Bhutan Power System Overview

National Coincidental Peak Load = 492.25 MW (1-Jan-2022, 18:00 hrs)

1. Yesterday’s data (19-May-2022, 19:00 hrs)

(a) Total Generation = 827.30 MW

(b) Total Domestic Load = 365.38 MW

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2. Today’s data (20-May-2022, 09:00 hrs)

(a) Total Generation = 881.39 MW

(b) Total Domestic Load = 354.52 MW

Useful link

Bhutan Electricity Authority: http://www.bea.gov.bt/

Home

Useful link

Bhutan Electricity Authority: http://www.bea.gov.bt/

Druk Green Power Corporation Limited: https://www.drukgreen.bt/

Dagachhu Hydro Power Corporation Limited: http://www.dagachhu.com/

Bhutan Power Corporation Limited: http://www.bpc.bt/

DHPS, MoEA, Bhutan: http://moea.gov.bt/

NLDC, India: https://posoco.in/

ERLDC, India: https://erldc.in/

ERPC, India: http://erpc.gov.in/

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Background

BACKGROUND

Established in accordance with the Economic Development Policy of the Kingdom of Bhutan 2010, Bhutan Power System Operator, BPSO is entrusted to coordinate and regulate power system operation and outages and manage/monitor export and import of power in an optimal manner for overall reliability and security of electricity supply system of the nation.

Initially known as the National Load Dispatch Center(NLDC), BPSO was inaugurated by Hon’ble Lyonpo Yeshi Zimba on 17^th December 2011, coinciding with the National Day of Bhutan and licensed by Bhutan Electricity Authority(BEA) on 1^st July 2014, coinciding with the Bhutan Power Corporation(BPC) Day for the operation of Bhutan power system as the Power System Operator.

BPSO as of now has the main control centre(MCC) at Thimphu and the backup CC at Malbase (also known as the Western Load Dispatch Centre, WLDC), Phuentsholing. Eastern Load Dispatch Centre(ELDC) is based in Tintibi. Power System Network in Bhutan is divided into two regions: Eastern Region and Western Region.

Roles and Responsibilities

ROLES AND RESPONSIBILITIES OF EACH DIVISION

A. Power System Operation Division (PSOD)

The Power System Operation Division is one of the divisions of the BPSO responsible for operating Bhutan Power System network as per the requirement of the grid code 2008.

PSOD consists of two divisions:

System Operator
System Analyst

While system operators perform work in 24 hours shift duty supervising the power system pertaining to

Scheduling and dispatching
Transmission outage coordination
Monitoring import and export of electricity
Prepare forecasting etc,:

System analyst work on regular office timing doing all the study analysis.

B. Power System Planning Division(PSPD)

This division of Bhutan Power System Operator (BPSO) is responsible for the design and operation of the technical infrastructure of BPSO. It is established with the mission to make accurate data available at all of time at the control centre and it is the mandate of the department to ensure smooth and reliable operation of the entire BPSO system.

PSPD comprises of three units:

Core System Engineering Unit(CSEU)
SCADA & Telemetry Division(S&TU)
Communication Unit(CU)

These three units operate in synergy to provide maximum availability of network and efficient functioning of the system operation. It is the collective responsibility of all three units to make correct data available for Power System Operations Division (PSOD) at all instance of time.

Core System Engineering Division (CSEU)

The CSEU is responsible for designing, modifying and on-lining database and display of the system server. CSEU is also responsible for operation and maintenance of all the servers and other equipment at the control centre.

SCADA and Telemetry Division (S&TU)

S&TU looks after site works, specifically RTU-related works at the substations and the plants. They are responsible for operation and maintenance of the RTUs and the accessories associated with RTU, and the for implementation and adaptation of RTUs or any other advance Intelligent Electronic Devices (IEDs)

Communication Unit (CU)

Communication unit provides maximum of the communication network. The CU monitors and maintains the network remotely and from the site as and when required.