Tollgrade Lighthouse Sensor Pilot at CenterPoint Energy. Presented at SWEDE 2011

Transcription

1 Tollgrade Lighthouse Sensor Pilot at CenterPoint Energy Presented at SWEDE 2011

2 Outline History Objectives of Pilot Current Pilot Status Summary 2

3 History CNP has tried sensors/detectors before Too many wrong operations False Positives Sensor should not have triggered but did False Negatives Sensor did not trigger when should have Has advancement of technology made sensors applicable for CNP? 3

4 Objectives of Pilot Fault detection and location Will the equipment work as expected? Can this data expedite restoration? Managing load balancing Currently balance circuits at sub Record previously unknown oddities May be predicator to outage 4

5 Pilot Overview CenterPoint Responsibilities Identify CenterPoint project team members Select lead contact to coordinate project activity Assign resources to complete a system survey, site survey, and installation Work closely with vendor to develop plans to install sensor system Execute installation plan and verify operation of sensor system Evaluate the sensor system 5

6 Objectives of Pilot Get various departments buy-in Engineering Materials Reliability Operations Dispatching 90 day trial Seven sets of 3-phase units Communication of sensors back to vendor Access to website for data 6

7 Pilot Architecture CenterPoint Energy 7

8 System Survey Selected circuits for the pilot Identified problematic circuits for optimum system evaluation (utilizing input from Reliability Engineering Department) Employed maps of the problematic circuits to determine probable sensor and node locations 8

9 Map of Circuit #1 SUB

10 Map of Circuit # SUB 10

11 Site Survey Requirements Cellular Signal Truck Accessible 120V Source 35kV Installation 11

12 Sensor Components LightHouse MV Sensors monitors line parameters and communicates readings wirelessly to system headquarters. LightHouse SMS Software consolidates circuit measurements and events and provides a website interface 12

13 Lighthouse MV Specifications Operating range of 4KV to 35KV Clamps directly to conductor (#6 to 795) Inductively powered, with energy storage Operating temperature: -40 C to +85 C (-40 F to +185 F) Minimum current for full operation is 12A 16 samples per cycle Measurements Current (up to 17kA RMS) Fault and surge current Line temperature 13

14 Aggregator Agnostic Collector Support Collects data and sends back via cell phone technology 300 ft maximum line of sight distance to sensors 14

15 Product Installation 15

16 Product Installation Two days time frame Sensors and aggregator node easily installed Hot stick installation used for sensors Sensor signals received on SMS and verified soon after installation 16

17 Sensors Installed Transmission Line Proximity 17

18 Sensors Installed Capacitor Bank Transients Cap Bank Sensors 18

19 Fault Detection Circuit #1 Faulted 19

20 Fault Detection - Waveform 8000 Circuit #1 (sensor 2) Current

21 Momentary Event Waveform Circuit #1 - Momentary Event Waveform Sensor Location 2 A phase 21

22 Circuit #1 Load Profile 22

23 Circuit #2 Load Profile 23

24 Pilot Status Completed Site survey completed MVs installed SMS upgraded Circuits configured accounts added Initial load profile analysis completed Initial event analysis completed 24

25 Pilot Status Current/Future Current Evaluation of system accounts added Tracking concerns/issues Future Issues addressed Final evaluation Temperature sensing 25

26 Summary Too early to tell Some positive Accurately found fault location based on measured current Good customer service Some negative Failure of sensor to trigger Data needs to be presented differently 26

27 Questions? 27