WO2014115164A2

WO2014115164A2 - Title: wired / wireless communication enabled remote controlled rotating phase selector cum high speed circuit breaker with remote current settings

Info

Publication number: WO2014115164A2
Application number: PCT/IN2014/000036
Authority: WO
Inventors: Venkatakrishnappa Sukumara GONIBEED
Original assignee: VANI, Sukumar
Priority date: 2013-01-24
Filing date: 2014-01-20
Publication date: 2014-07-31
Also published as: WO2014115164A3

Abstract

The present invention relates to a dynamic power distribution management system for controlling power distribution without disturbing the existing distribution network and maintaining the grid discipline while distributing the power and method thereof. The dynamic power distribution management system of the present invention includes at least three smart grid switches, current diverter cum programme processor boards, microcontroller, modem and power supply housed inside a closed enclosure. The present invention leads to method for distributing, remote current setting to limit load distribution, to detect the load requirement, feeder fault and control the distribution dynamically. This also relates to supply of single phase power to all the consumers for 24 hours in the existing three lines and three phase power at any guaranteed time for any specific duration in the same existing three lines without any disturbance.

Description

TITLE: WIRED / WIRELESS COMMUNICATION ENABLED REMOTE

CONTROLLED ROTATING PHASE SELECTOR CUM HIGH SPEED CIRCUIT BREAKER WITH REMOTE CURRENT SETTINGS APPLICANT NAME: MRS.VANI SUKUMAR

PRIORITY APPLICATION NUMBER: 324/CHE/2013 DATED 24/01/2013

FIELD OF THE INVENTION

The present invention, in general relates to the field of Wired/Wireless communication enabled remote controlled rotating phase selector cum high speed circuit breaker with remote current settings" applications, such last mile connection to convert a dumb grid to a smart grid.

DESCRIPTION OF RELATED ART

Power is an essential part of our life. The majority of the power generated has many side effects. Atomic energy results holocaust, if safety measures fails. Thermal power generation leads to global warming, Hydel power generated by nature dependence, renewable energy has minuscule power generated.

The power generation is much lesser than the demand, hence it is essential to bridge the gap between generation and consumption if the generation lags, and control on distribution becomes essential .The only solution to match the consumption to generation is SMART GRID. Most of the products available in the market relates to smart metering, smart data acquisition and communication. There is no tool to control the distribution dynamically after the process and decision.

LIMITATION:

Universally in order to supply the power through four wire system, the primary side of the distribution transformers connected in delta and the secondary side is connected in star. To distribute the power 1 1KV feeder lines run into hundreds of kilometres. Thousands of distributions transformer are connected to these feeders. It is impossible to supply single phase power on the LT line by disconnecting supply of one or two phases on the HT line. In order to give impetus to the agriculture production, most of the state governments are giving

l free or subsidized power to agriculture. The demand for consumption of power is for higher than power generation resulting in substantial gap between them. Since there is no control on distribution, the frequent overloads occurs on grid. This has resulted in GRID FAILURES.

In order to match the distribution to generation planned and unplanned blackouts are implemented by the utility agencies and companies (electricity boards and descoms) this has resulted in cascading effect of drawing the power when available and the grid fluctuates violently. This voltage fluctuation damages agriculture pumps, commonly used electrical gadgets such as fan, light, television etc, and transformers due to overload. In addition to this, the distribution losses have increased substantially.

Many times blackout runs to fourteen to sixteen hours. Though many state government committed to supply single phase power for 24hours and three phase power at guaranteed time are not able to implement due to technical difficulties. Some of the state government have already segregated the agriculture feeders from domestic, commercial and industrial feeders. Though segregation has helped to control peak power, it has not addressed meny issues such as grid discipline, voltage fluctuation, burning of motors, transformers etc

OBJECTIVE OF INVENTION

Electricity boards and Distribution companies are finding lot of difficulty in controlling the power distribution. Without proper control farmers, domestic consumers industry, utilities and EB are put to lot of hardship. Facility is available to monitor and no tool exist for implementation. Many experiments were made to achieve control, but none of them gave tangible results due to peculiarity of distribution. Gujarat government in order to achieve some control has spent thousands of crores, acquired acres of lands, drawn several kilo meters of HT and LT lines etc. This invention is a very cost effective solution and a last mile connection to implement smart power solution in the real sense. This will be a win-win situation to everybody

