Brief Description of the Set-Up and Activities of the Power and Telecommunication Coordination Committee (ptcc)




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Part II
The PTCC and its Secretariat


  1. Composition




  1. The PTCC shall comprise of all the members nominated to it by the Government of India from time to time.




  1. The PTCC has the option to co-opt additional members as may be necessary from time to time.




  1. The Deputy Director (PTCC) of the CWPC (PW) and the Divisional Engineer (Telegraphs) of Posts and Telegraphs Department will be the Joint Secretary (Power) and Joint Secretary (Telecom) respectively of the PTCC.




  1. Headquarters of the PTCC




  1. The PTCC shall have its headquarters at New Delhi provided that in the interest of the work, the Central Government may shift the headquarters in part or full to any other place within the Union of India.




  1. The power side of the PTCC would be attached to the CWPC (PW) and the telecommunications side to the P&T Department.



  1. Tenure of the PTCC and election of its Chairman and Vice-Chairman

The tenure of the present PTCC will be two years commencing from 1st April 1972. The nominees of CWPC (PW) and P&T in alternate years by rotation will hold the offices of Chairman and Vice-Chairman for one financial year. The PTCC can extend the term of the Chairman and Vice-Chairman, if they otherwise continue to be members of the PTCC.




  1. Functions of the Joint Secretaries


Joint Functions


  1. Obtaining data regarding specific proposed power parallelism cases in the standard questionnaire from together with fault current calculations




  1. Preparation of draft approval in specific cases after scrutiny and submission to the PTCC for decision. (Normally, the concurrence of the two Joint Secretaries should be sufficient to issue the clearance based on approved practices)




  1. Collaboration with foreign bodies and Indian Power Administrations for collection of statistical and engineering data on the subject. In this matter wherever and when necessary, the advice of Regional Communication and Power Engineers will be availed of to assist in the investigation of special problems and the collection of technical data.




  1. Maintenance of the accounts for their respective divisions for each financial year.




  1. Follow-up action on the decisions of the PTCC.




  1. Issuing of instructions on behalf of the PTCC for research work and field tests.




  1. Arrangements for publication of Technical Reports.


Functions of Joint Secretary (Power)


  1. Arranging to get necessary and relevant data in regard to power lines and systems together with values of earth resistivity measurements from the field units.




  1. Calculation of induction in individual cases and safe separating distances in specific instances for cases of lines of 220 KV and above.


Functions of Joint Secretary (Telecom)


  1. Obtaining necessary and relevant data in regard to all telecommunication lines involved in cases referred to the PTCC from field units.




  1. Checking the calculations carried out by the Joint Secretary (Power) and communication of route approvals in individual cases.




  1. Meetings of the PTCC




  1. The PTCC shall hold its meetings as frequently as possible but not less than once is six months.




  1. The meetings of the PTCC may be convened at any place within the Union of India. Generally the meetings are taking place once in a quarter.




  1. The meetings shall be convened by the Joint Secretary attached to the wing to which the Chairman belongs, with the approval of the Chairman.




  1. The Chairman or in his absence, the Vice-Chairman, will preside over the meetings of the Committee. In the absence of both the Chairman and Vice-Chairman at a PTCC meeting, the members present shall elect a Chairman from among the members present who will preside over the same and conduct its business.




  1. Notice of not less than a month shall be given to members regarding the meetings. A tentative agenda shall also be circulated along with this notice. Extraordinary meetings can be convened at short notice, if necessary.




  1. The Agenda notes of the meeting shall be prepared by the Joint Secretary convening the meeting and circulated at least a fortnight in advance. The minutes of the meeting shall be drafted by the Joint Secretary convening the meeting and approved by the Chairman of the meeting before being circulated to all members.


Part III


  1. Work of the PTCC

The PTCC shall carry out the functions already outlined in Para 1. For carrying out these functions, the Committee may seek the assistance of the Engineering Branches of the P&T Department, the Engineering Departments of the Central and State Governments, State Electricity Boards and other Scientific Organizations and Institutions in India like the IITs, IISc, Bangalore, Council of Scientific and Industrial Research, New Delhi, in carrying out field tests and experiments.




  1. Examination of line co-ordination cases




  1. Cases referred to the PTCC shall be got examined by the Joint Secretary (Power) as outlines at 9 above [after getting such data as necessary from the Joint Secretary (Telecom) and State Electricity Boards etc] and he shall communicate the results of his examination together with suggestions regarding any protective measures necessary to the Joint Secretary (Telecom). The Joint Secretary (Telecom) shall then issue the approval after considering these results. The details of Railway owned alignments shall be communicated to the Joint Secretary (Telecom) by GM (S&T) concerned.




