DIGITAL RELAY OF PROTECTION AND AUTOMATION SERIES PC83 AND PC830
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1 DIGITAL RELAY OF PROTECTION AND AUTOMATION SERIES PC83 AND PC830 PC83 and PC830 series devices are designed to perform the relay protection functions and kv networks automation, have different functionality with common design features and main technical characteristics. DESIGN Structurally, the PC83 and PC830 are performed in the form of a block frame with functionally completed modules - "Typical Elements of Substitution" (TES). Each TES is a single board design with built-in front of the connection through the backplane to the inside circuit device and the terminal at the rear for external connections. Connectors and terminals for external connections are fixed to the vertical metal plate, which is the completion of TES and at the same time part of the rear wall of the device. GENERAL FEATURES OF PC83, PC830 SERIES Flexible modular design, standardization of modules, high maintainability. Extended operating temperature range (from -40⁰C to + 70⁰C). Advanced voltage supply range (from 48V to 450V) AC / DC. One service software for all devices. Average lifetime (25 years).* * Subject to timely conduct routine maintenance devices. 1
2 FUNCTIONS AND FEATURES OF РС83 AND РС830 RELAYS Function Code ANSI 1 Transformer differential protection 87P 2 Overexcitation (block differential protection by the 5th harmonic) 24 3 Monitoring the magnetizing current (block differential protection by the 2nd harmonic) 4 Phase distance protection with any of the three characteristics: polygon, circle(ellipse), sector of circle 21P 5 Power swing blocking 68 6 Load encroachment 7 Blocking distance protection at voltage circuits faults 8 Phase directional overcurrent protection 67P 9 Phase instantaneous/time overcurrent protection 50/51P 10 Overcurrent protection with voltage restraint 51V 11 Ground distance protection with any of the three characteristics: polygon, circle (ellipse), the sector of the circle 21G 12 Single-phase directional overcurrent protection (2 analog inputs of free appointment) Neutral directional overcurrent protection 67N 14 Instantaneous/time overcurrent protection of zero sequence at the measured current 50/51G 15 Instantaneous/time overcurrent protection of zero sequence at the rated current 50/51N 16 Sensitive overcurrent protection of zero sequence for electrical power networks with compensated neutral 50/51NC 17 Overvoltage protection 3Uo or start of ground protection from the measured 3Uo 59N 18 Negative sequence overcurrent protection Phase undervoltage protection Phase overvoltage protection Negative sequence overvoltage protection Synchrocheck Underfrequency 81U 24 Overfrequency 81О 25 Breaker failure 50BF 26 Auto recloser Blocking, self-retaining Breaker close/trip circuit monitoring TSC 29 Voltage circuits monitoring VTS 30 Arc protection with fiber optic sensor and the current monitoring 31 Fault location (km) 32 Automatic voltage control for tap changer and supervision 33 Central alarm system s logics 34 Ethernet communication port (optional optical or electrical). Protocol IEC-61850, MODBUS TCP 35 RS 485 port, USB, communication via Modbus RTU 36 Event log, alarm log, disturbance recorder 37 Digital Inputs, pcs 38 Relay Outputs, pcs 39 Analog inputs (current), pcs 40 Analog inputs (voltage), pcs 41 LEDs: alarms, failures and user-programmable, pcs 42 The number of setting groups 43 The option to switch setting groups in the direction of power 2
3 FUNCTIONS AND FEATURES OF РС83 AND РС830 RELAYS РС83-АВ2 РС83-ДТ2 РС83-А2М РС83-А2.0 РС83-В1 РС83-В4 РС83-С РС830-ДЗ РС830-ДТ3 (РС830-Т2) РС830-В2 1 2 steps 2 steps zones steps steps 4 steps 3 steps + 6 steps zones 12 2 steps 13 2 steps 2 steps 2 steps steps с steps steps 18 2 steps 2 steps 2 steps 2 steps 2 steps 2 steps 19 2 steps 2 steps 2 steps 4 steps 20 2 steps 2 steps 21 2 steps 2 steps steps 24 2 steps steps 2 steps 2 steps 2 steps 2 steps 2 steps step 1 step 1 step /13/18 8/13/18 8/13/18 6/ /22 11/22 11/ /12/16 8/12/16 8/12/16 8/ /20 10/20 10/ (7)