SUMMARY OF INVENTION:

The present invention which will not only monitor the Distribution of power from the Grid but also dynamically control the distribution from the grid without distributing the existing distribution network. The present invention leads to method for distributing, remote current setting to limit load distribution, to detect the load requirement , feeder fault and control the distribution dynamically. This also relates to supply of single phase power to all the consumers for 24 hours in the existing three lines and three phase power at any guaranteed time for any specific duration in the same existing three lines without any disturbance. This meets the requirement of all state government's commitment

The present invention is to invent a novel system and method which shall overcome all the setbacks to convert a dumb grid to a smart grid in real sense This is also ,an add on retrofit substitute solution for cumbersome process of segregation of agricultural feeders from industrial, commercial and domestic feeders. This is also a Novel solution for voltage fluctuation at the tail end of distribution. There by, leading to massive cost savings to the consumer by protecting the gadgets by burning due to voltage fluctuation.

THIS SYSTEM DRASTICALLY MINIMIZES THE DRAWING OF UNAUTHORIZED POWER, HENCE FINANCIAL LOSS DUE TO POWER THEFT WILL REDUCE. EFFECT OF OVERLOAD AND SHORT CIRCUIT AT THE DISTRIBUTION POINT OF ANY ONE CONSUMER WILL NOT AFFECT THE OTHER CONSUMERS. RE-CONNECTION OF FAULTY FEEDERS IS ALSO IMPLEMENTED THROUGH THE REMOTE CONTROL. HENCE LOSS OF REVENUE DUE TO INTERRUPTION OF POWER RAISING OUT OF THE FEEDER FAULT WILL BE MINIMIZED AND ALSO MANPOWER REQUIREMENT WILL BE REDUCED.

This system empowers Distribution Companies to maintain "GRID DISCIPLINE". There by preventing catastrophes, such as, the recent large scale power outage that happened in the northern grid

DESCRIPTION OF THE INVENTION

The present invention relates to a dynamic power distribution management system for controlling power distribution without disturbing the existing distribution network and maintaining the grid discipline while distributing the power and method thereof

The dynamic power distribution management system of the present invention includes atleast three smart grid switches, current diverter cum programme processor boards, microcontroller, modem and power supply housed inside a closed enclosure, suitable for out door duty as well The smart grid switch of the present invention comprises of two drums. Inner drum and outer drum. Outer drum is fixed. Inner drum rotates inside the outer drum. Three phases (R, Y, B,) are connected to the outer drum terminals which are placed at 120 degrees arc. Additional three output connection are connected to the same outer drum below the phase connection contacts terminals. ( main contact M .C) A set of springs with multiple contact are placed on the copper plate which is fixed on the outer surface of the inner drum. When inner drum rotates, copper plate makes contact between one of the phases and the output connection terminals through the spring contacts. All the three output contacts are shorted to take power output. In this way by rotating the drum, when any one of the additional output contact. Can be made to contact with any one of the phases (ie R Y B). In other words any one of the phase can be selected to power the output. By this method any phase can be connected to any line at any time. In other words, in the existing distribution system, without disturbing, using three switches same phase (R or Y or B) can be connected to all the three lines (single phase power is available for 24 hours) and three different phases (R, Y, B) can be connected to the same three lines (Three phase power for specific time at specified guaranteed time) Two co axial solenoid coil is housed inside the rotating drum. Closing coil and opening coil. There is a CRGO ring core inside the coils. When closing coil energizes CRGO ring core moves downward. When opening coil energizes CRGO ring core moves upward. When core moves downward it makes contact with M.C and output stem from which the power output is tapped. SCR, IGBT, ESBT or any static switch is connected across M.C and output stem. This will divert the current and eliminates the arcing or sparking while closing or opening of the contact between MC and output stem. While closing it senses zero crossing of voltage to reduce inrush current and while opening it senses output current to eliminate voltage transient and re-striking of arc or spark. Above operation is operated through mobile, GSM, GPRS, PLCC, Bluetooth, RF, IR, or any communication devises.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING

The description of the accompanying Figure (1) is given along with the explanation of the invention.

