INTELLIGENT CONTROLLER

• US 20120236442A1
• Filed: 12/02/2009
• Published: 09/20/2012
• Est. Priority Date: 12/02/2009
• Status: Abandoned Application

• Current Assignee: Manchanahally Venkataramasastry Satyanarayana, Srikanth Kashyap Satyanarayana
• Original Assignee: Manchanahally Venkataramasastry Satyanarayana, Srikanth Kashyap Satyanarayana
• Inventors: Satyanarayana, Manchanahally Venkataramasastry, Satyanarayana, Srikanth Kashyap
• Application Number:
  US13/512,912
• Publication Number:
  US 20120236442A1
• Time in Patent Office: Days
• US Class Current: 361/35
• CPC Class Codes: G05F 1/70 Regulating power factor; Regulating reactive current or power

Abstract

Described herein is an intelligent controller for management and control of electrical distribution transformer either located within the transformer or outside the transformer, housed in a separate enclosure and mainly comprising: a. input terminals (3,4) wherein the distribution transformers output is terminated; b. output terminals wherein the load is terminated (3.8(1), 3.8(2)); c. a power supply derived internally; d. a set of built-in contactors (3.7(1), 3.7(2)) to control the load; e. a set of in-built transducers, programmable digital input and output terminals; f. a communicable Real Time Embedded System (3.11) whose Operating characteristics can be programmed either through a local MMI or through a wired &/wireless communication interface after proper user authentication; and g. a capacitor (3.9(1), 3.9(2)) to improve the PF of the load, said-capacitor bank (3.9(1), 3.9(2)) is controlled by the RTES (3.11).

Claims

1. An intelligent controller for management and control of an electrical distribution transformer either located within the transformer or outside the transformer, housed in a separate enclosure and comprising:

a. input terminals wherein the distribution transformer'"'"'s output is terminated;

b. output terminals wherein the load is terminated;

c. a power supply derived internally;

d. a set of built-in contactors to control the load;

e. a set of in-built transducers, programmable digital input and output terminals;

f. a communicable Real Time Embedded System whose operating characteristics can be programmed either through a local MMI or through a wired and/or wireless communication interface after proper user authentication and comprising of;

i. means to derive the operating characteristics based on the power rating of the distribution transformer;

ii. means to control the load and its PF;

iii. means to record measured & and

derived parameters;

iv. means to record power system events;

v. means to record performance data; and

vi. means to communicate the recorded data; and

g. a capacitor bank to improve the PF of the load, said capacitor bank is controlled by the RTES.

2. The intelligent controller for management and control of distribution transformer as claimed in claim 1, further comprising means to detect distribution transformer over load and consequently disconnect and re-connect the load so as to prevent failure of distribution transformer.

3. The intelligent controller for management and control of distribution transformer as claimed in claim 1, further comprising means to detect over and under voltage across load terminals and consequently disconnect and re-connect the loads based on the safe limits of the terminal voltages.

4. The intelligent controller for management and control of distribution transformer as claimed in claim 1, further comprising means to detect over current phenomenon in any of the phases and unbalanced current or earth fault and consequently disconnect the loads until manual intervention.

5. The intelligent controller for management and control of distribution transformer as claimed in claim 1, further comprising means to detect phase sequence reversal and activate an alarm, which will reset itself if the phase sequence returns to normalcy.

6. The intelligent controller for management and control of distribution transformer as claimed in claim 1, further comprising means to re-connect loads to the transformer following the interruption of load circuits in a sequential manner with a delay between “

switching ON”

of the load circuits.

7. The intelligent controller for management and control of distribution transformer as claimed in claim 1, further comprising means to measure and correct the PF by switching capacitor bank.

8. The intelligent controller for management and control of distribution transformer as claimed in claim 1, further comprising means to record and communicate on demand through wired/wireless configuration data, measured and derived parameters, fault records, disturbance records, event records and load low data.

9. The intelligent controller for management and control of distribution transformer as claimed in claim 1, further comprising a friendly MMI and local and remote communication interface wherein the user-enabled settings comprise of not more than the transformer capacity in kVA and line voltage.

10. The intelligent controller for management and control of distribution transformer as claimed in claim 1, which is adequately secured through multi layer authentication.

11. The intelligent controller for management and control of distribution transformer as claimed in claim 1, wherein the transformer used is either oil or air cooled.