4 ADVANTAGES DIGITAL RELAY OF SERIES PC83 Integrated solutions for the entire substation AC and DC power supply, versions with an additional performance power-current and deshunting Cold start period ms Voltage loss hold-up ms duration Low power consumption, size and weight Low Price PURPOSE Protection, automation, control, alarm, measurement, telemechanization and data transmission for substations and connections kv. KEY FEATURES OF РС83 Transformer differential protection. Automatic CT ratio matching and vector group compensation. Instantaneous Differential. Transformer differential protection. Phase directional overcurrent protection. Neutral directional overcurrent protection. Phase overvoltage protection. Phase undervoltage protection. Negative sequence overvoltage protection. Overvoltage protection 3Uo or start of ground protection from the measured 3Uo. Negative sequence overcurrent protection. Logical busbar protection. Acceleration of overcurrent protection. Breaker failure. 2 settings group. Automatic switching-in of reserve. Automatic recloser. Automatic voltage control for tap changer and supervision. Event log, alarm log, disturbance recorder. Fault location (km). Arc protection with fiber optic sensor and the current monitoring. MEASURING, RECORDING, ALARM Measurement of voltages and currents of phases. Measurement of voltage and zero-sequence current. Measurement of angles between the phase currents, voltages, as well as currents and voltages of zero sequence. Digital Oscilloscope at 60 s (record format COMTRADE), fault recorder on 100 events, the event log on 200 events. Calendar and clock with nonvolatile power. Continuous self-diagnostics of the device, nonvolatile storage of the fact of wearing-out of protection and alarm. Non-volatile alarm. 4
5 TECHNICAL SPECIFICATIONS OF РС83 Phase directional overcurrent protection Automatic recloser Pickup level, А Pickup level, А 0, Angle of maximum sensitivity, о The width of the zone, о The width of the zone, о The width of the zone, о Pickup delay, s Pickup delay, s Biased differential protection Negative sequence overcurrent protection Pickup level at the beginning of the zone of action, А 0,5 5 Pickup level, А 0,5 20 The braking rate 0,1 0,9 Pickup delay, s Equalization coefficient 0,25 4 Phase undervoltage protection Pickup delay, s 0 1 Pickup level, V Transformer differential protection Pickup delay, s 0,1 25 Pickup level, А 5 60 Phase overvoltage protection Pickup delay, s 0 1 Pickup level, V Auto recloser Pickup delay, s 0,1 25 Preparation time, s U0мах, U2мах Pickup delay of the 1 cycle, s 1 25 Pickup level, V Pickup delay of the 2 cycle, s 1 60 Pickup delay, s 0,1 25 Digital inputs Output relays Logical unit level 0,65Un Maximum continious current 8 А Breaking capacity (AC) 8A/250V Consumption, not more, ma 2,5 Breaking capacity (DC) FRONT PANEL AND CONTROLS 8A/24V; 1A/50V; 0,4A/250V ON and OFF buttons for controlling the switch. Four menu navigation buttons. Reset button for confirmation the alarm and return to the previous menu. Enter button to confirm the changes made. 18 two-color LEDs. 5
6 EXAMPLE OF EQUIPPING THE KV SUBSTATION WITH PC83 DEVICES Line 35 (110) kv 1-st. busbar 35 (110) kv VOLTAGE TRANSFORMER 35 (110) KV TAP CHANGER 1-st. busbar 10 kv VOLTAGE TRANSFORMER 10 KV Line 10 kv RESERVE LOGICAL BUSBAR PROTECTION LOGICALL BUSBAR PROTECTION CENTRAL ALARM Line 35 (110) kv TAP CHANGER RESERVE LOGICAL BUSBAR PROTECTION LOGICAL BUSBAR PROTECTION Line 10 kv 2-nd. busbar 35 (110) kv VOLTAGE TRANSFORMER 35 (110) KV 2-nd. busbar 10 kv VOLTAGE TRANSFORMER 10 KV 6
7 DIGITAL RELAY OF SERIES PC830 FEATURES PC830 Series differs from PC83 by its enhanced functionality and has increased quantity of discrete inputs to 22 and output relays - to 20, supports new communication interfaces (electric or optical Ethernet) and new interchange protocols (IEC-61850, MODBUS TCP), using the internal logics of devices provides user with more freedom to perform various tasks. THE SERIES CONSISTS OF: Distance Protection PC830-ДЗ. Differential Protection of three-winding transformer PC830-ДТ3. Differential Protection of two-winding transformer PC830-ДТ2. Voltage protection device with function Underfrequency - Overfrequency РС830-В2. EXAMPLE OF EQUIPPING THE 110 kv SUBSTATION WITH PC830 DEVICES Line 110 кв Voltage transformer supervision Distance and overcurrent line protection TV TV РС830-В2 РС830-Д3 Bus sectionalizer circuit breaker protection 110 кv РС830-Д3 To second busbar110 кv Т1 РС830-Д3 Transformer overcurrent and distance protection Transformer differential protection 10 kv 35 kv РС830-ДТ3 7