S.NO PART NAME PART NO

1 Open coil 1 2 Closed coil 2

3 Single phase out put 3

DETAILED DESCRIPTION OF THE INVENTION

The present invention discloses a dynamic power distribution management system for controlling power distribution without disturbing the existing distribution network and maintaining the grid discipline while distributing the power by means of supplying single phase in all the three lines for a desired time and supplying three phase power in the same three line and transferring the power from one phase to other phase dynamically through wired/wireless communication enabled remote controlled rotating phase selector cum high speed circuit breaker configuration, and method thereof. The dynamic power distribution management system of the present invention includes atleast three smart grid switches, current diverter cum programme processor boards, microcontroller, modem and power supply housed inside a closed enclosure. Suitable for out door duty as well

The smart grid switch of the present invention comprises of two drums. Inner drum and outer drum. Outer drum is fixed. Inner drum rotates inside the outer drum. Both the drums are made up of nylon cast material. Three phases (R, Y, B,) are connected to the outer drum terminals which are placed at 120 degrees arc. Additional three connections are connected to the same outer drum below the phases connection contacts (MC.)

A set of Beryllium copper springs with multiple contact placed on the copper plate which is fixed on the outer surface inner drum. Beryllium copper has been used, because of its excellent spring properties to get good spring contact for heavy current. Three copper plate's are fixed on the inner side of the outer drum .Each phase(R or Y or B) are terminated to these terminals. Ac synchronous motor is fixed on top of the outer drum. Ac synchronous motor has a magnetic core and gear arrangement to produce 8 RPM which is operated by 230V AC. The shaft of the motor is coupled to the inner drum. When motor start to rotate, the inner drum also rotates

When motor is ON, inner drum rotates. Any one phase (R or Y or B) connected to its terminal makes multiple contact with Copper plate through beryllium copper springs which is fixed on the outer surface of inner drum. Three additional connection terminals on the outer drum are shorted to take the power output. In this way by rotating the drum, any one of the phases (i.e. R Y B) is selected to power the output .By this method any phase can be connected to any line at any time. In other words, in the existing distribution system, without disturbing them, using three switches, same phase (R or Y or B) can be connected to all the three lines (single phase for 24 hours) and three different phases (R, Y, B) (three phase at a guaranteed time for specific time ) can be connected to the same three lines.

Two cp axial solenoid coils are placed inside the rotating drum. The output connection is controlled by these solenoid coils. There is a CRGO ring core inside these coils. The closing and opening coil energies of CRGO ring core. CRGO ring core moves downward to close the contact and CRGO ring core moves upward to open the contact. When the CRGO ring core moves downward, it makes contact with MC and output stem. From the stem, power output is been tapped. In order to eliminate arcing or sparking during high speed breaker operation, a current diverting device like SCR, IGBT, ESBT or any static switch is connected across MC and Output stem. When MC and output stem makes contacts it senses zero crossing of voltage to reduce inrush current and when the Mc and output stem opens, it senses output current to eliminate voltage transient and re-striking of arc or spark.

Above operation is operated through mobile, GSM, GPRS, PLCC, Bluetooth, RF, IR, or any communication devises.

In one of the preferred embodiment the present invention shall disclose a dynamic power distribution management system for controlling power distribution without disturbing the existing distribution network and maintaining the grid discipline while distributing the power by means of supplying single phase power in all the three lines for a desired time and supplying three phase power in the same three lines and transferring the power from one phase to other phase dynamically through wired/wireless communication enabled remote controlled rotating phase selector cum high speed circuit breaker configuration. The system includes atleast three smart grid switches, current diverter cum programme processor boards, microcontroller, modem and power supply housed inside a closed enclosure suitable for outdoor application. The inventiveness of the invention lies in the smart grid switch. The smart grid switch comprising of a stationary outer drum, a rotating inner drum, two top and bottom solenoid coils and CRGO ring core with circular copper ring arrangements. The stationary outer drum comprises of inner circumferential region and outer circumferential region. The outer circumferential region has three set of input terminals placed at 120 degree apart at the upper portion and three set of outer terminals similarly arranged below the input terminals at the lower portion. The inner circumferential region has arc shaped metal plates arranged backside side of the each of the input and output terminals. Further a synchronous motor is fixed on the top of the outer drum to rotate the s inner drum.

