This part of GB/T2900 specifies the special terms for power system protection and relay protection devices. GB/T 2900.49-2004 Electrical terminology Power system protection GB/T2900.49-2004 Standard download decompression password: www.bzxz.net

rC.s 29.120.5001.040.29
National Standard of the People's Republic of China
GB/T 2900.492004/IEC60050(448):1995 replaced by GR29M.48-1994
Electrical Terminology
Power System Protection
Electrical Technical Terminology--Power System Protection (IEC60050(448):1995, International Vocabulary Chapter 448.Power System Protection. IDT) Issued on 2004-05-10
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
2004-12-01Implementation
2 Terms and Definitions
2. 1 Terms and definitions 2.2 Protection delimitability. Electric power system products Longitudinal protection Automatic control device Chinese index English common citation Protection delimitability of boilers Protection delimitability Protection delimitation Power system fault Digital protection Free protection PTJP Remote tripping question Protection P
Accelerated under-range protection AUP,
Group energy over-preferential protection 0P
Release locking over-range protection TP
Charge over-range protection 1\31
Automatic vertical platform
GH/T2900.49—2004/IECQQ50(448):1995 times
GB/T290D.49—2004/1EC 6DD50(448):1995 Foreword
This part of G3/T 2933 is equivalent to IEC 1HC:30050(448), 1995 International Electrotechnical Commission: No. 448: Power system protection English version
The format and table rules of this part shall conform to the requirements of GB/T 1.1-2000 Standardization Work Guide Part 1, Standard Structure and Compliance Rules.
The adoption and submission of standards and numbers of this part shall conform to the requirements of GB/T 20000, 2-2000 Standardization Work Guide Part 2, Rules for the Use of International Standards
This part shall be effective from the month of implementation. T29G0.13—1991. This part was approved by the National Technical Committee for Standardization of Electrical Engineering. This part is approved by the National Technical Committee for Standardization of Electrical Engineering Terms and the National Technical Committee for Standardization of Electrical Equipment and Protection Equipment, and its related units include Xuzhou Relay Research Institute, Nanpei Relay Protection Electric Co., Ltd., Mechanical Science Research Institute, and Guodian Nanjing Automation Section An Co., Ltd.
The main drafters of this part: Ben Zhiyong, Xia Yangfu, Gao Yonglan The standards replaced by this part have reached the approval status, -GB/T2900.40—1S14.
1 Scope
GB/T2900.49—2004/1EC 6005D (448>; 1995 Electrical terminology Power system protection
This part of GI/DIN 293 specifies special terms for power system protection and relay protection devices. 2 Terms and definitions
2.1 New terms and definitions
448-11-01
Protection prulertiun
detects or generates other abnormal conditions in a power system, thereby causing a fault, terminating the abnormal condition or issuing a signal or indication. Note 1: Protection is a general term for the protection of a system or a related system. Note 2: Protection can describe the protection effect of the entire power system or the protection of individual components in the power system, for example, variable voltage protection, control protection, self-contained protection, etc.
Net 3: Protection. This includes the components of a power system, such as a unit that manages overvoltages in a power system. It includes units used to control the voltage or frequency of the power system, such as the detector, the switch, the load reduction, etc. 448-11-02
Protective relayipmilectiveretay (TIS4) is a measuring relay that constitutes a certain protection device alone or in combination with other relays. 448-11-03
Protective equipment relay syatem (T[SA) Protective equipment
A device that combines multiple protective relays and other components to provide a certain protection function. Note: "· A protective system is a special unit, which is divided into: a phase protection device, a phase protection device (a phase protection device, a phase protection system, and a specific component): 448-11-04
Protective system |tt||Complete the protection function, one or more protection devices and other components! ! A protection system includes a protection device, a mutual inductor, a switch, a return line and an auxiliary power supply, and sometimes a signal system. The system can include one or all protection zones, and may include automatic overlap between the conditions. 2, does not include full disconnection.
448-11-05
Protection zone
protected section.
