband values, from the default, for each individual DNP analog input point. Whenever power is removed andre-applied to the D30, the default deadbands will be in effect.The D30 relay does not support energy metering. As such, the DNP ENERGY SCALE FACTOR and DNP ENERGYDEFAULT DEADBAND settings are not applicable.The DNP TIME SYNC IIN PERIOD setting determines how often the Need Time Internal Indication (IIN) bit is set by the D30.Changing this time allows the DNP master to send time synchronization commands more or less often, as required.The DNP MESSAGE FRAGMENT SIZE setting determines the size, in bytes, at which message fragmentation occurs. Largefragment sizes allow for more efficient throughput; smaller fragment sizes cause more application layer confirmations to benecessary which can provide for more robust data transfer over noisy communication channels.When the DNP data points (analog inputs and/or binary inputs) are configured for Ethernet-enabled relays,check the “DNP Points Lists” D30 web page to view the points lists. This page can be viewed with a webbrowser by entering the D30 IP address to access the D30 “Main Menu”, then by selecting the “DeviceInformation Menu” > “DNP Points Lists” menu item.The DNP OBJECT 1(32) DEFAULT VARIATION settings allow the user to select the DNP default variation number for object types1, 2, 20, 21, 22, 23, 30, and 32. The default variation refers to the variation response when variation 0 is requested and/orin class 0, 1, 2, or 3 scans. Refer to the DNP Implementation section in Appendix E for additional details.The DNP binary outputs typically map one-to-one to IED data points. That is, each DNP binary output controls a singlephysical or virtual control point in an IED. In the D30 relay, DNP binary outputs are mapped to virtual inputs. However, somelegacy DNP implementations use a mapping of one DNP binary output to two physical or virtual control points to supportthe concept of trip/close (for circuit breakers) or raise/lower (for tap changers) using a single control point. That is, the DNPmaster can operate a single point for both trip and close, or raise and lower, operations. The D30 can be configured to sup- DNP NETWORK CLIENT ADDRESSESCLIENT ADDRESS 1:0.0.0.0Range: standard IP addressMESSAGE CLIENT ADDRESS 2:0.0.0.0Range: standard IP addressMESSAGE CLIENT ADDRESS 3:0.0.0.0Range: standard IP addressMESSAGE CLIENT ADDRESS 4:0.0.0.0Range: standard IP addressMESSAGE CLIENT ADDRESS 5:0.0.0.0Range: standard IP addressNOTENOTE