The “Medium-Voltage Network Optimization in Malard” project was implemented in response to the growing infrastructure needs of the region’s power sector, with the objective of enhancing the reliability and quality of electricity supply.
In recent years, Malard County has experienced rapid expansion in residential, commercial, and service land uses, and the increasing number of electricity service applicants had placed the existing network under pressure, resulting in challenges such as voltage drops, reduced power quality, and capacity limitations. Under such circumstances, the implementation of a comprehensive project for the development of pole-mounted substations, construction of new medium-voltage networks, and rehabilitation of existing networks was defined as a technical and regional necessity.
The project was carried out for the Tehran Province Regional Electricity Distribution Company and executed by Pegah Energy Persian Company from April 21, 2013 to October 22, 2013, with a contract value of IRR 5,937,000,000. The infrastructure nature of this initiative positioned it as one of the key projects in enhancing the reliability of Malard’s power distribution network; a project that, through an engineering-based and systematically planned approach, strengthened network capacity and provided the necessary foundation for meeting future regional demands.
1. Strategic Objectives of Medium-Voltage Network Optimization in Malard
Prior to the implementation of this project, the medium-voltage network in certain areas of Malard County was facing voltage weakness, increased technical losses, and limitations in responding to new connection requests. Population growth, expansion of residential complexes, and increased load demand in service and industrial sectors had imposed additional stress on the existing infrastructure. In such conditions, continued operation of the network without structural reinforcement and reconfiguration could have led to increased outages, reduced power quality, and customer dissatisfaction.
The strategic objective of this project was to enhance the stability and reliability of the medium-voltage network through the development of new infrastructure and the rehabilitation of aged or inefficient sections. The construction of new pole-mounted substations with appropriate capacity enabled more balanced load distribution and reduced voltage drops at feeder endpoints. Furthermore, the expansion of overhead and underground medium-voltage networks provided the necessary infrastructure for reliable supply to new consumers.
From a technical perspective, the project was designed with a focus on reducing energy losses, improving voltage profiles, and increasing network flexibility under both normal and emergency operating conditions. Pegah Energy Persian Company, through analysis of the existing network conditions and identification of critical points, planned the project implementation in a manner that addressed current deficiencies while also considering the capacity required for future regional development. This approach transformed the project from a short-term corrective action into a targeted infrastructure intervention.
2. Project Execution Scope: From Engineering Design to Operational Commissioning
The project scope included engineering design, procurement of equipment, construction of pole-mounted substations, implementation of overhead and underground medium-voltage networks, and rehabilitation and optimization of existing networks across various locations in Malard County. During the design phase, technical studies were conducted, including load assessment, voltage drop analysis, determination of optimal routing for lines, and selection of appropriate transformer capacities. These studies formed the basis for decision-making regarding substation siting and technical specifications of equipment.
In the execution phase, activities included installation of poles, construction of medium-voltage overhead lines, underground cable laying where required, and installation of protective and control equipment. Existing networks suffering from deterioration or incompatibility with increased load demand were rehabilitated and optimized. These improvements involved conductor replacement, enhancement of connections, upgrading protective devices, and partial feeder reconfiguration.
Although the project was defined under an execution contract, Pegah Energy Persian Company adopted an integrated management approach covering engineering, procurement, and construction phases. Close coordination between design and execution teams reduced rework, improved cost control, and accelerated physical progress. Upon completion of installation activities, technical testing and final inspections were conducted, and the newly constructed networks were energized after verification of compliance with technical specifications.
3. Technical Standards, Quality Control, and Supervisory Requirements
The implementation of the medium-voltage network development and optimization project required strict compliance with the technical standards of Tavanir and the guidelines issued by the Tehran Province Electricity Distribution Company. All equipment used, including transformers, insulators, conductors, cables, and protective devices, was selected and procured in accordance with approved technical specifications. During execution, requirements related to safety clearances, standard line configurations, and proper equipment connections were fully observed.
The project quality control system was based on phased inspections and systematic documentation of technical activities. At each stage of execution—including pole installation, stringing, cable laying, and installation of pole-mounted substations—quality controls were carried out by technical supervisors, and the results were recorded in formal reports. Pre-commissioning tests included cable insulation testing, verification of connections, validation of protective device performance, and measurement of voltage and current parameters.
From a supervisory perspective, continuous interaction with the client and submission of physical and financial progress reports constituted an integral part of project management. Pegah Energy Persian Company, through the establishment of internal monitoring mechanisms and close cooperation with the supervising authority, ensured that all activities were executed within the framework of technical requirements, safety regulations, and operational standards.
