1、BRITISH STANDARD BS EN 61334-3-21: 1997 IEC 1334-3-21: 1996 Distribution automation using distribution line carrier systems Part 3: Mains signalling requirements Section 21: MV phase-to-phase isolated capacitive coupling device The European Standard EN 61334-3-21:1996 has the status of a British Sta
2、ndard ICS 29.240.20BSEN 61334-3-21:1997 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 March 1997 BSI 01-1999 The following BSI references relate to the work on
3、 this standard: Committee reference PEL/57 Draft for comment 91/34173 DC ISBN 0 580 26916 7 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PEL/57, Power systems control and associated communications, upon which the follo
4、wing bodies were represented: BEAMA Metering Association (BMA) Building Automation and Mains Signalling Association (BASMA) Electricity Association Federation of the Electronics Industry GAMBICA Institution of Electrical Engineers Transmission and Distribution Association (BEAMA Ltd.) Amendments iss
5、ued since publication Amd. No. Date CommentsBS EN 61334-3-21:1997 BSI 01-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN61334-3-21 3 List of references Inside back coverBSEN61334-3-21:1997 ii BSI 01-1999 National foreword This British Standar
6、d has been prepared by Technical Committee PEL/57 and is the English language version of EN 61334-3-21:1996 Distribution automation using distribution line carrier systems Part 3: Mains signalling requirements Section 21: MV phase-to-phase isolated capacitive coupling device, published by the Europe
7、an Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC 1334-3-21:1996, published by the International Electrotechnical Commission (IEC). Cross-references Publication referred to Corresponding British Standard EN 60071-1:1995 BS EN 60071 Insulation co-ordination (IEC 71
8、-1:1993) BS EN 60071-1:1996 Definitions, principles and rules EN 60721-1:1995 BS EN 60721 Classification of environmental conditions (IEC 721-1:1990) BS EN 60721-1:1996 Environmental parameters and their severities BS 7527 Classification of environmental conditions Part 2 Environmental conditions ap
9、pearing in nature IEC 721-2-1:1982 Section 2.1:1991 Temperature and humidity IEC 721-2-2:1988 Section 2.2:1991 Precipitation and wind IEC 721-2-3:1987 Section 2.3:1991 Air pressure IEC 721-2-4:1987 Section 2.4:1991 Solar radiation and temperature IEC 721-2-5:1991 Section 2.5:1991 Dust, sand, salt mi
10、st IEC 721-2-6:1990 Section 2.6:1990 Earthquake vibration and shock IEC 721-2-7:1987 Section 2.7:1991 Fauna and flora BS EN 60721 Classification of environmental conditions BS EN 60721-3 Classification of groups of environmental parameters and their severities EN 60721-3-0:1993 (IEC 721-3-1:1987) BS
11、 EN 60721-3-0:1993 Introduction EN 60721-3-1:1993 (IEC721-3-1:1987) BS EN 60721-3-1:1993 Storage EN 60721-3-2:1993 (IEC721-3-2:1985) BS EN 60721-3-2:1993 Transportation EN 60721-3-3:1995 (IEC 721-3-3:1994) BS EN 60721-3-3:1995 Stationary use at weatherprotected locations EN 60721-3-4:1995 (IEC721-3-
12、4:1995) BS EN 60721-3-4:1995 Stationary use at non-weatherprotected locations EN 60721-3-5:1993 (IEC 721-3-5:1985) BS EN 60721-3-5:1993 Ground vehicle installations EN 60721-3-6:1993 (IEC 721-3-6:1987) BS EN 60721-3-6:1993 Ship environment EN 60721-3-7:1995 (IEC 721-3-7:1995) BS EN 60721-3-7:1996 Po
13、rtable and non-stationary use EN 60721-3-9:1993 (IEC 721-3-9:1993) BS EN 60721-3-9:1993 Microclimates inside productsBSEN 61334-3-21:1997 BSI 01-1999 iii A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their co
14、rrect application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, theENtitle page, pages 2 to 14, an inside back cover and a back cover. This standard has been
15、 updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on theinside front cover.iv blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61334-3-21 August 1996 ICS 33.020; 33.040.50 Descriptors: Electric power, distribution automatio
16、n, line carrier systems, mains signalling requirements, capacitive phase to phase coupling device English version Distribution automation using distribution line carrier systems Part 3: Mains signalling requirements Section 2.1: MV phase-to-phase isolated capacitive coupling device (IEC 1334-3-21:19
17、96) Automatisation de la distribution laide de systmes de communication courants porteurs Partie 3: Prescriptions concernant la transmission des signaux sur le secteur Section21: Dispositif de couplage phase-phase capacitif isol MT (CEI1334-3-21:1996) Verteilungsautomatisierung mit Hilfe von Trgersy