An additional section of the power system network or network that can be protected by the specified protection. 448-11-06
Protection selectivity selectivityofpratectlonThe ability of the protection to detect fault zones and or fault phases of the power system. 448-11-07
Protection zone selectivitygectlonselectivityofprottclkonThe ability of the protection to detect fault zones of the power system, 448-11-08
Protection phase selectivityphareselectivitynfpmteciinnThe ability of the protection to detect fault phases of the power system. 1
CB/12900,49—2D04/IEC60050(449):1995448-11-C9
Unit protection unhprotectlor
Its action and zone selectivity depend on the power at each end of the protected zone. Protection.Note: In the United States, the "unit protection is not evaluated for the protection of the generator, 448-11-10
non-unit protection un-unitproelon
common zone disassembly depends on the measurement of the output of the spot relay at one end of the protection zone, and in some cases the logic avoidance signal between the ends is signed. This kind of protection
: the non-single class common zone impact can be determined by a setting, and the length of the protection will be determined for a certain time, 448-11-11
phasewegregatedprotectlon;segregatedphasepnvtection (LiSA) has selective protection, generally for unit account expansion 448-11-12
non-phase protectionnorr-pliasesegregatedprnteclicon Bhutan is the corresponding support The protection is unit protection: the unit protection is not divided into phases and uses a single dose to represent all two power phases. It is compared with the total mutual inductance or the shore network. 448-11-13
Main protection malnprotectlon;prlmaryprotectian (USA) In the power system, the protection is used to remove the stubborn fault or end the abnormal situation: it is used for the equipment with a certain number of faults or a history of multiple taxis. 448-11-14
Backup protection backupprotection
Due to the failure or inability of the main protection to operate or the failure of the associated breaker, the system fault is not eliminated within the predetermined time or the abnormal situation is not found. The protection of the predetermined action, note that in the wind, the new protection "piece" refers to the main protection system with a certain degree of hardware design: an expansion of the design. The backup protection can only be operated when the main protection system is complete or the selection is appropriate. 448-11-15
Circuit close backup protectioncircnitJncaihackupprotectlonkouexcited instrument transformer for protection, the backup protection assisted by the instrument transformer in the same primary circuit as the main protection, note: the "closed circuit breaker failure protection" is selected. 448-11-16
Substation close backup protectionsbytationlacalbackpproleaclioushan is a backup protection that is independent of the main protection in the same substation and does not share the same primary circuit with the instrument transformer. 449-1:-17
Remote backup protectionremotebackupproteclion is located away from the corresponding The backup protection in a substation where the main protection is located, 448-17-18
Circuit-breaker failure protection circuit-breaker tallure protectionlon; breaker rail protection (LSA) is a single protection that is scheduled to clear the system fault by starting its circuit breaker to trip when the corresponding circuit breaker fails. 448-13-19
Standard protection stallprolliou
Usually not in working state, but can be replaced by other protections, 2
448-17-20
Instantaneous protection fnstantaneouspruleelion protection without predetermined delay,
448-11-21
GB/T 2900.49—2004/IEC 60050(448):1995 Delayed protection delayed protection: lme-delayed protection (USA) Delayed protection.
448-11-22
Directional protection
Directional protection
Defined to be a protection that operates only for faults in one direction of the relay installation point. 448-11-23
reachefprutection
Protection range
The range covered by the protection, beyond which the non-unit protection circuit will not operate: 448-11-24
Overlapping protection area The common section protected by multiple protections of the same equipment in the station, 44B-11-25
Residual current (Por prolectlon) is equal to the sum of the currents in each phase.
448-11-26
Residual voltage risidululla【fnrprotectlom】is equal to the sum of the voltages in each phase to ground. 448-11-27
Positive sequence component posltdve（sequence）component（ofathrec-phapeBystem）One of the three symmetrical sequence components, it exists in symmetrical and asymmetrical three-phase systems+and the following complex expression is definedX(X+X)/3
where: is 123\Operation management flashed, and X,: and X are complex expressions of related phase quantities, of which 4X represents the system electrical sparseness or electrical phase duration.
44e-11-2日
Negative sequence component (seqence) is one of the three symmetrical phase sequences, and it only exists in an asymmetrical sinusoidal three-phase system. It is defined by the following complex expression X=(X+Xu+X)/3
Where: is the 12C\ operation factor, and is the numerical expression of the related phase quantity, where X represents the related value of the system current or voltage.
