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2.3.5.6 If under the operating conditions described in 2.3.5.5 the Flicker due to a Fluctuating Load exceeds the limits then Flicker compensation, which will reduce the Flicker to an acceptable level shall be installed. For the avoidance of doubt the acceptance Criteria for Flicker is the 95% values of Short and Long Term Flicker Severity i.e., P st and P lt will be below the limits specified in table 2.3.5.2. Here the 95% values mean the values of Flicker Severity measured and observed during 95% of the total observation period. The System overall performance yardstick for the level of Flicker reduction to be achieved shall be based upon enabling connection of other similar Fluctuating Load and/or permitting for future extension and development of the location with further Fluctuating Load installations. The Flicker compensation method and equipment to be used shall be of a type that does not cause resonance problems with the existing and intended future developments of the distribution system. 2.3.5.7 If the permissible Flicker limits cannot be met even with installation of Flicker compensation at a particular Points of Common Coupling at a particular System voltage level then connection of the Fluctuating Load at a higher voltage level or elsewhere in the System shall be considered. The connection point of choice will need to have to experience lower voltage fluctuations than the first connection point considered under the operational conditions in 2.3.5.5. 2.3.6 Harmonics 2.3.6.1 All plant and equipment connected to the Distribution System, and that part of the TNB distribution system at each connection site, should be capable of withstanding the following distortions of the voltage waveform in respect of harmonic content. The maximum total levels of Harmonic Distortion at any connection point on the distribution system from all sources under both planned outage and Secured Contingency Event conditions, unless abnormal conditions prevail, shall not exceed: (a) at 33kV and 22kV, a Total Harmonic Distortion of 3% with no individual harmonic voltage greater than that shown in the tables X; (b) at 11kV and 6.6kV, a Total Harmonic Distortion of 4% with no individual harmonic voltage greater than that shown in the tables Y; (c) at 415V and below, a Total Harmonic Distortion of 5% with no individual harmonic voltage greater than that shown in the tables Z; (d) infrequent short duration peaks may be permitted by TNB to exceed the above levels for harmonic distortion; TENAGA NASIONAL B E R H A D 35
2.3.6. .2 A Consumer who intends to connect non-linear loads to the TNB system shall carry out assessment harmonic distortion levels for the connection of each non-linear Load to the Distribution System. TNB will verify the results of the assessments. 2.3.6. Consumers shall ensure that the Immunity Level of their plant and Apparatus is compatible with the electromagnetic disturbances present on the System including harmonics. 2.3.6. .4 In assessing the level of harmonic distortion and individual harmonic levels at the planning stage, the assessment will be carried out at a realistic system operating condition giving the minimum number of connections with which that point on the system can be operated within normal voltage limits and following secured contingency events. This condition shall be considered as representative of the type of system conditions under which the harmonic distortion and individual harmonic levels will be at their highest level. 2.3.6.5.5 If under the operating conditions describes in ..6. 2.3.6.1 (a) (a) the harmonic distortion and individual harmonic levels due to the load exceed the limits then harmonic filters which will reduce the harmonics to an acceptable level shall be installed to bring the levels within limits. The system overall performance yardstick for the level of harmonic reduction to be achieved shall be based upon enabling connection of other similar harmonic producing load and/or permitting for future extension and development of the location with further harmonic producing load installations. 2.3.6.6.6 The planning limits of harmonics that are acceptable of the distribution system are in accordance with MS IEC 61000-3-6 “ Assessment of emission limits for distorting loads in MV & HV power systems”, and where appropriate Engineering Recommendations G5/4 is adopted. 2.3.6.7.7 TNB uses the procedures contained in this document to plan the connection of loads producing harmonics and applies the limits therein in measuring and monitoring the levels of harmonics at such points of connection. These are given in summary in the tables below. 36 TENAGA NASIONAL B E R H A D
Page 2 and 3: Vision To be among the leading c
Page 4 and 5: CONTENTS SUPPLY APPLICATION 1.0 Ten
Page 6 and 7: 1.0 TENAGA NASIONAL BERHAD ELECTRIC
Page 8 and 9: e) Elektrik Bestari TNB provides el
Page 10 and 11: 1.10 Types Of Supply Application Al
Page 12 and 13: 1.18 Tariff Please refer to the Tar
Page 14 and 15: 2.4 TNB Supply Lead Time The flowch
Page 16 and 17: Stage Description 2 TNB Register Ap
Page 18 and 19: Steps Action Reference 2 After appr
Page 20 and 21: Steps 7 8 Action Advise applicant t
Page 22 and 23: CONTENTS Page 1.0 PLANNING FOR C
Page 24 and 25: 1.1.1.1 Technical Requirements For
Page 26 and 27: Should a preliminary examination of
Page 28 and 29: • Capacitance connected in parall
Page 30 and 31: SECTION 2.0 PLANNING AND DESIGN CRI
Page 32 and 33: For the purpose of this guideline,
Page 34 and 35: Table 2.3.4.1: Voltage limits on sw
Page 38 and 39: Table X: Planning Levels for Harmon
Page 40 and 41: 3) At the terminals of a Customer
Page 42 and 43: 2.5.3 Protection System Evaluation
Page 44 and 45: 3.2 Group Diversity Group diversity
Page 46 and 47: - 132/33kV, 2 x 90 MVA - 132/22kV,
Page 48 and 49: The establishment of transmission m
Page 50 and 51: CONTENTS Page ABBREVIATIONS .......
