Why Substation Maintenance Companies are so Important


Regular maintenance of the substation equipment is essential for the organizations that depend on the substations for the smooth running of their operations. Let us learn why having the contacts of the substation maintenance companies on your speed dial is important!


Most organizations tend to operate with the support of a substation. The organization needs to ensure regular maintenance of the substations as many challenges can affect the substations' operations, causing a delay in the delivery of services to the consumers. Faulty substations can affect an organization's operations and how the consumers get their power in a specific region. When the substation equipment is faulty, its performance and reliability tend to be affected, and they can be dangerous to the people who are using them. Therefore, it is essential for the organizations that use substations to identify reliable substation maintenance companies that they can always call for maintenance of their equipment. If you do not understand the importance of having regular substation maintenance, read through this article and get a glimpse of what it means to have substation equipment maintenance and the role that the substation maintenance companies play during the maintenance.

What is a Substation?

A substation is a high voltage capacity electrical system used to control electrical circuits, generators, and other equipment. A substation is used to change the voltage from high to low, and you can also use it to generate, transmit and distribute electrical voltage. Substation use can help reduce the high voltage of electrical power transmitted to make it suitable for the customer's use. In the substation, different equipment is used to help in the transmission and generation of electrical power. There are transformers used to change the voltage levels in the substation and circuit breakers used to protect the electrical circuit from any damage caused by overloads of power in the substation. Most of the time, the substations are remotely managed and controlled, as there is a lot of power transmission. Substation maintenance companies can be owned and managed by an electrical utility or a commercial customer.

Types of Substations

There are different types of substations. They are classified depending on their voltage levels, applications within the power system, the types of insulations used in the connections, and the materials and styles used to structure them. They include:

1. Distribution Substation

These substations transmit power from the transmission system to the distribution system within an area. They are mainly placed in areas with an extensive network of consumers who need a high distribution of voltages. A distribution substation helps to save on the direct connectivity of the consumer to the leading transmission equipment, as they reduce the power voltage to a distribution level that can be used by the consumer, especially those who do not use a tremendous amount of power. The distribution substations transmit medium voltages that range from 2.4kV and 33kV depending on the number of consumers within a specific region.


The substations also isolate any faults detected in the transmission or distribution systems that might affect how consumers get their power. The distribution substations have been created to have a transformer and a switch that you can use to regulate the high voltage to ensure they are at the best levels for the consumers. There are many pieces of substation equipment placed in the distribution substation to help effectively supply power to many consumers that depend on the distribution substations.

2. Underground Distribution Substation

These types of substations are installed underground to help reduce the space problems in the urban areas. They are used to supply high voltage electricity in the urban areas without any interruption and usage of huge spaces. The substations are environmentally friendly, and they help save on space as they are placed underground. They help protect the consumers from dangers brought about by substations placed in highly congested regions within the cities and provide surface-built solutions for power. They provide all the functionalities of a substation and help save on the space used in the different areas where the substation is installed. Underground distribution substations are considered more effective, especially when placed in highly populated regions, as they effectively meet the needs of the consumers and still utilize as little space as possible during the installation.

3. Step-Up Transmission Substation

The step-up transmission substation uses the power supply from a nearby company producing power. It mainly uses big power transformers to enhance the voltage level needed to be transmitted to remote locations around the substation. The transmission bus is also used to distribute the electric power from the substation to other transmission lines. The step-up substation is also used to get incoming power from a distributor, where it is going to be received in a generation plant, and later, power is supplied to the consumers.

4. Step-Down Transmission Substation

These types of substations are located in different locations in an electrical network. They tend to connect different parts of the network, and they act as the source of the sub-transmission and distribution lines of the power to the consumer. The step-down transmission is used to change transmission voltage to sub-transmission, which is the best form that can be supplied to the consumers in the regions near the substations.

5. System Substation

These substations are used to transfer a huge amount of power to the network of consumers in a specific region. The substations are used to provide switching facilities as they do not use the power transformers. Also, they are essential for performing voltage conversion to make it more consumer-friendly. The system substations tend to be very expensive to construct and maintain. They are very large and provide different electrical circuits that feed the transforms with the necessary voltage easily transferred to the customer.

6. Customer Substation

These substations tend to supply electric power to one customer. They can be used for large organizations that use very high electrical voltages. These substations are built near the organizations that need them to ensure that they are the only consumers using them to help reduce the chances of any overload on the equipment. They are built depending on the consumer's requirements, where they look to meet the consumer's electrical power needs.

Elements of a Substation

A good substation has different components that help it in its functionalities. They will contain:

  • Surge protection

  • Earth or grounding system

  • High voltage switchgear

  • Circuit breaker

  • Disconnecting switch

  • Transformer to measure the electric voltage

  • Primary power lines

  • Overhead wires

  • Ground wires

  • Insulators and conductors

  • Fuses

Different Roles of a Substation

  1. The main role of substations is to reduce the high electricity voltage from the transmitting system and ensure that it gets to a lower level that the consumers can use without causing them any harm. The substations also ensure that the lower voltage electricity is distributed to the consumers through the distribution lines.