448-11-29
Zero sequence component zero (sequeae) component (of a three phase system) is one of the three symmetrical phase sequences, and it only exists in an asymmetrical sinusoidal three-phase system. It is also defined by the following complex expression =( +X +X/3
Where: 21, gain and input are complex expressions of the phases, and X represents the phase loss basis of the current to be converted into voltage. 448-11-30
inrush carrent
Transient current related to the excitation of transformers, power amplifiers, etc., 3
GB/T2900.49—2004/1EC60050<448).1995448-11-31
tripping
Breaking the circuit breaker by automatic or automatic control or by protective devices. 448-11-32
operationtripping
operation practice
is the automatic tripping of the circuit breaker after the power system trips due to abnormal conditions such as overvoltage, overload, and unstable system.
2.2 Reliability of protection
448-12-01
Correct action of protection correct peralicn of protection: correct operation of relay system (USA) Protection responds to power system release or power system common elimination in a predetermined manner. 448-12-02
Incorrect action of protection incorrect repetition of pmotecllon; 1ncorrect aperatian of relief of stem TISA) refusal to operate or malfunction see Figure 1.
413-12-0.3
Failed operation of protectionWhen there is no fault or other abnormality in the power system, or there is a fault or other abnormality that makes the protection fail to operate: the action of the protection.
448-12-04
Failure of protection cabinet noperatiamofpratectinnfailurelotrp（USA）Flash technical effectiveness or design defects, the protection should operate but does not operate, 445-12-05
Reliability of prulectiunrelinbinity of relative system(LisA)Reliability of protection
The rate at which the protection can complete the required function within a given time interval under given conditions, maintenance: the protection function is to act when it is needed, and not to act when it is not needed, must be country! , 445-12-06
Secnrity of prmlectionisecurity of relay aystem (LSAi protection safety
Under the agreed production conditions, the protection will not be activated within a given period of time. See Figure 1. 448-72-07
The protection depends on the system under the given production conditions. Within a given period of time, the protection will not refuse to fish. See Figure 1. 448-12-08
Redundancy
In a small device, multiple devices can be completed at the same time. 448-12-09 ||tt| |Hardware failure
Due to the incorrect operation of the protection components, the protection must be corrected. Note: Such failures can usually be found during the preliminary inspection. 445-12-10
Considering the rationality of the quick trap
Incorrect implementation of the protection due to the error in the protection plan, design, specification or application. Note 1: This type of defect cannot be reduced by the maintenance test user. Note 2: Software-activated failure in the effective digital method. 448-17-11
GR/T 2900.49—2004/IEC 60050 (443), 1995 Self-check function: A function usually performed inside the protection device to automatically detect internal and external failures of the protection device. 44E-12-17
Self-monitoring function (USA) A function that performs self-checking without affecting the protection function of the protection device. 448-12-13
Automatic test function (LSA) An automatic detection function that performs a test after disconnecting part or all of the normal working state of the protection, and the full range is to trip and close to affect the protection device. Protection
448-12-14
Non-power system fault tripping tripping: fiuls:rippinx (LsiA: due to insufficient power system discharge caused by the circuit breaker tripping - a test book design. For example, in the end of the power system fault protection expansion of the false operation, or the circuit breaker due to some secondary equipment or human error tripping, 2.3 Power system fault
448-13-01
Power system abnormal power systemnbnorulity beyond the normal operating conditions of the power system electrical working conditions, Such as output pressure, electro-hydraulic rate, frequency, switching, etc. 428-13-02
Power system fault pnwerstemfanl1
Failure of the main system or the equipment or components of the primary system plant, H abnormal situation that requires the corresponding step-down device to trip to return the fault to the power system, the power system can be improved, the room and the station can be set up, 446-13-03
Internal fault internal tanlt
Fault in the protection zone.
448-13-04
external fault
Fault in the power system outside the protection zone.
48-13-05
Short-circuit fault shunt faulthort-circuit fault (I.SA) Under the frequency of the power system, the current flows through the phase or multiple cabinets or flows through the agent and the ground at the same speed, 448-13-06
Towards the fault serles faulo
Through the fault of the phases of the two phases disconnected from one phase to form a small area.