  1. A list of cases approved as in (i) above shall be put up for information at the earliest meeting following.




  1. If specific cases warrant the advice of the PTCC, the details of such cases shall be put up to the PTCC for suitable decision, by circulation, if necessary.




  1. Where considered necessary, the Joint Secretary (Power) or (Telecom) shall arrange for necessary field experiments to be conducted, after getting the proposal approved by the Chairman or in his absence, the Vice-Chairman.




  1. In the interest of expeditious disposal of cases, the PTCC may delegate its functions, in respect of cases up to a specific level to State Level Co-ordination Committee.




  1. The procedure for incurring expenditure relating to the PTCC shall be in accordance with the directives issued from time to time by the Government of India (The existing directives are reproduced as Annexure A).




  1. The budget for PTCC for each year shall be subject to approval at the meeting.




  1. An Annual Report of the work of the PTCC may be prepared and put up to Government of India every year.


Annexure A


  1. Copy of letter No. EL.II-151 (26) dated the 18th January 1954 from Shri K.L. Saxena, Under Secretary to the Government of India, Ministry of I&P, New Delhi to the Chairman, Central Water and Power Commission (Power Wing), New Delhi.


Subject: Sanction for incurring expenditure on Power and

Telecommunication Co-ordination Committee work.

Sir,
I am directed to convey the sanction of the President to the acceptance by the Central Water & Power Commission (Power Wing) of the debit raised by the Deputy Accountant General, Posts and Telegraphs for an amount equal to 50% of the actual expenditure incurred by the Power and Telecommunication Co-ordination Committee during the year 1954-55. The expenditure will be adjusted against the head ‘47 – Miscellaneous Departments, A.2 CW&PC (PW). A.2 (4)-Other Charges’.


The Sanction of the President is also accorded to the acceptance by the Commission of similar debits for one half of the actual expenditure incurred by the Power & Telecommunication Co-ordination Committee during 1955-56 and to be incurred in future years.
The above sanction is subject to the condition that the expenditure would not exceed the budget provision in any year of account.



  1. Copy of letter no. EL-387 (1) dated the 28th June 1956 from the Under Secretary to the Government of India, Ministry of I&P, New Delhi to the Joint Secretary (Power), PTCC, CWPC (PW), New Delhi.


Subject: Delegation of enhanced financial powers to the Chairman, Power & Telecommunication Co-ordination Committee.
Sir,
I am directed to convey the sanction of the President to the delegation of the following financial powers for incurring expenditure within the budget provision, to the Chairman of the Power and Telecommunication Co-ordination Committee.


  1. Cash Expenditure

Up to the limit of Rs. 10,000/- (Ten thousand only) for any single item. For expenditure greater than the aforesaid amount, the normal Posts and Telegraphs Departmental procedures for sanction for such expenditure should be followed.




  1. Expenditure under stores to the extent of the amount sanctioned in the budget.




  1. Salary of Staff employed carrying out experimental investigations in connection with the Power and Telecommunication Co-ordination Committee work subject to the following limitations.




  1. Staff for maximum period of one year, each individual drawing a total salary of not more than Rs.300/- per mensem, and




  1. The salary paid to any individual shall not exceed that admissible to a Government servant of equivalent rank.



  1. Copy of letter No.III-387 (8) dated the 9th June 1952 from Shri G.D. Kshetrapal, IAS, Deputy Secretary of the Government of India, Ministry of Irrigation & Power, New Delhi to Chairman, CWPC (PW), New Delhi.

Subject: Procedure for incurring expenditure relating to the Power and

Telecommunication Co-ordination Committee.
Sir,
I am directed to say that the President has been pleased to decided that from the year 1958-59 the actual estimated expenditure approved by the Power & Telecommunication Co-ordination Committee will be provided in the Budget of the Central Water and Power Commission under a separate sub-head, and the Power and Telecommunication Co-ordination Committee will be debited to the Posts and Telegraphs Department through the Accountant General, Central Revenues.
2. It will also be necessary for the Additional Chief Engineer, Jabalpur (Posts and Telegraphs Department) to incur certain small items of expenditure such as printing of stationery, railway freight for transporting apparatus for purposes of field tests etc. any such items of expenditure incurred in the Posts and Telegraphs Department may be transferred monthly to the Accountant General, Central Revenues, Nagpur for debit against Central Water and Power Commission. As far as possible, no expenditure need be incurred by the Posts and Telegraphs Department towards the end of the year, so that the clearance of the remittance items with Accountant General, Central Revenues in March Preliminary Account itself may be facilitated, leaving sufficient time for the re-debit of 50% of the expenditure to the Posts and Telegraphs Department in the March Final or Supplementary Accounts. The Additional Chief Engineer (Posts and Telegraphs), Jabalpur will also intimate to the Central Water and Power Commission to the particulars of expenditure as and when incurred in advance of the usual monthly debits referred to above. He will also furnish to the Central Water and Power Commission an estimate of the expenditure to be incurred annually for inclusion in the budget of the Central Water and Power Commission by the date specified by the latter.

