Multi-Function Recorder
Be prepared in today’s increasingly competitive and dynamic industry. The Multi-Function Recorder (TR2000) series was designed to be at the leading edge of technology. These recorders represent the next generation of utility analysis monitoring. A farsighted product, which uses the most advanced technology available, yet remains fully compatible with the successful TR-100 and DL-8000 series recorders.
Today’s customers expect superior solutions for their needs. Concerned with obtaining optimal power flow via the network, while still retaining control and reliability, they are demanding not only increased, but integrated functionality to be provided in a cost effective product. Such a product aids asset management and planning, while remaining fully flexible and compatible with existing systems and producing real time answers. The total package is not complete without the superior, reliable support and after sales service, which one can expect from RiS.
Such solutions can only be met by listening to the customer and utilizing advanced technology in a variety of unique and important applications. The bottom line is that our customers wish to obtain a greater degree of useful information to gain a competitive advantage, retain their customers and lower operational costs.
The TR2000 has many functions aimed at obtaining not just standard data, but more useful information and presenting it in such a way as to aid engineering personnel making rapid decisions. For a relatively small capital outlay the recorder can have a big impact on the effectiveness of the power system, via protection, monitoring, minimal maintenance and asset management.
The TR2000 family has a range of models, allowing the customer to choose that which best meets technical requirements and budgetary constraints.
The TR2000 is a dynamic monitoring system, producing information in an accessible format to enable direct action to be taken, sometimes even before a potential problem becomes a reality. Communication with the recorder can be both local and remote allowing for flexibility of response and the ability to obtain real time information.
A major benefit of the TR2000 is that it aids real time monitoring of a power system. This could enable the increased loading of transmission lines, so a greater amount of control could be obtained over the transmission networks producing substantial resultant savings. In a deregulated environment the TR2000 provides the necessary data to increase revenues.
software overview
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The TR2000 is enhanced with a wide range of application software, utilizing Windows95™, Windows98™ and Windows NT™ and includes functions for communicating, configuring, downloading, displaying and analyzing the TR2000 itself and its records. Special applications are used to report on a range of parameters that define power quality. Automated processes include an Expert System to minimize the amount of engineering time needed to process the data records. A flexible reporting scheme enables the right information to be sent to the right person at the right time and enables the selling of data to Energy Service Providers. a solution for your business needs |
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The TR2000 has a wide variety of
functions; and is particularly suitable for use in all of the following applications:
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very high speed transient recorder
The high speed option allows for all analog inputs to be sampled synchronously up to 195,000 times per second. Digital inputs can also be sampled at this rate although in most cases they would be recorded at an integer sub multiple. The high speed recorder is ideally suited to special applications such as lightning studies, monitoring high speed switching in Static VAr compensators (SVCs) and Flexible AC Transmission Systems (FACTS).
Analog inputs are sampled at up to 384 samples per cycle with a maximum record length of 30 seconds. The VT & CT waveforms and auxiliary protection contacts are recorded before, during and after a fault clearance. Expert System software is used to analyze this data and report on any abnormalities. Other information can be extracted for fault impedance calculations, power quality and system maintenance. The transient fault recorder is used for post fault analysis in verifying protection and circuit breaker operations and also fault clearance times. Information about fault type, fault levels and duration are an aid to fault location and clearance. Transient and incipient faults are also quantified, to allow improvements in supply security to be made.
Analog inputs are sampled at up to 2 samples per cycle with a maximum recording length of 30 minutes. The disturbance recorder provides information which enables improved understanding of the power network. Longer term events are monitored by the Disturbance Recorder. Frequency, RMS and phasor information are stored per channel. These are used to compute a wide variety of power system quantities. This function is particularly useful in recording re-close sequences and power and frequency stability events. Additionally, it can be used to extend the pre and post fault times of a transient record. Triggers for the Disturbance Recorder include low frequency oscillation on the power & frequency signals.
As an option all of the RMS phasor quantities can be recorded continuously in a 2 week circular buffer. Very subtle events, which do not trigger the Disturbance Recorder, can be recovered and analyzed from the Disturbance Logger.
The input and computed quantities are logged as maximum, minimum and average quantities every minute. One years worth of data is saved by the system. This enables historical data at a reduced sampling rate, to be retrieved for trend and power quality analysis. The data can be used to replace circular chart recorders to verify voltage regulation and balancing.
Power quality can be determined by a set of parameters. Those recorded by the TR2000 series include:
- Voltage and frequency profiles
- Voltage dips and surges
- Loss of supply
- Harmonic content
- Flicker
- Imbalance
Voltage dips are stored in a database and are classified by severity and duration. A 3-D plot identifies any problem equipment or sites. Comparisons of different sites or improvements in performance are possible following system reinforcement or changes in protection settings. Flexible display options allow this information to be shown in a wide range of styles: text or graphics, histograms, scatter plots, etc. Measurements can be compared with standard values, such as EN50160.
A very powerful feature of the TR2000 series is the ability to trigger on and record differential phasor measurements. Because the inputs are sampled at very regular intervals, the absolute angle of the positive sequence voltage vector can be computed very accurately. This value is compared with the angle from a remote location, normally the far end of a transmission line. Since the two TR2000s are effectively time locked together via an internal GPS receiver or external PPS and serial time code the difference in phase angle is used as a measure of system stability.
Based on the information in a transient record of a line fault and a
model of the transmission line impedance the distance to fault can be calculated.Source and remote end impedance's, remote end in feed and mutual coupling are used to compute a more accurate distance.
The source, remote and line impedance's may be entered in sequence component, per phase or per unit form. The fault distance is computed several times during the period of the fault and the results averaged. The fault impedance is also returned. This can be used with a complex impedance model to locate the source of a fault in a distribution network.
As well as triggering and logging the TR2000 series includes the ability to view analog and digital inputs and computed values in near real time. Measured values and waveforms can be seen remotely. These can replace or act as backup systems for:
- Waveform oscilloscope
- Panel meters
- Annunciator panel
- Vector display
All transitions on the digital inputs of the TR2000 are recorded and can be displayed independently or with a disturbance or logger record. The time resolution is 1 ms. Input point and time filtering are available to limit the number of events displayed.
on-line switch gear and battery condition monitoring
Circuit breaker operations are recorded and analyzed by the Expert System. The measurements from each operation are stored in a database and can be used in a number of programmable contact wear formulas.
The accumulated number of operations, arcing current and arcing time all contribute to wear of the main contacts. An added feature of the TR2000 is that by selecting one of the three standard formulas the optimum service time for each of switch gear can be determined.
The TR2000 series can also monitor the breaker coil currents and battery voltage. Trip coil profiling is a diagnostic tool used to highlight any degradation in the operation of circuit breakers.
The power values from the logger are used to compute energy demand over a variable interval. Peak demand and power factor can be tracked to help minimize energy cost for large consumers.
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plant commissioning and diagnostic tool The extensive set of functions within Display Station Analysis (DSA) allow it to be used in the installation and commissioning of power plant. Test records can be taken either manually or automatically and analyzed with DSA to check for correct operation of switch gear, transformers, etc. These records can be archived and used for comparison during future diagnostic checks. effective solutions Effective solutions to potential sources of measurement error are incorporated in the design of the TR2000 series. Possible errors and their related solution are shown below: |
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