448-13-07
More suitable for the combination fault
Question of the market to drive the standard fault improvement rate and the fault of the longitudinal fault 448-13-0 daybzxZ.net
High-term fault hihTesistanrefault
At the fault point with a re-discharge of the fault. GD/T 2900.49—200-/IEC 60050(448):199544B-13-09
Double circuit faultdoublercuitramlt
Two short-circuit faults occurring simultaneously in the same position on two parallel circuits are shown in Figure 3. 449-13-10
Intersystem faultIntersystemfault
Involves two power systems with different voltage levels. Society: In the relevant, "ineraysrm fnult state is defined as \rrw-riTryfmill\44B-13-11
Sequential faults comsequentinlrault
Fault caused directly or indirectly by another fault. 448-13-12
Evolving faulttleseloplngfanlt:evolringInult (tJSA) Insulation fault of the main phase increase! Or phase short circuit and develop into two-phase or one-phase fault. 448-13-13
Through fault currentthiroeghfanltcrnemlThe current in the protection zone caused by the fault of the power system outside the protection zone of the protection device, 448-13-14
fanltcurreni interrupiion time; inlerrnptiontime (USA) fault current disconnection time
the time from the beginning of the fault to the complete disconnection of the circuit breaker. Fault current tripping time: see 11448-13-15
fault clearance time; fault clearance time (sA) the time from the beginning of the fault to the elimination of the fault, this time is the time for the circuit breaker to discharge the internal part of the fault to make it rechargeable, see 448-13-16
fault-current tripping time (ITSA)
a fault involving two or more conductors, 2.4 protection
44B-14-01
distance protection distanceprotectilon: digtance relay (L.SA) is a non-unit protection relay, which is determined by the ratio of the measured value of the gas in the ground to the value of the protection zone.
448-14-02
non-unit protection zonezwasufmn-uuitprotectionzonesofprotecthon（1,RS power system non-unit protection (pass-band distance protection) convenient quantity element within the range. Note, these non-single protection details are usually purchased annually with a more R, Yong belt will be combined with the Anzhou quantity duty area for the slightly smaller 1 is only the price area daily limited time movement, the people in the long range of the area pass book has a delay, in order to get the selectivity, 448-14-03
Full distance commercial protection FulldislanLeprteclian for non-inflammation type phase-to-phase award and relative ground age magic and timely measurement of each protection zone, pass-band only · Each measuring element distance protection.
448-14-04
Switched distance protection switched mountain isinueepraelior for all power system release! All protection zones pass-band only have a trace element commercial protection.
448-14-05
GB/T 2900,49—2004/1EC 60050(448).1995 Underreach, undeechingprotectian (tSA) The state in which the minimum protection zone setting value of the distance protection is used. 448-14-06
erronens underreaching
The state in which the medium and high protection zone setting value is shortened due to measurement error. 448-14-07
overreachingmverreachovernecbingprulerliun (USA) The state in which the minimum protection zone setting value of the distance protection is used. 448-14-08
Crunous NWRRCaching
The protection range of distance protection is due to the measurement error that makes the equivalent pool grow beyond the setting of its protection zone. 448-14-09
Permissive protection pernissive protection after receiving the signal to allow the local protection to start the tripping of the protection, over-regulation protection, 448-14-10
Closed-loop protection blocklngproleetion after receiving the judgment signal to start the local protection of the user to start the tripping of a kind of protection, generally for distance protection, 448-1±-11
Fault impedance fanltimpedance
Improvement of the impedance between the fault point phase and the line and the pool or between each phase conductor, 448-1412
Transfer impedance trmmsferiunpedurice
A network end! :! All parallel paths between two points are expressed by the equivalent impedance between these two points, 448-14.13
TV impedance
sourceimpedance
For a specific fault point, the voltage applied to the output relay produces an equivalent return path of the fault current in the same path. 448-14-14
System impedance ratiosysemimpcdaneeralkotsourceimpedanceratlo (USA) At a specific measurement location. Passband At one end of the line: The ratio of the power system source impedance to the protected area impedance, 448-14-15
Negative impedancelaadimpedance
At a specific measurement location, the quotient of the phase current and the phase current in the power transmission under the condition that there is no fault in the system. 448-14-16
Line differential protection (USA) is a protection whose action and selectivity are determined by comparing the phase and amplitude of the current at each end of the protected circuit. 448-14-17
Line differential protection is a protection used for parallel circuits, and its action depends on the uneven distribution of the current between these circuits. 448-14-18
Phase comparison protection is a protection whose action and selectivity are determined by comparing the phase of the current at each end of the protected area. GH/T29C0.49—2004/IEC 60050(448):1995448-14-19