The rotating inner drum is housed inside the stationary outer drum. The inner drum comprises of two bearing assembly fixed on the top and bottom region configured to allow rotation of the inner drum by means of the synchronous motor. The outer circumferential region of the inner drum includes arc shaped copper plate covering the complete length of any one input terminal and the corresponding output terminal. A specially designed speed breaker shape multiple contact beryllium copper leaf spring is fixed on the arc shape copper plate to provide high pressure multiple contact with the terminals to reduce voltage drop and losses while carrying very high current.

The top and bottom solenoid coils are placed inside towards the upper portion of the inner drum and is housed on a specially designed base over which specially designed pair of multiple contact beryllium copper leaf springs are attached to make high pressure multiple contact between them to reduce the voltage drop and the losses when the large current flows through them, when the CRGO ring core with copper ring moves down and opens the contact between them when the CRGO ring core moves up. The outer diameter of the solenoid coil is less than the inner diameter of the inner drum for enabling free rotation of the inner drum to establish contact between any one input terminal to the corresponding output terminal at any time, and totally eliminating possibility of one phase making contact with the other phase

The CRGO ring core with circular copper ring arrangement is placed inside the solenoid coil and housed on a cylindrical shaped nylon cast which will prevent the ring core with copper ring from falling down. The outer diameter of the CRGO ring core is less than the inner diameter of the solenoid coil for enabling free movement of the CRGO ring core to open/close the contact.

In another preferred the present invention shall disclose a dynamic power distribution management method for controlling power distribution without disturbing the existing distribution network and maintaining the grid discipline while distributing the power by means of supplying single phase in all the three lines for a desired time and supplying three phase power in the same three lines at any desired time and transferring the power from one phase to other phase dynamically through wired/wireless communication enabled remote controlled rotating phase selector cum high speed circuit breaker configuration. The method comprises of following steps. Firstly the dynamic power distribution management system of the present invention is fixed at any convenient place in the pole of the existing distribution line or at any convenient place and connecting three phases R,Y and B to all the three smart grid switch.

Secondly sending commands to the system through a designated communication device configured sending commands

• to enable single phase power supply in all the three lines

• to enable three phase power supply in the same three lines

• to enable current setting remotely to control distribution

• instantaneous disconnection of power supply during overload and short circuit, and subsequent communication to server

• to enable reconnection of power supply after clearance of fault, reduction on load, without manual intervention

• to enable transfer of load from one phase to the other to balance the power distribution on distribution transformer individually (phase by phase) or collectively (RYB to BRY to YRB etc)

• to establish Bilateral communication for holistic control on power distribution

When the system receives first predetermined condition/command from a designated place or combined places through designated communication network/devise or combined network /devises, then the signal is processed and the system will enable single phase power supply in all the three lines by physically connecting any one phase (R,Y,or B) to all the three lines.

When the system receives second predetermined condition/command from a designated place or combined places through designated communication network devise or combined network /devises , then the signal is processed and the system will enable three phase power supply to the same three lines by physically connecting R phase to first line, Y phase to 2nd line and B phase to third line or any other cyclic combination without disturbing the phase sequence (R,Y and B/ B,R,and Y/ Y, B, and R) connection by disconnecting and reconnecting the switch and rotating the inner drum.

When the system receives third predetermined condition/command from a designated place or combined places through designated communication network/devise or combined network /devises , then the signal is processed and the system will enable to transfer the load from one phase to the other individually or collectively without changing the phase sequence to balance the load on the distribution transformer. when the system receives command signal for over load supply/short circuit condition then the system will disconnect the load from power supply by energizing the top solenoid coil thereby enabling the CRGO ring core to move up to open the high pressure multiple contact and communicate the status to the server or any other communication network.

When the system receives command signal for reduction in load and on clearance of short circuit , then the system enable reconnection of power to the load by energizing the bottom solenoid coil thereby enabling the CRGO ring core to move down to close the high pressure multiple contact.

