{"id":254980,"date":"2024-10-19T16:51:08","date_gmt":"2024-10-19T16:51:08","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iec-ieee-60255-118-12018\/"},"modified":"2024-10-25T12:17:22","modified_gmt":"2024-10-25T12:17:22","slug":"bs-iec-ieee-60255-118-12018","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iec-ieee-60255-118-12018\/","title":{"rendered":"BS IEC\/IEEE 60255-118-1:2018"},"content":{"rendered":"

This part of IEC 60255 is for synchronized phasor measurement systems in power systems. It defines a synchronized phasor (synchrophasor), frequency, and rate of change of frequency measurements. It describes time tag and synchronization requirements for measurement of all three of these quantities. It specifies methods for evaluating these measurements and requirements for compliance with the standard under both static and dynamic conditions. It defines a phasor measurement unit (PMU), which can be a stand-alone physical unit or a functional unit within another physical unit. This document does not specify hardware, software or a method for computing phasors, frequency, or rate of change of frequency.<\/p>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
4<\/td>\nCONTENTS <\/td>\n<\/tr>\n
8<\/td>\nFOREWORD <\/td>\n<\/tr>\n
10<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
12<\/td>\n1 Scope
2 Normative references
3 Terms, definitions, and abbreviated terms
3.1 Terms and definitions <\/td>\n<\/tr>\n
13<\/td>\n3.2 Abbreviated terms <\/td>\n<\/tr>\n
14<\/td>\n4 Synchrophasor measurement
4.1 Input and output quantities
4.2 Power system signal
Figures
Figure 1 \u2013 Input and output quantities <\/td>\n<\/tr>\n
15<\/td>\n4.3 Measurand definitions
4.3.1 Synchrophasor phase angle
4.3.2 Synchrophasor measurand
4.4 Frequency measurand definition <\/td>\n<\/tr>\n
16<\/td>\n4.5 Rate of change of frequency measurand definition
4.6 Measurement time synchronization
5 Measurement compliance evaluation
5.1 PMU measurement capability
5.2 Measurement evaluation
5.2.1 Synchrophasor measurement evaluation <\/td>\n<\/tr>\n
17<\/td>\n5.2.2 Frequency and ROCOF measurement evaluation
5.2.3 Measurement response time and delay time <\/td>\n<\/tr>\n
18<\/td>\n5.2.4 Overshoot and undershoot <\/td>\n<\/tr>\n
19<\/td>\nFigure 2 \u2013 Step transition examples <\/td>\n<\/tr>\n
20<\/td>\n5.2.5 Measurement reporting latency
5.2.6 Measurement and operational errors <\/td>\n<\/tr>\n
21<\/td>\n5.3 Measurement reporting
5.3.1 General
5.3.2 Reporting rates
5.3.3 Reporting times
5.4 Measurement compliance
5.4.1 Performance classes
Tables
Table 1 \u2013 Standard PMU reporting rates <\/td>\n<\/tr>\n
22<\/td>\n5.4.2 Compliance verification
6 Measurement compliance test and evaluation
6.1 Testing considerations <\/td>\n<\/tr>\n
23<\/td>\n6.2 Reference and test conditions
6.3 Steady-state compliance <\/td>\n<\/tr>\n
24<\/td>\nTable 2 \u2013 Steady-state synchrophasor measurement requirements <\/td>\n<\/tr>\n
26<\/td>\n6.4 Dynamic compliance \u2013 Measurement bandwidth
Table 3 \u2013 Steady-state frequency and ROCOF measurement requirements <\/td>\n<\/tr>\n
28<\/td>\nTable 4 \u2013 Synchrophasor measurement bandwidth requirements using modulated test signals
Table 5 \u2013 Frequency and ROCOF performance requirements under modulation tests <\/td>\n<\/tr>\n
29<\/td>\n6.5 Dynamic compliance \u2013 Performance during ramp of system frequency <\/td>\n<\/tr>\n
