Projeto Básico do Sistema de Transmissão Associado às Usinas do Rio Madeira e a Aplicação dos Procedimentos de Rede do ONS Dalton O. C. Brasil Delfim M. Zaroni Mauro P. Muniz ONS ONS ONS Brasil Brasil Brasil Paulo Gomes ONS Brasil 1
Dalton de Oliveira Camponês do Brasil Engenheiro Eletricista pela Escola Politécnica da USP em 1972 e Mestre em Ciências pela UFPE em 1996. Trabalha desde 1998 no ONS Operador Nacional do Sistema Elétrico e atualmente é Assessor Técnico da DAT Diretoria de Administração da Transmissão. Anteriormente ao ONS, atuou na iniciativa privada como consultor por um período de quase trinta anos, tendo foco na área de estudos de planejamento e engenharia de sistemas elétricos de potência. Participou na implantação de vários projetos de grande porte, como sistema de transmissão de Itaipu em 765 kv e 600 kv CC, na implantação das interligações Norte-Nordeste e Norte-Sul, bem como nos sistemas de 500 kv das regiões Norte, Nordeste e Sul. Exerce a coordenação do Comitê de Estudos C4 Desempenho de Sistemas Elétricos do Cigré Brasil desde 2010. 2
Sistema de Transmissão do Madeira CARACTERIZAÇÃO DO SISTEMA DE TRANSMISSÃO Sta. Elena Boa Vista Coaracy Nunes Macapá Balbina Jurupari S.Maria Manaus Belo Monte Tucuruí São Luiz Fortaleza Imperatriz Marabá Teresina Açu Sistema Natal Receptor P.Dutra Samuel Colinas S.J.Piaui Acre Santo Porto Rondônia Antônio Velho Recife Ariquemes Jirau Miracema Maceió Ji-Paraná Xingo Sinop P.Bueno Irecê Aracaju Jirau Sorriso Gurupi Gov.Mang Vilhena B.J.Lapa Salvador Manso S.da Mesa Rianópolis Funil Cuiabá Jauru Ribeirãozinho Brasília Rondonópolis Emborcação T.Marias Corumbá C.Grande Sistema Receptor Belo Horizonte Vitória SE Campos Rio de Janeiro Ivaiporã São Paulo Itaipu Santo Antônio 2375 2375 km km Curitiba Itá Sto.Angelo Blumenau Garabi C.Novos Uruguaiana Porto Alegre Livramento Candiota 3
HVDC Madeira Transmission System 4
SE Porto Velho 44x71,6MW S. Antônio Jirau LOTE 1 4x954MCM - TC - 105km 44x75MW Filtro AC 1575 MVA 1575 MVA Filtro AC Filtro AC 1575 MVA 1575 MVA +600kV CC Pólo 1 1575MW Pólo 2 1575MW -600kV CC 4x2312MCM 2375km 4x2312MCM 2375km Back-to-back P. VelhoSamuel Ariq. J. Paraná P.Bueno Vilhena 400 MVA 2x954MCM 12 km +600kV CC Pólo 1 1575MW Pólo 2 1575MW 4x2312MCM 2375km Filtro AC 4x2312MCM 2375km -600kV CC LOTE 3 LOTE 3-120/250 Mvar Trindade 400 MVA Rio BrancoAbuna Univers. 3x(-70/100) Mvar SI 41km Transmission System Line Diagram LOT E 2 LOTE 4 CE -25/50 Mvar PVTE - ABB CE -25/50 Mvar Jauru 150km 165km 118km 160km 354 ETE - ABB IEMADEIRA - ALSTOM 1x750MVA LOTE 5 1x136 Mvar Coxipo LOTE 7 Cuiabá Ribeirãozinho Rio Verde 364 km 242km 1x750MVA MT Itumbiara Pólo 1 1475MW Pólo 2 1475MW Pólo 1 1475MW Pólo 2 1475MW SE SE Araraquara LOTE 2 Araraquara (Furnas) 3x1250MVA LOTE 6 Atibaia Araraquara (CTEEP) 305km 160km 30km
System Condition 6
Nominal Rating /Overload / Reliability Nominal Rating : DC Voltage: Converter DC Current: HVDC Transmission Lines: DC Power: Reversed DC Power: Bipoles Overload at Maximum Temperature: 33% for 30 minutes 50% for 5 seconds Overload at Low Ambient Temperature: To be informed 600 kv 2,625 A 5,250 A 3150 MW 2947 MW Reliability (Target per year): Total Availability: 99% Pole Forced Outage: 2.5/year Bipole Forced Outage: 0.2/year 7
Operating Modes A.Bipolar/Monopolar Operation: Bipolar Operation Monopolar Ground Return Operation Monopolar Metallic Return Operation B.Operating Modes in Bipolar or Monopolar Operation Nominal Voltage Operation Reduced Voltage (70%) Operation High MVAr Operation Paralleled Transmission Lines Operation Paralleled Converters Operation Reversed Power Operation 8
Operating Modes L 1 P 1 NBS MRTB NBS GRTS P 2 L 2 L 3 P 3 NBS MRTB NBS GRTS P 4 L 4 9