Appendix IV to Chapter 1

(Refer Para 4.1)
Notification for re-organization of Central PTCC

(To be published in the Gazette of India, Part–I, Section–I)



Government of India

Ministry of Power
No.3/1/2001-Trans New Delhi, the 11th April 2001
Resolution

In partial modification of the Ministry of Power’s Resolution No.7/5/82 – Trans dated 9th August 1982, it has been resolved to reconstitute the Central Standing Committee of Co-ordination of Power and Telecommunication Co-ordination Committee as detailed below:


Composition of the Committee



1.

Chief Engineer (LD & T),

Central Electricity Authority,New Delhi



Chairman

In Alternate

Years


2.

Chief General Manager, T&D Circle

Bharat Sanchar Nigam Ltd (BSNL)

Jabalpur


3.

Director (PTCC),

Central Electricity Authority,New Delhi


Secretary (Power)



4.

Deputy General Manger, T&D Circle

BSNL, Jabalpur



Secretary (Telecom)

5.

Director (Telecom), Railway Board

New Delhi


Member


6.

Jt. DDG (ML), Ministry of Communication

Member


7.

Chairman/ Co-Chairman of SLPTCC

Member

8.

Director (GP), Ministry of Communication

Member

9.

Representative of Dept. of Power

Member

10.

A representative from the Army Headquarters

Member

11.

DDG(NE), TEC, BSNL, Hyderabad

Member

12.

DET (PTCC), T&D Circle, BSNL

Member




  1. The Headquarters of the Committee shall be at Delhi and the TEC, Department of Telecom will provide Secretariat assistance.




  1. Functions of the Committee

The Committee shall:




  1. Study the existing rules and regulations issued on the subject by competent authorities and suggest modifications, if any, are called for in the light of present day researches and developments and international practices.




  1. Initiate and undertake scientific and field studies associated with the problem of co-ordination.

  2. Examine and study all individual co-ordination cases and recommend measures to be undertaken.


4. For carrying out the above functions, the Committee may seek the assistance of the Engineering Branches of the Bharat Sanchar Nigam Ltd. (BSNL), the Engineering Departments of the Central and State Governments and other Scientific Organizations in India, such as the Indian Institute of Science, Bangalore and Council of Scientific and Industrial Research, New Delhi in carrying out various filed studies and experiments.
5. In order that field tests and investigations may be carried out by various scientific bodies and the Bharat Sanchar Nigam Ltd (BSNL)on behalf of the Committee, it is recommended that the Central and State Governments, whose co-ordination problems are to be considered, should continue to provide in their budgets necessary lump sum grants for the purpose.

Sd/-


(J. Vasudevan)

Additional Secretary to the Government of India


O R D E R
Ordered that this Resolution be communicated to all State Governments, National Thermal Power Corporation, National Hydro Electric Power Corporation, the PGCIL, the Central Electricity Authority, all Regional Electricity Boards, all the Ministries of the Government of India, The Prime Minister’s Office, the Secretary to the President, the Planning Commission and the Comptroller and Auditor General of India
Ordered also that the Resolution be published in the Gazette of India.
Sd/-

(P.I.Suvrathan)

Joint Secretary to the Government of India

The Manager,

Government of India Press,

Faridabad

Copy to:
1. PS to Minister of Power/ PS to Minister of State for Power/PS to Secretary(P)/ PS to SS(P) / PS to AS(P) / JS(FA) / JS(H) / JS(Th & A) / JS(IPC) / JS(PP&EA) / US(Coord), Ministry of Power.

2 The Chairman, Central Electricity Authority, New Delhi (10 Copies)



  1. The Member (PS), Central Electricity Authority, New Delhi.

  2. The Chief Engineer, LD & T Division, Central Electricity Authority, New Delhi

  3. The CMD, NTPC, Scope Complex New Delhi.

  4. The CMD, NHPC, Faridabad.

  5. The CMD, POWERGRID, New Delhi.

  6. The Member Secretary, WREB, Plot No. F-3, MIDC Area, Marol, Andheri (E),

Mumbai – 4000093.

