Method for evaluating a transformer design

• US 7,376,664 B2
• Filed: 10/31/2003
• Issued: 05/20/2008
• Est. Priority Date: 10/31/2003
• Status: Expired due to Fees

• Current Assignee: ABB Research Ltd. (ABB Limited)
• Original Assignee: ABB Research Ltd. (ABB Limited)
• Inventors: Long, Thomas E., Smiley, Karen J., Cox, David N.
• Primary Examiner(s): Pardo; Thuy N.
• Application Number:
  US10/699,468
• Publication Number:
  US 20050097134A1
• Time in Patent Office: 1,663 Days
• Field of Search: 707/3, 707/10, 707/104.1, 707/101, 707/102, 707/103.Y, 707/6, 707/7, 707/103.Z, 716/1, 709/229, 709/225, 709/246, 324/765, 703/18
• US Class Current: 363/171
• CPC Class Codes: G06F 2111/08 Probabilistic or stochastic CAD
• CPC Class Codes: G06F 2119/06 Power analysis or power optimisation
• CPC Class Codes: G06F 30/00 Computer-aided design [CAD]

Abstract

A preferred method for evaluating a transformer design using data representing test results from a plurality of transformers and stored in a data base includes comparing the data representing test results to predetermined criteria for the test results to determine whether the test results satisfy the predetermined criteria. The preferred method also includes counting the number of the test results that do not satisfy the predetermined criteria, and generating an indication that a predetermined quantity of the test results do not satisfy the predetermined criteria if at least the predetermined quantity of the test results do not satisfy the predetermined criteria.

Claims

1. A method for evaluating a design for a transformer comprising:

(a.) providing a database comprising;

results of a test performed on each of a plurality of transformers;

criteria sets for evaluating the results of the tests, each criteria set being applicable to a particular transformer design; and

identification information associated with the criteria sets and the results of the tests, the identification data including transformer design identification;

(b.) retrieving the test results for a certain transformer design from the database using the identification information;

(c.) retrieving the criteria for the certain transformer design from the database using the identification information;

(d.) comparing the retrieved test results to the retrieved criteria;

(e.) counting the number of the retrieved test results that do not satisfy the retrieved criteria;

(f.) generating an indication that the certain transformer design needs further analysis only if at least a predetermined quantity of the retrieved test results do not satisfy the retrieved criteria;

(g.) displaying the indication on a display device;

(h) determining that the certain transformer design over-performs if the retrieved test results consistently exceed the retrieved criteria; and

(i) modifying the certain design to reduce the cost of components required by the transformer design.

2. The method of claim 1, wherein the predetermined quantity of the test results is a predetermined numerical total.

3. The method of claim 1, wherein the predetermined quantity of the test results is a predetermined percentage of the test results.

4. The method of claim 1, wherein the test is selected from the group consisting of no-load loss, impedance, transformation ratio, turn to turn faults, high potential, double induced, impulse, and heat run.