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TIMRSM | Turbine Integrated Mortality Reduction

Protect Bats and Increase Operation Time

TIMRSM is Normandeau’s smart curtailment system that combines real-time risk assessment and alerting capabilities to increase operation time of wind turbines while decreasing bat fatalities from collisions.

With TIMRSM you can generate a high conservation benefit at a lower economic cost.

TIMRSM uses real-time bat activity and onsite wind speed to curtail turbines. See how it works.

TIMRSM alerts the SCADA when bats are detected, so the SCADA can curtail the turbines until bats are no longer detected. (Click to enlarge)

Significantly Reduce Bat Fatalities

TIMRSM reduces fatalities for all species of bats and is the first and only system proven to reduce Myotis fatalities (EPRI 2017). In a recent study TIMRSM reduced total bat mortality by 83% and Myotis mortality by 90%.

 

TIMRSM reduced bat mortality by 83% for all bats and by 90% for Myotis (EPRI 2017).

Reduction in Bat Fatalities by Species

Species

Total Carcasses

Normal Turbines (n=10)

Turbines with TIMR (n=10)

% Change

Hoary bat

59

48

11

-77

Silver-haired bat

46

42

4

-90

Eastern red bat

43

37

6

-84

Big brown bat

32

25

7

-72

Little brown bat

33

30

3

-90

Tri-colored bat

1

0

1

+100

Total

213

181

32

-83

Source: EPRI 2017.

Increase Operation Time

When compared to wind-speed-only curtailment, TIMRSM reduced total curtailment hours by 48% (from 361 hours to 172 hours) with a similar conservation benefit (EPRI 2017).

 

External to the SCADA

The SCADA system sees TIMRSM alerts the same way it sees any other data feed (like wind speed).

The TIMRSM communication system is external to the SCADA, which allows for ready integration into most wind facility operations. This requires only minimal customization without changes to the core SCADA system.

See theTIMRSM FAQ for more details.

How TIMRSM Works

TIMRSM is designed to receive onsite weather data collected from the nacelle and real-time bat activity data collected by ReBAT®, our patented remote bat acoustic technology system, which is installed on a subset of turbine nacelles (5% to 10%) at the facility.

TIMRSM calculates a relative risk value, which is displayed on a computer screen at the wind energy facility’s operations center and communicated to the SCADA system through industrial communication protocol (DNP3).

The SCADA responds by curtailing turbines or resuming normal operations. Although TIMRSM is fully automated, a human operator can override it. 


TIMRSM risk values are displayed on a screen at the wind energy facility’s operations center and sent to the SCADA system.

Contact
Stephen Lindsay
352.327.3266

The TIMRSM smart curtailment system was the result of research conducted by Normandeau Associates, Inc. and sponsored by the Electric Power Research Institute, Inc. Watch the video, View the final report.