8 KEY FEATURES OF PC830 Transformer differential protection of three-winding transformer. Automatic CT ratio matching and vector group compensation. Instantaneous differential. Load encroachment. Phase distance protection. Ground distance protection. Phase directional overcurrent protection. Instantaneous/time overcurrent protection of zero sequence. Negative sequence overcurrent protection. Phase undervoltage protection. Phase overvoltage protection. Overvoltage protection 3Uo or start of ground protection from the measured 3Uo. Negative sequence overvoltage protection. Underfrequency - overfrequency control. Logical busbar protection. Acceleration of overcurrent protection. Power swing blocking. Blocking distance protection at voltage circuits faults. Breaker failure. Automatic recloser. Breaker close/trip circuit monitoring. 6 settings group. Fault location (km). Event log, alarm log, disturbance recorder. Synchrocheck. Negative sequence overvoltage protection. Functionality of each device of PC830 series is presented in the table on p DISTANCE PROTECTION FEATURES OF PC830-ДЗ DEVICE Each of the distance protection stages can have one of three kinds of characteristics on complex plane: MHO sector, MHO, a polygon. MHO sector characteristic MHO (ellipse) characteristic polygon characteristic jx jx Z reach settings Xy jx z reach settings Z reach settings 0.5φ zone φ zone φ reach φ reach φ reach R R -0.5R 1 R 1 R 8
9 TECHNICAL SPECIFICATIONS OF PC830 Phase distance protection Ground distance protection Pickup level Zrs, Ohm 0,1 100,0 Pickup level Zrs, Ohm 0,1 100,0 Pickup level R 1, Ohm 0,1 100,0 Pickup level R 1, Ohm 0,1 100,0 Pickup level Xy, Ohm 0,1 100,0 Pickup level Xy, Ohm 0,1 100,0 Angle of maximum sensitivity φ о Angle of maximum sensitivity φ о reach reach The width of the working zone φ o The width of the working zone φ о The compression ratio of the ellipse 0,1 1,0 The compression ratio of the ellipse 0,1 1,0 Pickup delay, s 0 60,0 Pickup delay, s 0 60,0 Phase directional overcurrent protection Instantaneous/time overcurrent protection of zero sequence Pickup level, А 0,3 120 Pickup level, А 0,3 120 Angle of maximum sensitivity, о Angle of maximum sensitivity, о The width of the zone, о The width of the zone, о Pickup delay, s 0 60 Pickup delay, s 0 60 Biased differential protection of three-winding transformer Negative sequence overcurrent protection Pickup level in the beginning of the zone, А 0,5 5 Pickup level, А 0,5 20 Breaking coefficient 0,1 0,9 Pickup delay, s 0 60 Equalization coefficients 0,25 4 Phase undervoltage protection Pickup delay, s 0 1 Pickup level, V Transformer differential protection Pickup delay, s 0 60 Pickup level, А 5 60 Phase overvoltage protection Pickup delay, s 0 1 Pickup level, V Automatic recloser Pickup delay, s 0 60 Preparation time, s U0мах, U2мах Pickup delay of 1 cycle, s 1 25 Pickup level, V 5 50 Pickup delay of 2 cycle, s 1 60 Pickup delay, s 0 60 Underfrequency (4 lines) Overfrequency Pickup level, Hz Pickup level, Hz Pickup delay, s 0 60 Pickup delay, s 1 60 Digital inputs Output relays Level of logical unit 0,65Uн Maximum continious current 8 А Breaking capacity (AC) 8A/250V Consumption, not higher, mа 2,5 8A/24V; Breaking capacity (DC) 1A/50V; 0,4A/250V 9
10 CONFIGURATION, PROGRAMMING OF INTERNAL LOGICS, SETPOINTS All operations on configuration of devices before commissioning can be carried out using the keyboard of Digital relay or using a special software CODIS. When working with the program all the settings and digital relay setpoints can be saved as a file for later modifying or uploading into the device. In emulation mode of CODIS software the digital relay setpoint file can be created and saved even in the absence of the device. "Measurement and control" mode CODIS allows you to display on your computer screen the current values of currents, voltages, their vector diagram. To view the oscillograms there is RZA Oscilog software. AN EXAMPLE OF ONE OF THE CODIS WINDOWS 10
11 OVERALL AND MOUNTING DIMENSIONS РС83 РС830 front view left side view front view left side view top view cutout in panel top view cutout in panel Body type Size А, mm Size В, mm Size С, mm Size D, mm M1 Module M2 Module mass, kg K none none 2 K DIRL AD, DIRL 3 11
12 RECOMMENDED USE OF DIGITAL RELAYS Use РС83-А2.0 РС83-А2М РС83-АВ2 РС83-ДТ2 РС83-В1 РС83-В4 РС83-С РС830-ДЗ РС830-ДТ3 РС830-ДТ2 РС830-В2 Radial line feeder 6(10) кv + + Ring line feeder 6 (10) kv + Bus sectionalizer 6(10) кv + + Main switch 6(10) кv + + Main switch 35 кv + Voltage transformer 6-35 кv + Voltage transformer кv + Radial line feeder 35 kv + Bus sectionalizer circuit breaker 35 kv + Ring line feeder 35 kv + + Back-up protection of transformer kv, control of HVbreaker Differential protection of two-winding transformer 35 kv + + Voltage control for tap changer kv + Central alarm + Bus sectionalizer circuit breaker 110 (150) kv + Radial or ring line feeder 110 (150) kv + Differential protection of three-winding transformer (150) kv Differential protection of two-winding transformer 110 kv + + Synchrocheck + Automatic load transfer + + Ukraine, 03680, Kyiv city, Ivan Lepse blvd, 4, building 1 tel.: +38 (044) fax: +38 (044) info@rzasystems.kiev.ua 12
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