18、stemen auf Verteilungsleitungen Teil 3: Netzbedingte Anforderungen an die Signalbertragung Hauptabschnitt 21: Kapazitiv getrennte Auenleiter-Auenleiter-Ankopplungs- einrichtungen fr Mittelspannung (IEC 1334-3-21:1996) This European Standard was approved by CENELEC on 1996-07-02. CENELEC members are
19、bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to th
20、e Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the s
21、ame status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Commit
22、tee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1996 Copyright reserved to CENELEC members Ref. No. EN 61334-3-21:1996 EEN61334-3-21:1996 BSI 01-1999 2 F
23、oreword The text of document 57/248/FDIS, future edition1 of IEC1334-3-21, prepared by IECTC57, Power system control and associated communications, was submitted to the IEC-CENELEC parallel vote and was approved by CENELC as EN61334-3-21 on1996-07-02. The following dates were fixed: Annexes designat
24、ed “normative” are part of the body of the standard. In this standard, Annex ZA is normative. Annex ZA has been added by CENELEC. Contents Page Foreword 2 Introduction 3 1 Scope and object 3 2 Normative references 3 3 Definitions 3 3.1 MV phase-to-phase capacitive coupling method 3 3.2 Coupling devi
25、ce 3 3.3 Terms concerning coupling devices 4 4 Services conditions 4 4.1 Standard conditions 4 4.2 Ambient temperature 4 4.3 Power frequency 4 4.4 Operating voltages 4 5 General requirements 4 5.1 Safety and protection requirements 5 5.2 Insulation requirements 5 5.3 Carrier-frequency requirements 5
26、 5.4 Rating plate 5 5.5 Tests 5 Annex ZA (normative) Normative references to international publications with their corresponding European publications 13 Figure 1 MV phase-to-phase isolated coupling device 7 Figure 2 Main components of a MV phase-to-phase isolated coupling device 8 Figure 3 Power-fr
27、equency test 9 Figure 4 Common-mode impulse voltage test 9 Figure 5 Differential mode impulse voltage test 10 Figure 6 Measurement of composite loss 11 Figure 7 Measurement of return loss 11 Figure 8 Measurement of the nominal coupling-side impedence 12 Figure 9 Measurement of the nominal equipment-
28、side impedence 12 Figure 10 Measurement of the 3dB bandwidth 12 latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1997-04-01 latest date by which the national standards conflicting with the EN have to be withd
29、rawn (dow) 1997-04-01EN 61334-3-21:1996 BSI 01-1999 3 Introduction The already standardized capacitive coupling devices for power-line carrier systems (i.e.phase-to-earth and phase-to-phase) could be applied on DLC systems. In this case recommendations of IEC 481 are fully applicable. However, the a
30、bove-mentioned coupling devices are not fully suitable for an extensive application of DLC on MV networks for the following reasons: from a technical point of view, earthing the primary winding of the coupling transformer may cause unbalancing in the zero sequencing current, with negative effects on
31、 the directional overcurrent relay protections; from an economical point of view, the coupling device should have a price as low as possible. These considerations lead to the standardization of another coupling device such as the MV phase-to-phase isolated capacitive coupling device, where “isolated
32、” means: no connection of the primary section of the coupling device to the earth. Figure 1 shows a solution. Other solutions may become available. As other coupling devices are standardized, new sections to IEC1334-3 will be added. 1 Scope and object This section of IEC1334-3 applies only to MV pha
33、se-to-phase isolated capacitive coupling devices for MV (medium voltage) distribution line carrier (DLC) systems. The coupling device ensures: a) the efficient transmission/reception of carrier-frequency signals between the DLC-transceiver and the power line; b) the safety of personnel and the prote
34、ction of the low-voltage parts of the installation against the effects of the power-frequency voltage and transient overvoltages. The object of this section of IEC1334-3 is to establish definitions, requirements, methods of testing and rated values for phase-to-phase isolated capacitive coupling dev
35、ices to be used in MV-DLCsystems. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this section of IEC1334-3. At the time of publication, the editions indicated were valid. All normative documents are subject