When the system receive command signal for bilateral communication, then the system will communicate the status back to server or any other devises for holistic control on distribution

As per the invention the designated communication device is selected from the group comprising of mobile, GSM, GPRS, RF, WIFI, BLUETOOTH, or any communication devises or combination thereof.

In accordance with the invention the inner and outer drum is made up of nylon cast material.

According to the invention the input terminals and output terminals are arranged 20mm axially apart from each other.

APPLICATIONS

This is an add-on retrofit substitute for segregation of agricultural feeders from domestic.

Commercial and industrial feeders, without disturbing the existing distribution network. No need for land acquisition, no need to draw several hundred of kilo meters of high voltage line, no need to draw several hundreds of kilo meters low voltage lines, no need add lakhs of poles, no need to install thousands of new transformers. At a very high cost

In addition to the above, By dynamically balancing the load, the voltage fluctuation at every distribution point is eliminated. By this distribution companies can supply 24 hrs single phase supply in all the three lines and three phase supply in a guaranteed specified time. In the same three lines Losses in the pump motors/electrical gadgets resulting out of high voltage fluctuation is reduced. This also will reduce the frequent burning of motors/electrical gadgets. In addition to this, the distribution losses also is reduced. The efficiency of transformers, motors and distribution line will improve Burning of distribution transformer due to higher losses resulting out of Overload is minimized.

Supply of single phase or three phase power in all the three lines, at any time is set by a designated mobile or a remote controlled devise or can be set time based. This is regulated through the use of firewalls and thus cannot be operated by- any other mobile. Or remote controlled devise(RCD). The maximum amount of current that can be drawn by the consumer at any time also can be set with the same mobile or RCD. If the consumer exceeds the set value, the switch in that line will disconnect the power to that particular line at the distribution point of that consumer. In other words the overload by one consumer will not effect the other consumer, Once the switch disconnects the power due to overload, a communication is sent to the designated mobile indicating an "over load". This can be reset only by the designated mobile. /RCD. Effect of overload and short circuit at the distribution point of any one consumer will not affect the other consumers .Reconnection of faulty feeder is also implemented through mobile/RCD . Hence loss of revenue due to interruption of power rising out of feeder fault is minimized and also manpower requirement for connection and disconnection of power is reduced. Drawing of unauthorized power can be minimized drastically, hence, Financial loss due to power theft will reduce.

There is no need to segregate agriculture/rural consumer from domestic, commercial and industrial consumers, there by leading to massive cost savings and other connected hassle. It empowers Distribution Companies to maintain "GRID DISCIPLINE" There by preventing catastrophes such as the recent large scale power outage that happened in the northern grid. While considerable emphasis has been placed herein on the various components of the preferred embodiment, it will be appreciated that many alterations can be made and that many modifications can be made in the preferred embodiment without departing from the principles of the invention. These and other changes in the preferred embodiment as well as other embodiments of the invention will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation.

Claims

I Claim,

1. A dynamic power distribution management system for controlling power distribution without disturbing the existing distribution network and maintaining the grid discipline while distributing the power by means of supplying single phase power in all the three lines for a desired time and supplying three phase power in the same three lines and transferring the power from one phase to other phase dynamically through wired/wireless communication enabled remote controlled rotating phase selector cum high speed circuit breaker configuration, the said system includes atleast three smart grid switches, current diverter cum programmed processor boards, microcontroller, modem and power supply housed inside a closed enclosure suitable for outdoor application

