Independent system operators

AEP Taps Siemens to Modernize HVDC System Welsh in Texas

American Electric Power (AEP) chose Siemens to modernize its HVDC back-to-back link at its 600-MW Welsh HVDC station in Titus County, Texas. Siemens will upgrade its 20-year-old system by installing new control and protection technologies, replacing the cooling, heating and ventilation, and incorporating new harmonic filters and shunt reactors. This will be the first Siemens mid-life control and protection HVDC modernization in the United States.

From ISO to DSO

Imagining a new construct – an independent system operator for the distribution network.

A new utility industry construct – the Distribution System Operator (DSO) – could help maximize the benefits of distributed energy resources.

Demand Response: Breaking Out of the Bubble

Using demand response to mitigate rate shocks.

In the minds of many policy-makers, DR has become associated with rate shocks, rate volatility, unpredictability, and loss of control over energy costs—the very things DR was designed to overcome. What can be done to change this?

Synchronizing on West Point

Could local generators be used either to regulate voltage or control the power factor on distribution systems in New York?

Reactive power is becoming a hot issue in many regions of the country. Regulators and grid operators are grappling with ways to account fairly for reactive power supplies, and to encourage such resources to come online where they are needed. These analyses, however, are largely ignoring a vast fleet of infrastructure already installed on the network. West Point military academy, for example, has four small synchronous generators that are used for combined heat and power or emergency power applications. If these generators also were used as synchronous condensers, they might supply additional revenue to pay for the distributed energy investment.

Legislative Hot Spots: From Texas to Ohio, New Jersey to Minnesota, Electric Restructuring Games Begin

Perhaps the only political prediction bound to come true this year is that the words ôelectric restructuringö will reverberate in nearly every stateÆs legislative chamber.

So says Matthew Brown, director of the energy project at the National Conference of State Legislatures.

But other factors support BrownÆs prediction. Public Utilities FortnightlyÆs informal survey of most states turned up similar results. Legislators know that the Clinton Administration and the U.S. Congress plan to introduce a federal bill this year.