  2. Substations are also used to control equipment that generates and distributes electricity, circuit breakers, and transformers in different regions.

  3. The substations that serve high-level consumers who use more electricity tend to have circuit breakers used to regulate any overload that may occur on the network during the supply of power to the consumers.

Importance of Substation Maintenance

  1. Substation equipment maintenance is essential as it gives the substation the efficiency it needs to regulate the electricity flow. You should ensure to conduct regular maintenance on substation equipment so that they can provide your organization with efficient long-term performance and guarantee you quality service delivery to your consumers, as it helps to increase the lifespan of the substation equipment.

  2. Regular maintenance services on the substation equipment prevent any future challenges that could arise with the use of the substations. Therefore, it is essential to contact the best substation maintenance companies who will offer you the best services on your expensive equipment.

  3. The substation maintenance companies ensure that the equipment is safe and working well, giving you excellent performance. You can deliver the much-needed services to your consumers without any struggles. Substation maintenance ensures that the old types of equipment are working in perfect condition. Those that you cannot maintain are repaired or replaced to help continue the substation services.

  4. The maintenance of the substation equipment brings about workplace safety. Old and Faulty transformers pose a danger to the substation workers when they try to fix them. Maintenance makes replacing the faulty and old circuit breakers and transformers easy to ensure that the employees are working safely.

  5. It also helps to lower the costs of purchasing new types of equipment. A substation technician can identify issues affecting the different equipment early enough, and they will be able to sort the problem instead of waiting for the equipment to break down.

What Goes into Substation Maintenance?

The substation maintenance involves inspecting, repairing, and replacing the different parts of the substation equipment that might not be functioning well. The maintenance is a routine check offered by the expert substation maintenance companies to ensure that all the substation equipment is in good condition and working without any challenges. The whole maintenance process involves a physical checkup of the equipment, which is done in parts depending on the type of the substations and the types of equipment involved. The substation equipment maintenance is categorized into different phases, including primary and secondary testing.


The primary testing involves checking the circuit breakers and the transformers, which are the essential elements in a substation. The elements tend to be damaged with their regular use, and therefore they need regular maintenance to prevent any breakdown of the pieces of equipment. Different parameters are checked to ensure that the circuit breakers function well during the maintenance, which involves the opening and closing time, coil condition, poles synchronism, and contact resistance. The transformers are checked if they are experiencing any form of stress to ensure they are working well as they play an essential role in the substations.


The secondary test is made before the primary test, ensuring that the protection schemes used work perfectly; the main areas in which the secondary testing is done include the overcurrent testing, frequency testing, and voltage protection.

Importance of Substation Maintenance Companies

The substation maintenance companies play an important role in ensuring that the equipment is working well. They ensure to send their technicians to visit the substation, and they physically inspect them, as they pinpoint the different areas that need to be maintained or repaired when they are faulty.


The substation maintenance companies ensure there is no guesswork on what could affect the different equipment and promote preventive measures to help take care of the equipment. The companies offer the substation management different ideas on how they can maintain their equipment and when it is time to repair or replace the equipment. This helps prevent the usage of old and damaged substation equipment that can be dangerous to use.


The substantial maintenance companies help the substations to be able to understand their energy needs and how their equipment is doing to meet their needs. They can also advise them on when to upgrade the equipment.

Different Duties of Substation Maintenance Companies

  1. Substation maintenance companies have the duties of installing, maintaining, troubleshooting, and repairing different types of high voltage equipment found in the power operations center. The equipment includes the transformers, circuit breakers, switchgear, and all the control equipment installed and used in the substations.

  2. Most substation maintenance companies have trained technicians who can install the control panel and the wiring systems to help in the normal functioning of the equipment. They can also do the equipment's required maintenance and any emergency repairs needed to ensure that electrical substations are functioning well, especially in sending power to the consumers who need it.

  3. The companies can also work with the architect during the design, construction, and installation of the substation. They can offer the services of troubleshooting the installed equipment and maintaining the devices.

  4. The substation maintenance companies can also offer monitoring safety services in the substations that faulty circuits or broken transformers may bring about.

Get Substation Maintenance Today!

You do not have to wait for your substation equipment to break down or undergo corrosion to get substation maintenance companies to take care of them. Having the substation equipment get regular maintenance helps you prolong their lives, making them serve you better. Using the best substation maintenance companies ensures that your equipment gives you exceptional performance in their production, which can cause an increase in the revenue brought about by the equipment. Contact us to talk about getting your substation equipment properly maintained, as we are among the best substation maintenance companies.


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