The hv works in combination with the master unit, and provides the same. Secondary injection tests for checking the correct operation of the. Method statement for electrical testing and commissioning for lv switchgear. Authors paul price, nate myers, jim dehaan bureau of reclamation hydropower technical services group denver, colorado 5d. Assuming the relay which is responsible is known further information is needed to be evaluated 1. Gigavac is a leading designer, manufacturer, and worldwide seller of contactors, manual battery disconnect switches, and high voltage relays using vacuum, gas filled, and high voltage reed relay technology. Statutory inspection and test for high voltage installations. These settings may be revaluated during the commissioning, according to actual and measured values. The electronic trip unit is a microprocessor controlled, multifunction overcurrent protective device for application with low voltage power circuit breakers. Type h3 and hv3 three phase directional relays instruction leaflet. A relay is automatic device which senses an abnormal condition of electrical circuit and closes its contacts. Field test procedure for protective relays, november 1991. Protection relay testing and commissioning cedengineering.
Evaluation of a centralized substation protection and control. H3 and hv 3 three phase directional relays the types h3 and hv 3 relays are polyphase direction relays which are used to obtain high speed directional discrimination during faults on power systems. Inspection, testing and commissioning of electrical. The primary goal of the project substation was not to test the cpc concept but actually to find the. Thus, the true purpose of preventative maintenance may be lost. Dynamic testing of distance protection tu delft repositories. Switchgear testing and commissioning procedure electrical. The relay shall the purpose of the high voltage impulse withstand type not maloperate, and shall still perform its main functions test is to ensure that circuits and. For these tests, the relay outputs are normally disconnected from the remainder of the protection scheme, as it is a test carried out to prove correct relay, rather than scheme, operation. This shall include facilities required for cb operation, interlocks and trip circuit supervision as the main functions. Commissioning engineers often work under difficult time constraints.
Protective relay and protection system commissioning. You can now purchase the relay testing handbook pdf copies of any book in the relay testing handbook series at our online store. Protection systems play a key role for the safe and reliable operation of todays electricity power systems. As the primary protection of high voltage hv and extra high voltage ehv transmission networks, distance. From standard solutions to custom designs, we offer reliable, costeffective products for mechanical, electrical, digital, analog, miniature, and harsh environment requirements. The station has two high voltage lines leading to two trans formers with. Purpose and scope the purpose of this standard work practice swp is to standardise and prescribe the method for testing. Ensure that all the precommissioning checks are carried out successfully. High voltage test is done by applying 80% of factorytested voltage.
It is common practice to provide test blocks or test sockets in the relay. The tests themselves will reveal catastrophic failures which would have prevented the relay from performing when called upon to operate, while properly maintained records will reveal. An organized timecurrent study of protective devices from the utility to a device. Siemens is one of the worlds leading suppliers of protection equipment for power systems. This is the most comprehensive guide about motor relay testing and dynamic relay testing. This course is designed to give you a thorough theoretical and practical understanding of both high voltage and low voltage electrical protective. Applications range from classic panel built control systems to modern interfaces between control microprocessors and their power circuits or any application where reliable galvanic separation is required between different circuits. Periodic relay testing is, first and foremost, preventive maintenance. Choosing the suitable relay testing set depends much on the application or type of protection relay to be tested overcurrent, distance, differential, voltage, single or 3phase relay testing, etc, the generation of the relay electromechanical, analogue, digital, more and more frequent with iec 61850 performance, the test scenario e. While doing the hv test the steps to be followed are as below.
Protective relay testing substation commissioning wells. The type hv 3 relay has a voltage restraint element which introduces a restraining torque on the relay proportional to the area of the voltage. No matter your power system size or age, proper equipment maintenance is essential to maximize power system reliability. Section 7 of the ansineta standard for acceptance testing specifications for electrical power equipment and systems may be reproduced and used on a cut and paste basis for the particular type of equipment to be tested. Sp0518 protection relay testing for commissioning swp pdf file. Internal schematic of the type hv3 relay in the ft32. Since we do not know the fault voltages, we need to take the latter approach, so we can calculate relay voltage from 0, 0, 0, 11, 1, 1, 2, 2, 0000 0 000 relay sys relay, relay sys sys relay relay sys 2, relay vz i vv.
Standard for acceptance testing specifications for electrical. Protective relay and protection system commissioning omicron. The test results of two distance relays show that depending on the dynamic. Selection of the protection system for machines and plants. A comparison of the time it takes protective devices to operate when certain levels of normal or abnormal current pass through them. The reason for the discrepancy will not be a change in the relay characteristic but a change in the test conditions, for example, the relay s proximity to a steel cabinet. Please enter your details in the form below and we will send a link to the datasheet to your email address.