Page 52 and 53: 1.0 GENERAL REQUIREMENTS 1.1 All th
Page 54 and 55: ii. iii. iv. The tickness of board
Page 56 and 57: 4.0 GROUP METERING FOR WHOLE CURREN
Page 58 and 59: v. The panel cover and metal plate
Page 60 and 61: 6.2 Specifications For Metering PTs
Page 62 and 63: 6.7.2 Outdoor Breakers A ‘marshal
Page 64 and 65: GLOSSARY AND DEFINITIONS In this gu
Page 66 and 67: Embedded Generating Unit A generati
Page 68 and 69: Protection Protection Apparatus Pro
Page 70 and 71: Appendix Topic Page 1 List of Kedai
Page 72 and 73: Appendix 1 List of Kedai Tenaga in
Page 74 and 75: Appendix 1 List of Kedai Tenaga in
Page 76 and 77: Appendix 3 PERMOHONAN BEKALAN ELEKT
Page 78 and 79: Appendix 5 TENAGA NASIONAL B E R H
Page 80 and 81: Appendix 7 PART B : TNB SUPPLY APPL
Page 82 and 83: Appendix 9 JOINT MEETING ACTION LOG
Page 84 and 85: Appendix 11 SAMPLE OF APPOINTMENT L
Page 86 and 87:
Appendix 12 Load Category Total lig
Page 88 and 89:
Appendix 13 LOCATION PLAN TENAGA NA
Page 90 and 91:
Aku Janji dan Tanggungrugi *Pemilik
Page 92 and 93:
Appendix 16 Demand forecast and sub
Page 94 and 95:
Appendix 17 SUBSTATION LAYOUT DRAWI
Page 96 and 97:
Appendix 18 SITE PLAN / LOCATION PL
Page 98 and 99:
Appendix 18 LOGO DETAIL FOR DOUBLE
Page 100 and 101:
Appendix 19 (Drawing 7B) MV/HV, 1 O
Page 102 and 103:
Appendix 19 (Drawing 7D) 3 FEEDER M
Page 104 and 105:
Appendix 19 (Drawing 7F) MV/HV, 3 F
Page 106 and 107:
Appendix 19 (Drawing 7H) 1, 2, 3 OR
Page 108 and 109:
Appendix 19 (Drawing 7J) 1, 2, 3 OR
Page 110 and 111:
Appendix 20 TENAGA NASIONAL B E R H
Page 112 and 113:
Appendix 22 DRAWING NO 2A : SINGLE
Page 114 and 115:
Appendix 23 DRAWING NO 3A : OUTDOOR
Page 116 and 117:
Appendix 25 DRAWING NO 4A : 3 PHASE
Page 118 and 119:
Appendix 25 DRAWING NO 4C : 3 PHASE
Page 120 and 121:
Appendix 26 DRAWING NO. 4E TENAGA N
Page 122 and 123:
Appendix 27 DRAWING NO 5A : SINGLE
Page 124 and 125:
Appendix 27 DRAWING NO 5C : SINGLE
Page 126 and 127:
Appendix 28 DRAWING NO 5E: 3 PHASE
Page 128 and 129:
Appendix 29 TENAGA NASIONAL B E R H
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