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Electric transmission and electric transmission property rights: Issues and difficulties.

Electric transmission and electric transmission property rights: Issues and difficulties. Ross Baldick March 2004. Background. Restructured generation markets have resulted in a huge increase in generation, Transmission remains regulated,

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Electric transmission and electric transmission property rights: Issues and difficulties.

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  1. Electric transmission andelectric transmission property rights:Issues and difficulties. Ross Baldick March 2004

  2. Background. • Restructured generation markets have resulted in a huge increase in generation, • Transmission remains regulated, • New transmission expansion has been small in comparison: • May or may not be a bad thing! • Electric transmission is much more of an imposition on neighbors than fiber!

  3. Outline • Ownership of communications versus transmission, • Routing, • Security constraints, • Opposite flows cancel, • Property rights implications.

  4. Circuit-switched voice communication. Communication path. US Blue AT&Red

  5. Electric transmission ownership. Red Electric transmission TexasBlue system Jointly owned tie-lines

  6. Implications of Kirchhoff’s laws:no routing. Z Generation: 100 MW 33 MW flow 33 MW flow Demand: 100 MW 67 MW flow Y X Direct path from generator to load

  7. 100 MW capacity line 100 MW capacity line 100 MW capacity line Secure transmission operation. • Must operate to withstand any single outage, • Three lines on a single corridor, each with same “impedance” and nominal capacity of 100 MW, can only transmit 200 MW securely.

  8. Addition of line can reduce capacity. 100 MW capacity line 100 MW capacity line 100 MW capacity line 10 MW capacity line • Add line with same impedance but lower capacity, • Must operate to withstand any single outage, • Worst outage is loss of 100 MW line • Now can only transmit 30 MW securely.

  9. 100 MW flow from X to Y. Generation: 100 MW X 100 MW flow Y Demand: 100 MW

  10. 100 MW flow from Y to X. Generation: 100 MW X 100 MW flow Y Demand: 100 MW

  11. Opposite flows:net flow is zero. Generation: 100 MW Generation: 100 MW X 0 MW flow Y Demand: 100 MW Demand: 100 MW

  12. Property rights implications. • How do I define the product of transmission? • Produces ability to transmit power, • Ability to transmit power securely depends on sharing of flows: • A single line by itself has zero capacity! • But sharing of flows makes it difficult to define the service that a single line offers to the rest of the system!

  13. Property rights implications. • Compare to property right for a generator: • Energy it produces, • Can be sold at prevailing price. • Compare to property right for a communication line: • Bits it transmits.

  14. Property rights implications. • Further complications in defining transmission property rights due to historical “unphysical” definition of property rights! • Grandfathering of historical rights mechanisms, • Further complications still due to substitutability of local generation and transmission plus remote generation: • Coexistence of regulated and unregulated industry sectors is problematic!

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