Mar 14, 2017 the field testing and calibration of solidstate trip units can be performed by either primary current injection method or secondary current injection method. Hv relay and contactor information with cross reference charts for kilovac te connectivity, jennings, kissling, and cyneryg3 part numbers. Operation, maintenance, and field test procedures for. These products not only include the siprotec brand of numerical protection relays, but also the reyrolle brand of relays and test blocks. Testing and commissioning requirements for switchgear. This seminar will introduce the theory and practice of endtoend relay testing from the relay testers. The relay testing handbooks are a series of books that have been written from the relay testers perspective to concentrate on the principles and practical questions that every relay tester should be familiar with. The raptor is an innovative and advanced substation test system that replaces the need for multiple test sets, now enhanced with the high voltage testing capability. This may be done across terminals 2 and 4 at the rear of the mcri overcurrent relay.
Medium voltage products technical guide protection criteria. The availability of equipment is essential for adhering to these time schedules. Timesaving test automation for standard test procedures is also a must for meeting the deadlines of a time sensitive environment. If many relays are required in a device the excitation current is an important parameter. High voltage services relay protection testing at the completion of any new or refurbished high voltage installation it is critical that the installation be tested to determine if it can deliver what it is designed to do. The former are high voltage, low current outputs for use with. We offer a wide array of products with applications across many industries. The relay is a well known and widely used component. These contacts in turns close and complete the circuit breaker trip coil circuit hence make the circuit breaker tripped for disconnecting the faulty portion of the electrical circuit from rest of the healthy circuit.
Manual open commands found in trip circuits are usually not included. Protection relay testing for commissioning swp check this is the latest process zone version before use. It includes everything ive learned about relay testing since the relay testing handbook. Relay settings calculations electrical engineering. After installation of the switchboards, all the bus bar bolts are torque tested as per manufacturers recommendations with a torque wrench. In new zealand, protection and control ied products from siemens are distributed by hv power. The following sections of the ansineta standard for acceptance testing specifications for. For doing r phase the other phases are shorted and earthed. The high frequency disturbance test models high voltage transients that result from. Principles and practice, including stepbystep dynamic testing procedures that can be applied to any relay element with fixedtime delays. Relays are frequently found device in high voltage or medium voltage power system network. Names of parameters in this calculation may differ from those in. Also, highvoltage relays with single pole double throw contact rl 21 or for higher voltages rl 42h and rl 38h are available. Breakertobreaker resistance is measured by connecting a microohm meter between adjacent panels by applying 100a dc for 10 seconds for each phase.
Jul 27, 2010 due to the long life spans of protection relays, engineers are often required to test relays of all generations, from older electromechanical designs to the latest ieds. Types of electrical protection relays or protective relays. Gigavac contactors, high voltage relays, switches, power. Which of the procedures described below are added to your test plan will depend on the specific project or industry specifications, to be determined by the equipment owner or system engineer. The tests themselves will reveal catastrophic failures which would have prevented the relay from performing when called upon to operate, while properly maintained records will reveal any trends which could lead to such failures. This document details powersystems requirements for electrical testing of hv equipment up to and including 33kv. Relay settings at all new protective relay installations, the re lays should be adjusted in accordance with the settings given in the relay data sheets furnished by the denver office, after which, tests should be made to determine if the actual operating characteristics check with the adjustments. Relays with internal breaker failure elements usually have a bfi logic setting that includes. Unless the test circuits are simple and obvious, the relay commissioning manual. The raptor hv, a high voltage testing slave, complements the raptor system, extending the raptor applications for testing transformers, among others. Although it is a minimum power relay, it can conduct and cut off electric circuit with dc high voltage and heavy current. Pdf relay testing and commissioning renzo ninaja coaguila. Relay protection testing rans electrical high voltage. Megger is the industry leader in relay testing, having developed the first softwaredriven protective relay test system in 1984, and continuing to provide models from computercontrolled to manually operated test sets in portable and laboratory styles for every relay testing need.
While doing the hv test the steps to be followed are. Protection selectivity is partly considered in this report, and could be also revaluated. Page 1 of 15 standard work practice sp0518 ver 2 ergon energy corporation limited abn 50 087 646 062 ergon energy queensland pty ltd abn 11 121 177 802 1. Thus, procedures and records should be designed with preventive maintenance as the guide. This test procedure however is usually too compli cated for routine field. This technical report refers to the electrical protections of all 2kv switchgear. Therefore you will find in our range a highvoltage relay for much lower excitation current. The relay testing handbook pdf digital version is now. Protective relay testing may be divided into three categories. Even if the scheme has been thoroughly tested in the factory, wiring to the cts and. Fist 38, operation, maintenance, and field test procedures for protective relays and associated circuits 5a. Page 3 of 15 standard work practice sp0518 ver 2 ergon energy corporation limited abn 50 087 646 062 ergon energy queensland pty ltd abn 11 121 177 802 return the relay scheme to service in an acceptable standard.
Protection relay guides electrical engineering portal. The primary hv side of the equipment is disconnected, so that no. It is typical the use of high voltage testing on transformers to confirm performance. When testing the mbci differential relay, it is necessary to short the contact of the mcri relay. To shorten testing and commissioning times of siprotec relays, extensive test and diagnostic functions are available to the user in digsi 5.