31<\/td>\n6.6 Dynamic compliance \u2013 Performance under step changes in phase and magnitude
Table 6 \u2013 Synchrophasor performance requirements under frequency ramp tests
Table 7 \u2013 Frequency and ROCOF performance requirements under frequency ramp tests <\/td>\n<\/tr>\n
32<\/td>\n6.7 PMU reporting latency compliance
Table 8 \u2013 Phasor performance requirements for input step change
Table 9 \u2013 Frequency and ROCOF performance requirements for input step change
Table 10 \u2013 PMU reporting latency <\/td>\n<\/tr>\n
33<\/td>\n7 Documentation <\/td>\n<\/tr>\n
34<\/td>\nAnnex A (informative)Time tagging and dynamic response
A.1 Dynamic response
A.2 Time tags <\/td>\n<\/tr>\n
35<\/td>\nFigure A.1 \u2013 Frequency step test phase response without groupdelay compensation
Figure A.2 \u2013 Frequency step test phase response after group delay compensation <\/td>\n<\/tr>\n
36<\/td>\nA.3 Magnitude step test example
Figure A.3 \u2013 Magnitude step test results for 3 different algorithms <\/td>\n<\/tr>\n
37<\/td>\nA.4 PMU time input
Figure A.4 \u2013 Magnitude step test example <\/td>\n<\/tr>\n
39<\/td>\nAnnex B (informative)Parameter representation and definition application examples
B.1 General
B.2 Representing non-stationary sinusoids <\/td>\n<\/tr>\n
40<\/td>\nB.3 Introduction of definition application examples
B.3.1 General
B.3.2 Example 1: steady-state at nominal frequency
B.3.3 Example 2: steady-state and constant off-nominal frequency <\/td>\n<\/tr>\n
41<\/td>\nB.3.4 Example 3: oscillation of the phase and amplitude of the power signal
Figure B.1 \u2013 Sampling a power frequency sinusoid at off-nominal frequency <\/td>\n<\/tr>\n
42<\/td>\nB.3.5 Example 4: constant, non-zero rate of change of frequency <\/td>\n<\/tr>\n
43<\/td>\nB.4 Reconstruction of the power system sinusoidal signal from the synchrophasor <\/td>\n<\/tr>\n
44<\/td>\nAnnex C (informative)PMU evaluation and testing
C.1 General
C.2 TVE measurement evaluation <\/td>\n<\/tr>\n
45<\/td>\nC.3 Phase-magnitude relation in TVE and timing
Figure C.1 \u2013 Total vector error (TVE)
Figure C.2 \u2013 The 1 % TVE criterion shown on the end of a phasor <\/td>\n<\/tr>\n
46<\/td>\nFigure C.3 \u2013 TVE as a function of magnitude for various phase errors <\/td>\n<\/tr>\n
47<\/td>\nC.4 Evaluation of response to stepped input signals
Figure C.4 \u2013 TVE as a function of phase for various magnitude errors <\/td>\n<\/tr>\n
48<\/td>\nFigure C.5 \u2013 Example of step change measurements using a magnitude step at t = 0 <\/td>\n<\/tr>\n
49<\/td>\nC.5 Harmonic distortion test signal phasing
C.6 ROCOF limits
C.6.1 General
Table C.1 \u2013 Harmonic phase sequence in a balanced three-phase system <\/td>\n<\/tr>\n
50<\/td>\nC.6.2 Derivation <\/td>\n<\/tr>\n
51<\/td>\nC.7 PMU reporting latency
Figure C.6 \u2013 PMU reporting latency example (actual PMU measurement) <\/td>\n<\/tr>\n
52<\/td>\nAnnex D (informative)Reference signal processing models
D.1 General
D.2 Basic synchrophasor estimation model <\/td>\n<\/tr>\n
53<\/td>\nD.3 Timestamp compensation for low-pass filter group delay
Figure D.1 \u2013 Single phase section of the PMU phasor signal processing model <\/td>\n<\/tr>\n
54<\/td>\nD.4 Positive sequence, frequency, and ROCOF
Figure D.2 \u2013 Complete PMU signal processing model <\/td>\n<\/tr>\n
55<\/td>\nD.5 P Class reference model for phasor
D.6 P class filter details <\/td>\n<\/tr>\n