4. Human Resources, Construction Equipment, and HSE Management System
Execution of the project within the specified limited timeframe required precise organization of specialized human resources and proper mobilization of construction facilities. The project team consisted of electrical engineers, site supervisors, technical technicians, and trained field personnel, each operating according to defined responsibilities throughout the execution process. Coordination between the engineering unit and field teams played a significant role in maintaining orderly progress of operations.
For the construction of overhead and underground medium-voltage lines, specialized machinery and equipment were utilized, including cranes, drilling machines, cable installation equipment, and standard installation tools. The use of appropriate equipment increased execution speed, enhanced operational quality, and reduced the risk of construction errors.
The Health, Safety, and Environment (HSE) management system was implemented throughout all project stages. Prior to the commencement of each activity, risk assessments were conducted and necessary control measures were defined. The use of personal protective equipment (PPE), adherence to safe clearances from energized lines, and continuous safety training were mandatory requirements. Pegah Energy Persian Company, by emphasizing safety culture, ensured that project execution was carried out in a safe environment aligned with professional standards.
5. Financial Management, Planning, and Project Organizational Structure
The project was executed with a contract value of IRR 5,937,000,000, financed by the Tehran Province Regional Electricity Distribution Company. Financial resource management included planning for equipment procurement costs, workforce wages, transportation, and machinery expenses within a structured cost control system. Continuous monitoring of expenditures and alignment with physical progress enabled effective control of potential deviations.
The project organizational structure comprised project management, technical and engineering units, procurement department, and field execution teams. The project manager was responsible for overall coordination, activity scheduling, and communication with the client. The technical unit supervised compliance of design and execution with technical specifications, while field teams were responsible for carrying out on-site operations.
Given the contractual time constraints, precise scheduling and logical overlapping of certain execution phases played a key role in completing the project within the specified deadline. Pegah Energy Persian Company, leveraging its experience in similar projects, established an efficient framework for controlling time, cost, and quality.
6. Execution Challenges and Management Solutions
Project implementation across Malard County encountered challenges such as restricted access in certain streets, dense urban construction, and the necessity of coordination with other urban utilities. In some locations, underground network construction required excavation in high-traffic areas, which demanded careful planning and coordination with municipal authorities.
From a technical standpoint, maintaining the stability of the existing network during rehabilitation and optimization activities was a primary challenge. Planned temporary outages were scheduled in a manner that minimized disruption to consumers. Simultaneous management of multiple work fronts across different parts of the county also required continuous coordination and strict supervision.
To address these challenges, Pegah Energy Persian Company implemented phased scheduling, held regular coordination meetings, and established a daily reporting system to maintain strict control over project progress. This managerial approach ensured project completion within the defined time and budget despite operational constraints.
7. Execution Results and Infrastructure Impacts
With the commissioning of the new pole-mounted substations and constructed networks, voltage weakness in targeted areas was significantly reduced, and reliable electricity supply for new applicants was ensured. Rehabilitation and optimization of existing medium-voltage networks also led to reduced technical losses, increased reliability, and improved power quality across Malard County.
From an infrastructure perspective, the project enhanced network capacity to accommodate future developments and strengthened its flexibility in handling increased load demand. Improved network configuration and upgraded protective equipment reduced the risk of widespread outages.
For the client, the project’s added value can be assessed in terms of enhanced network stability, reduced costs associated with repeated failures, and improved customer satisfaction. Through precise execution and adherence to technical standards, Pegah Energy Persian Company played an effective role in upgrading the electrical infrastructure of Malard County.
This project stands as a successful milestone within the comprehensive portfolio of [Electricity and energy Projects] executed by Pegah Energy Persian Company.
8. Conclusion
The Development, Construction, and Optimization of the Overhead and Underground Medium-Voltage Network of Malard County represents a successful implementation of an infrastructure project in the field of urban power distribution. The project was carried out with the objective of resolving operational deficiencies and creating sustainable capacity for future regional development. It demonstrated that through precise engineering planning, coherent resource management, and execution in compliance with technical standards, the quality and reliability of distribution networks can be effectively enhanced.
In this project, Pegah Energy Persian Company, relying on its technical expertise, execution experience, and systematic management approach, fulfilled the client’s requirements within the approved timeframe and budget. The achievements of this project reflect the company’s capability in executing power infrastructure development and optimization projects and professionally managing regional-scale energy distribution initiatives.