36、to revision, and parties to agreements based on this section of IEC1334-3 are encouraged to investigate the possibility of applying the most recent edition of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standard. IEC 38:1983, IE
37、C standard voltages. IEC 71-1:1993, Insulation co-ordination Part1:Definitions, principles and rules. IEC 481:1974, Coupling devices for power line carrier systems. IEC 721, Classification of environmental conditions. 3 Definitions For the purposes of this section of IEC1334-3, the following definit
38、ions apply. 3.1 MV phase-to-phase capacitive coupling method the coupling device is connected between the conductor of one phase and the conductor of another phase of the power line and no connection is provided from the primary section of the coupling device to the earth 3.2 coupling device An arra
39、ngement of elements which contributes to ensure, together with the associated coupling capacitor, the transmission/reception, under prescribed conditions, of carrier-frequency signals between the conductors of the power line and the DLC transceivers. NOTEThese elements, alone or together, contribute
40、 to all or part of the functions described below: tuning, at the desired carrier-frequency value. This function may be performed by a tuning device; impedance matching between the power line and the DLC equipment. This function may be performed by a transformer or autotransformer; galvanic isolation
41、 between primary and secondary section terminals of the coupling device. This function may be performed by the above-mentioned transformer, if present; limitation of voltage surges coming from the power line at the terminals of the coupling device. This function may be performed by surge arresters s
42、uitably arranged in the coupling device. 3.2.1 earth terminal a terminal of the secondary section of the coupling device which is intended to be connected directly to the local station earthEN61334-3-21:1996 4 BSI 01-1999 3.2.2 primary terminals the terminals of the coupling device which are intende
43、d to be connected to the conductors of the power line 3.2.3 secondary terminals the terminals of the coupling device which are intended to be connected to the carrier-frequency connection 3.3 Terms concerning coupling devices 3.3.1 nominal coupling-side impedance (Z 1 ) the impedance which the coupl
44、ing device is designed to match on the power network side and to which the requirements refer 3.3.2 nominal equipment-side impedance (Z 2 ) the impedance which the coupling device is designed to match on the equipment side and to which the requirements refer 3.3.3 composite loss the composite loss b
45、rought about by the quadripole made up of the coupling device terminated by the nominal coupling-side and equipment-side impedance 3.3.4 return loss the return loss of the quadripole made up of the coupling device terminated by the nominal line-side and equipment-side impedance 3.3.5 available bandw
46、idth the frequency band within which the composite loss does not exceed the specified values 3.3.6 carrier-frequency working range the range of carrier frequencies within which the available bandwidth of a coupling device can be set 3.3.7 nominal peak-envelope power the peak-envelope power for which
47、 the coupling device has been designed compatible with the requirements of the signal distortion 4 Service conditions 4.1 Standard conditions In most cases, the standard conditions for phase-to-phase isolated MV capacitive coupling devices shall be those for indoor service. However, it is also possi
48、ble to meet conditions for outdoor service. In this case the coupling device shall be capable of their functions whether exposed to sunshine, rain, fog, hail, frost, snow, ice, etc. 4.2 Ambient temperature Unless otherwise agreed between manufacturer and purchaser, the ambient temperature shall be:
49、between 25 C and +55 C for outdoor service; between 10 C and + 55 C for indoor service. For special applications refer to IEC721. 4.3 Power frequency The power system shall have a rated frequency between zero (d.c.) and 60 Hz inclusive. 4.4 Operating voltages Taking into account the standard and exceptional values established in IEC 38, the rated operating voltages shall be between 6kV and 35kV. 5 General requirements The main components of a MV phase-to-phase isolated capacitive coupling device (see Figure