56<\/td>\nFigure D.3 \u2013 P class filter coefficient example (N = 2 \u00d7 (16 \u2013 1) = 30)
Figure D.4 \u2013 P class filter response as a function of frequency <\/td>\n<\/tr>\n
57<\/td>\nD.7 M class reference model for phasor <\/td>\n<\/tr>\n
58<\/td>\nFigure D.5 \u2013 Reference algorithm filter frequencyresponse mask specification for M Class <\/td>\n<\/tr>\n
59<\/td>\nD.8 Data rate reduction model
Figure D.6 \u2013 M class filter coefficient example
Table D.1 \u2013 M class low pass filter parameters <\/td>\n<\/tr>\n
60<\/td>\nD.9 Trade-offs in the reference model
D.9.1 Immunity to off-nominal components, reporting latency and time alignment
Figure D.7 \u2013 Data rate reduction signal processing model
Figure D.8 \u2013 Factors affecting estimation <\/td>\n<\/tr>\n
61<\/td>\nD.9.2 Response time and the accuracy of synchrophasors, frequency and ROCOF measurements
Figure D.9 \u2013 Reference filter magnitude frequency response with Fs = 60 fps <\/td>\n<\/tr>\n
63<\/td>\nAnnex E (informative)Synchrophasor measurement using sampled value input to PMU
E.1 General
E.2 Creation of sampled values
Figure E.1 \u2013 Synchrophasors having sampled values as inputs <\/td>\n<\/tr>\n
64<\/td>\nE.3 Sources of synchrophasor error when using sampled values
E.4 Performance
E.4.1 General
E.4.2 Steady-state performance considerations <\/td>\n<\/tr>\n
65<\/td>\nE.4.3 Dynamic performance considerations
E.4.4 Latency <\/td>\n<\/tr>\n
66<\/td>\nE.5 Proposed changes to performance requirements
Table E.1 \u2013 Summary of proposed performance requirement changes <\/td>\n<\/tr>\n
68<\/td>\nAnnex G (normative)Extended accuracy specification for PMUs in steady-state
G.1 General
G.2 Applicable conditions
G.3 Accuracy specification
Table G.1 \u2013 Conditions for extended accuracy tests <\/td>\n<\/tr>\n
69<\/td>\nG.4 Usage examples
G.5 Preferred accuracy ranges
G.6 Testing issues
G.6.1 Testing for improved accuracy <\/td>\n<\/tr>\n
70<\/td>\nG.6.2 Testing at currents exceeding continuous thermal rating
G.6.3 Environmental considerations <\/td>\n<\/tr>\n
71<\/td>\nAnnex H (informative)Generator voltage and power angle measurement
H.1 General
H.2 Measurement methods
H.3 Input signal
H.4 Measuring process <\/td>\n<\/tr>\n
72<\/td>\nFigure H.1 \u2013 Phasor diagram under no-load conditions
Figure H.2 \u2013 Phasor diagram with load on generator <\/td>\n<\/tr>\n
73<\/td>\nAnnex I (normative)Extended PMU bandwidth classes
I.1 General
I.2 Bandwidth determination
I.3 Enhanced bandwidth classes
Table I.1 \u2013 Conditions for extended bandwidth testing <\/td>\n<\/tr>\n
74<\/td>\nI.4 Testing issues <\/td>\n<\/tr>\n
75<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Measuring relays and protection equipment – Synchrophasor for power systems. Measurements<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2019<\/td>\n78<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":254984,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[512,2641],"product_tag":[],"class_list":{"0":"post-254980","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-29-120-70","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/254980","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/254984"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=254980"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=254980"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=254980"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}