characterized in the said smart grid switch comprising of a stationary outer drum, a rotating inner drum, two top and bottom solenoid coils and CRGO ring core with circular copper ring arrangements, wherein the said stationary outer drum comprises of inner circumferential region and outer circumferential region, the said outer circumferential region having three set of input terminals placed at 120 degree apart at the upper portion and three set of outer terminals similarly arranged below the input terminals at the lower portion, the said inner circumferential region having arc shaped metal plates arranged backside side of the each of the said input and output terminals and a synchronous motor fixed on the top of the said outer drum to rotate the said inner drum, the said rotating inner drum which is housed inside the said stationary outer drum comprises of two bearing assembly fixed on the top and bottom region configured to allow rotation of the said inner drum by means of the said synchronous motor, the outer circumferential region of the said inner drum having arc shaped copper plate covering the complete length of any one said input terminal and the corresponding output terminal, and a specially designed speed breaker shape multiple contact beryllium copper leaf spring fixed on the said arc shape copper plate to provide high pressure multiple contact with the said terminals to reduce voltage drop and losses while carrying very high current the said top and bottom solenoid coils placed inside toward the upper portion of the said inner drum and housed on a specially designed base over which specially designed pair of multiple contact beryllium copper leaf springs are attached to make high pressure multiple contact between them to reduce the voltage drop and the losses when the large current flows through them, when the said CRGO ring core with copper ring moves down and opens the contact between them when the said CRGO ring core moves up, wherein the outer diameter of the said solenoid coil is less than the inner diameter of the said inner drum for enabling free rotation of the said inner drum to establish contact between any one input terminal to the corresponding output terminal at any time, and totally eliminating possibility of one phase making contact with the other phase the said CRGO ring core with circular copper ring arrangement is placed inside the said solenoid coil and housed on a cylindrical shaped nylon cast which will prevent the ring core with copper ring from falling down, wherein the outer diameter of the said CRGO ring core is less than the inner diameter of the said solenoid coil for enabling free movement of the said CRGO ring core to open/close the contact.

2. A dynamic power distribution management method for controlling power distribution without disturbing the existing distribution network and maintaining the grid discipline while distributing the power by means of supplying single phase in all the three lines for a desired time and supplying three phase power in the same three lines at any desired time and transferring the power from one phase to other phase dynamically through wired/wireless communication enabled remote controlled rotating phase selector cum high speed circuit breaker configuration, the said method comprises of following steps;

a. fixing the dynamic power distribution management system as claimed in claim 1 at any convenient place in the pole of the existing distribution line or at any convenient place and connecting three phases R,Y and B to the said three smart grid switch,

b. sending commands to the said system through a designated communication device configured sending commands

o to enable single phase power supply in all the three lines

o to enable three phase power supply in the same three lines

o instantaneous disconnection of power supply during overload and short circuit, and subsequent communication to server o to enable reconnection of power supply after clearance of fault, reduction on load, without manual intervention

o to enable transfer of load from one phase to the other to balance the power distribution on distribution transformer individually (phase by phase) or collectively (RYB to BRY to YRB etc)

o to establish Bilateral communication for holistic control on power distribution o to enable remote current setting to control power distribution through any or combination of all communication devises wherein when the said system receives first predetermined condition/command from a designated place or combined places through designated communication network/devise or combined network /devises , then the signal is processed and the system will enable single phase power supply in all the three lines by physically connecting any one phase (R,Y,or B) to all the three lines. when the said system receives second predetermined condition/command from a designated place or combined places through designated communication network/devise or combined network /devises , then the signal is processed , the system will enable three phase power supply to the same three lines by physically connecting R phase to first line, Y phase to 2^nd line and B phase to third line or any other cyclic combination without disturbing the phase sequence (R,Y and B/ B,R,and Y/ Y, B, and R) connection by disconnecting and reconnecting the switch and rotating the inner drum. when the said system receives third predetermined condition/command from a designated place or combined places through designated communication network/devise or combined network /devises , then the signal is processed and the system will enable to transfer the load from one phase to the other individually or collectively without changing the phase sequence to balance the load on the distribution transformer. when the said system receives command signal for over load supply/short circuit condition then the system will disconnect the load from power supply by energizing the top solenoid coil thereby enabling the CRGO ring core to move^' up to open the high pressure multiple contact and report back to communication devises the status when the system receives command signal for reduction in load and on clearance of short circuit , then the system enable reconnection of power to the load by energizing the bottom solenoid coil thereby enabling the CRGO ring core to move down to close the high pressure multiple contact. when the system receive command signal for bilateral communication, then the system will communicate the status back to server or any other^' devises for holistic control on distribution

3. The method as claimed in claim 2 wherein the said designated communication device is selected from the group comprising of mobile, GSM, GPRS, RF, WIFI, BLUETOOTH, PLC or any communication devises or combination thereof.

4. The said inner and outer drum of claim 1 & 2 is made up of nylon cast material.

5. The system as claimed in claim 1 wherein the said input terminals and output terminals are arranged 20mm axially apart from each other.