full phase comparison protectionful upper wavepharsecamparison pratectinadualcomparerphasecomparisonprotectclom1is4)
Phase comparison protection which compares once in each cycle, and compares once for the half cycle and the negative half cycle. 448-14-20
half-wave phase comparison protectionhalf-wavephasecomparisonprateeliunisingleeumparerphuseromparlsonrntectlon;LsA)
Phase comparison protection which compares once in the positive and negative half cycles of each cycle. 448-14-21
Frame groond protection (TISA)
It is a kind of protection for the current passing through the frame to the ground in the protection area. The transformer is required to reduce the current at the frame end. 448-14-22
High impedance differential protection highimprdunee mountain differententinlprolection uses a high impedance current transformer and a secondary circuit impedance to form a current differential protection. 448-14-23
Low impedance differential protection luwimpeduueedirfereatlalprotectinn month a single impedance current transformer lower than the impedance of the secondary circuit 22814-24
discrimination zone discrinuinnthgzone
the selection part of multi-section busbar protection, a monitor is used to monitor the current flowing out of a single busbar. 448-14-25
check zone checkane
the non-selection part of multi-zone busbar protection, a light monitor carries the current through each terminal of the whole station, the news of the start of the protection change depends on the action of the detection zone to judge the zone network. 448-14-26
Overcurrent protection is a type of protection that is designed to operate when the current exceeds a specified value: 448-14-27
Phase-to-phase fault protection is a type of protection that is designed to operate when the current exceeds a specified value: 448-14-2B
Ground fault protection is a type of protection that is designed to operate when the power system is subjected to an over-fault: 448-14-2B
Ground fault protection is a type of protection that is designed to operate when the power system is subjected to a ground fault: 448-14-29
Zero-phase differential protection restricted earth-fault protectionlon; round differential protectionlon (LSA) is a type of protection that comes from a group of "phase current filters with residual current balance" and is located at the neutral point of the common residual current balance device. Note that the center point of the protection device is based on the ground, and there is no need for a second or third electric emperor to set up a sensor, nor is there a need to limit the sensitive wind in the neutral point. This technology can also be used. 448-14-35
Neutral current protectionlon grounding current proleetion (USA) Transformer, electric puller neutral point grounding protection. 449-14-31
Overload protectionlon protection that is originally designed to act when the protected area is overloaded. 448-14-32
overvoltage protectionlon
Overvoltage protection
Protection that is designed to act when the power system voltage exceeds the standard, 448-14-33
Undervoltage protectionundereoltageprotecttec.linB/T2900.49--2004/IEC60050:448>：139% specifies the protection when the power system voltage is lower than the specified value, 448-74-34
neutral point overvoltage protection nentmldisplncwealpmoteclionDewtrlwer-vultugepeulcetian (USA) is the protection between the neutral point of the power system and the ground. 443-14-35
preemptive protection luss-uf-synchrunismprotrclianout-ot-atepprolertion (USA) is the protection that is scheduled to take action when the power system starts to lose step to prevent the loss of step. 448-14-36
Load-sheddingprotection A protection designed to reduce the system load under certain conditions (such as expected load shedding) 448-14-37
Undervoltage protection A protection that prevents the circuit breaker from operating when the power system loses power, with the system being prepared for recovery. 44814-38
Flavellingwavepmotertinn A protection that depends on the amplitude and/or magnitude of the electromagnetic wave caused by the friction and the magnitude of the fluttering wave. 44814-39
superdmposexl component protection is a protection method that depends on the comparison of multiple verifiable quantities, that is, the difference between the corresponding current, voltage and other electrical quantities before and after the fault. 2.5 Longitudinal protection 448-15-01 Longitudinal protection using telecommunication, direct comparison between the terminals of the electrical system. 44815-02 Non-unit longitudinal protection non-unit longitudinal protection using telecommunication, direct comparison between the terminals of the electrical system. pruka:tiun signal transmission makes the internal fault trip or remote sequencer trip, and the external fault closes and trips. A non-unit protection as shown in the figure.
448-15-C3
unit longitudinal protection mltprotectlonugingtelecomunicalian power system electrical quantity communication core communication transmits the unit protection expansion in analog or digital form from one end of the protection zone to the other end for comparison: 448-15-04
guided protection pitniwineprntectinn protection using full-quality line thank signal.
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