  1. The Member Secretary, NREB, Katwaria Sarai, New Delhi.

  2. The Member Secretary, NEREB, Nogrimbah Road, Laitumkhrah, Shillong – 703003.

  3. The Member Secretary, SREB, No. 29, Race Course Cross Road, Bangalore – 560029.

  4. The Member Secretary, EREB, 14 Golf Club Road, Tollygunge, Calcutta

Sd/-


(Mrs. Renu Sarin)

Desk Officer (Trans)



Appendix V to Chapter 1

(Refer Para 6.1.7)
Record of Discussions of the Sub-Committee to Examine the Conversion of Earth Return Telegraph Circuits to Metallic Return
A meeting of the above sub-committee was held on 25th January 1979 and the following were present:


  1. Shri A.K. Das, Joint Director, Telecom (G), Railway Board, Rail Bhavan,

New Delhi.


  1. Shri S.C. Buch, Ex-Engineer (PLCC), Gujarat Electricity Board, Old Padra Road, Vidyut Nagar, Baroda.




  1. Shri C.S. Nehete, Ex-Engineer (PTCC), MSEB, Dr. Ambedkar Road, Mumbai.




  1. Shri N.C. Gupta, Director (Maintenance), Northern Telecom Region, Kidwari Bhavan, New Delhi.




  1. Shri N.V. Krishnaswami, Deputy Director (PTCC), CEA, New Delhi.

Shri Arvind, ADG, DGP&T joined the discussions later.

1. The members of the Sub-Committee expressed the view that its report should be based on CCITT Recommendations which are:


  1. For open-wire single wire earth return telegraph circuits – 430V for ordinary and 650V for high security power lines against danger during SLG fault condition on the power line.




  1. Interference is caused to the operation of the system (telegraph) when the r.m.s. value of the current from the external sources due to electrostatic or electromagnetic induction passing through one of the receivers exceeds 1/10th of the telegraph current flowing under steady state conditions of the power line.

2. The tripping times for different voltage categories of power lines indicated by the Power side representatives are as follows:


11 KV, 22 KV, 33 KV, 66 KV, 110 / 132 KV : 0.20 to 0.50 Seconds

220 KV, 400 KV : 0.10 to 0.15 Seconds

3. The details of the telegraph instruments used by P&T and Railways in India as per information furnished by Railways and P&T are as follows:


Type of Instrument

DC Resistance of Coils

Working Current

(i) Dubern

Sounder


2 coils each of 250 ohms Normally both the coils are connected in series but in case of fault one coil is also used.

12 to 15 mA

(ii) BPO

Polarized

Sounder


2 coils each of 250 ohms Both connected in series.

12 to 15 mA

(iii) BPO Relay

2 coils each of 100 ohms The coils are wound differentially.

5 mA

(iv) Teleprinter

2 coils each of 240 ohms.

  1. 35 to 45 mA under

single current working

  1. 20 to 35 mA with

double current working


N.B.:

(a) The duration of one pulse is in the range of 13.3 to 20 ms. for teleprinter

telegraph circuit depending upon speed of operation.

(b) The width of the signal element for the instrument at (i), (ii) & (iii)

depends upon the speed of operation of the signaller.

4. The induction during SLG fault condition may constitute hazards to the personnel as well as equipment. The clearance time for such faults on the different categories of power lines have been indicated in Para 2. During the time the fault persists on the power line, induction on the telegraph line would continue. Apart from this, the working of the telegraph circuit will also be disrupted in case the induced current in the circuit exceeds 1/10th of the normal operating current of the telegraph instruments during such faults. Under this condition, the following are the likely effects:




  1. Hazards to the personnel.

  2. Hazards to the equipment.

Against hazards to the personnel and equipment the normal protective devices as applicable to the other affected telecom lines may suffice.


The P&T and Railway representatives stated that the telegraph circuit would not be available during the pendency of the fault on the power line in case the induced current in the circuit exceeds 1/10th of the normal operating current of the telegraph instrument. On a specific query from Shri S.C. Buch, it was indicated by the P&T and Railway representatives that in case of circuit having metallic return and arresters subjected to induction more than spark-over voltage of the arresters, the circuit will be lost during the pendency and the fault when the current through the telegraph circuit exceeds 1/10th of the telegraph current.
5. Interference
Due to their asymmetric nature, the earth return telegraph circuits are more susceptible to interference. As per CCITT, interference is caused to the operation of the system (telegraph) when the r.m.s. value of the current from the external sources due to electrostatic or electromagnetic induction passing through one of the receivers exceeds 1/10th of the telegraph current flowing under steady state condition of the power line. For consideration of this aspect, induction (electrostatic and/or electromagnetic) during normal operation of the power line will have to be computed. In case the induced current exceeds 1/10th telegraph current as indicated above, the following protective measures may have to be taken:


  1. Conversion of earth return, to metallic return symmetrical circuit.




  1. In case, conversion of earth return to metallic return on overhead lines does not bring down the level of induced current to less than the prescribed limit, other methods such as use of shielded cables, change of route etc may have to be considered.


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