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State of Madhya Pradesh - Section

Section 11 in Madhya Pradesh Electricity Grid Code (Revision-II), 2019

11. Section 11

Outage Planning
11.1Introduction. - (a) This section describes the process by which STU carries out the planning of State Transmission System Outages, including interface co-ordination with Users.
(b)The generation output and transmission system should be adequate after taking into account the outages to achieve the security standard.
(c)Annual outage plan shall be prepared in advance for the financial year by the SLDC in consultation with STU and Discoms and reviewed during the year on Bi-Monthly basis. All, Users, STU etc shall follow these annual outage plans. If any deviation is required the same shall be with prior permission of SLDC. The outage planning of run-of-the river hydro plant, wind and solar power plant and its associated evacuation network shall be planned to extract maximum power from these renewable sources of energy. Outage of wind generator should be planned during lean wind season, outage of solar, if required during the rainy season and outage of run-of-the river hydro power plant in the lean water season.
11.2Objective. - The objective of this section is to define the process, which will allow STU to optimise transmission Outages with SSGS (other than CPP), IPPs and Discoms' Outages while maintaining system security to the extent possible.
11.3Outage Planning Process. - Each User shall provide their operational planning data including outage programme as per APPENDIX 'C' for ensuing financial year to the SLDC for preparing an overall outage plan for State Transmission System as a whole. SLDC shall be responsible for analyzing the outage schedules of the SSGS, IPPs, Discoms and STU schedule for outage of Transmission network and preparing a draft annual outage Plan for State Transmission System in coordination with the Outage Plan prepared for the region by the WRPC.However, SLDC is authorised to defer the planned outage in case of any of the following events:
(a)Major grid disturbance
(b)System Isolation
(c)Black out in the State
(d)Any other event in the system that may have an adverse impact on system security by the proposed outage
Each User shall obtain approval of SLDC, prior to availing the Outage. SLDC while releasing any circuit for outage shall issue specific code. Similarly, no inter user boundary circuits shall be connected back to the State Transmission System without specific code/approval by SLDC. This restriction shall however not be applicable to individual Generating Unit(s) of a CPP.In case of emergency in the system, viz., loss of generation, break down of transmission line affecting the system, grid disturbances, system isolation, SLDC may conduct studies again before clearance of the planned outage
11.4Annual Outage Planning
11.4.1Scheduled outage of power stations will be subject to annual planning.
11.4.2Provided that scheduled outage of power station and EHV lines as notified by WRPC, will also be subject to annual planning by WRPC in co-ordination with SLDC.
11.4.3SSGS and !PP connected to State Grid shall furnish their proposed Outage programme for the next financial year in writing by 15th November of each year.
11.4.4SSGS and IPPs Outage programme shall contain details like identification of unit, reason for outage, generation availability affected due to such outage, outage start date and duration of outage. SLDC will review the outage programme received from SSGS and IPPs on bimonthly basis in OCCM to chalk out the outage of state transmission system.
11.4.5SLDC shall also obtain from STU, the proposed outage programme for transmission lines, equipments and sub-stations etc. for next financial year by 15th November each year. STU outage programs shall contain identification of lines/substations, reason for outage, outage start date and duration of outage.
11.4.6Scheduled outage of 400 KV transmission elements and 220 KV/132 KV interstate lines shall be affected only with the approval of WRPC in coordination with SLDC. Scheduled outage of power stations and other transmission elements shall be approved by the SLDC, 24 hours in advance based on prevalent operating conditions.
11.4.7The above annual outage plan shall be reviewed by SLDC on Bi-monthly basis in OCCM of MP in coordination with all parties concerned, and adjustments made wherever found to be necessary.
11.4.8Load Generation Balance Report (LGBR) and the annual outage plan for the following financial year should be finalised by 31st December of each year. The RPC Secretariat shall be primarily responsible for finalization of the Annual Load by 31st December of each year. All SSGS, Discoms, IPPs, transmission licensee and other generating stations shall provide information to SLDC.and SLDC shall submit LGBR for its control area to the WRPC Secretariat in writing for the next financial year by 31st October of each year. These shall contain identification of each generating unit/transmission line/ICT etc., the preferred date for each outage and its duration and where there is flexibility, the earliest start date and latest finishing date. The annual plans for managing deficits/surpluses in respective control areas shall clearly be indicated in the LGBR submitted by SLDCs.
11.5Availing of shutdowns schedule
11.5.1SLDC would review on daily basis the outage schedule for the next two days and in case of any contingency or conditions described in section 6.7.4(g) of the !EGG, defer any planned outage as deemed fit clearly stating the reasons thereof. The revised dates in such cases would be finalized in consultation with the User.
11.5.2Each User and STU shall obtain the final approval from SLDC prior to availing an outage.