Reactive Power and AC Filters Inverter Rectifier Reactive Power Requirements: Power Factor at the Connection: 1.0 0.93 (*) Balance with 1 bank out of Service Steady State Voltage Change: 5.0 % 5.0% (*) Power Factor Generating Units up to 0.93 capacitive AC Filters: Individual harmonic voltage distortion limits to be attended with 1 filter bank out of service. 13.8 kv Voltage < 69 kv Voltage 69 kv Odd Even Odd Even Order Limit Order Limit Order Limit Order Limit 3rd to 25th 1.5% 3rd to 25th 0.6% 27th 0.7% All 0.6% 27th 0.4% DTHT = 3% DTHT = 1.5% All 0.3% 10
Reactive Compensation - Bipoles 1 and 2
Reactive Compensation - BtB
Master Control Main Tasks: Is a High Level Control protecting and coordinating the generationtransmission system. Re-distribute the active power between Bipole 1 and Bipole 2 upon loss or limitation of HVDC transmission capacity. Re-distributed the active power from the BtB to Poles in operation upon loss or limitation of the Back to Back transmission capacity. Avoid self excitation of the generators in Jirau and Santo Antonio by limiting the maximum amount of filters connected to the 500kV AC-network. Reduce possible overvoltage on the 500 kv AC-networks by disconnecting AC-filters. Balance and control the reactive power exchange between the HVDC converter station and the corresponding AC-network. Restoration of active power balance at DC/AC-related limitations (Porto Velho 500 kv AC and Araraquara 500 kv AC network). 13
Dynamic Performance Requirements: Current Order Response: 100 ms Power Order Step Response: 150 ms AC Faults Response: 200 ms DC Line Response: 100 ms Do not occur Commutation Failures in the following conditions: Faults at Rectifier; During switching of transmission lines or equipment belonging to the Converter Stations; For voltage drops with the final value not below 85% in all phases. 14
CONCLUSION - MAIN DIFFICULTIES A. Deadlines: Very complex project 3 months for the submission of the basic design projects and a period of 4 months for the review and approval of their conformity with the Technical Annex were not enough. B. Technical Specification vs. Functional Specification : equipment acquisition was based on the Technical Annex, which does not detail adequately the technical characteristics of equipment to be supplied by manufacturers. It is believed that this was one of the aspects that required most of the discussions on the interpretation of technical requirements during the basic design. C. Division into Lots: There is no doubt that the division of the transmission installations into lots for the auction process is a pillar to increase competitiveness and thereby achieve low tariffs. However it imposes some difficulties: The sharing of the converter reactive compensation and the AC filters; The compatibility of the insulation levels of the several installation connected to the same AC switchyard; The operational interaction required by control and protection schemes D. The absence of coordination in charge of conducting the necessary compatibility of requirements, deadlines and concerns from agents who share the facilities. 15 E. Confidentiality Aspects.
Thank you for your attention! Dalton O. C. Brasil docb@ons.org.br 16
Division into Lots Possible Main Alternatives A.Just one Lot: Technically the best B.Same bipole as a Lot C.All the convertors at the same station as a Lot 17
Pros and Cons - Alternatives B and C B. Same bipole as a Lot Clear owners identification of each bipole More guarantee of time schedule of each bipole Lower possibility to optimize filters and reactive compensation design C. All the convertors at the same station as a Lot Lower necessity of sharing of installations Simpler coordination at the same converter station, avoiding complex coordination between filter design, insulation coordination and control philosophies Enabling duplication and scale earning Pre-existance of successful commercial experience Some concern about coordination of controls between rectifier and inverter terminals belonging to different owners 18
Montagem superestrutura prédio 1 de Válvulas
Transformadores conversores de 500 e 230 kv em Porto Velho - RO