Hybrid capacitor bank

Abstract

The invention relates to the hybrid capacitor bank (A) developed to eliminate the disadvantages arising from the existing capacitor banks used in the "measurement of short circuit impedance and load losses" test, which is one of the routine tests of transformers.

Description

[0001] HYBRID CAPACITOR BANK

[0002] TECHNICAL FIELD

[0003] The invention relates to a hybrid capacitor bank developed to eliminate the disadvantages arising from the existing capacitor banks used in the "measurement of short circuit impedance and load losses" test, which is one of the routine tests of transformers.

[0004] PRIOR ART

[0005] In present arts, the capacitor banks used in “measuring short circuit impedance and load losses” tests of transformers are manually adjusted to form different connection combinations. This process is performed by manually removing and installing the separators and grounding switches by operators. However, this manual intervention brings with it several disadvantages.

[0006] First, manual implementations are time-consuming and cause switching between connection combinations to take a long time. The details that operators must pay attention to when making connection changes increase the risk of making mistakes. Incorrect connections may affect the accuracy of test results and may also cause damage to equipment.

[0007] Additionally, occupational health and safety risks arise in processes requiring manual intervention. There is a possibility that operators may be exposed to electric shock or other physical accidents during connection changes under power.

[0008] Constantly removing and installing the fasteners used in the present art causes deformation of the equipment and wear of the connection points. Metal fatigue occurring in elements such as bolts and busbars negatively affects the reliability and life of the system. Finally, the present art based on manual applications does not offer the possibility to perform connection changes quickly, which reduces the efficiency of the testing processes. All these problems indicate that present arts have significant shortcomings in both ease of use and reliability.

[0009] Considering the problems mentioned above, there is a need for a hybrid capacitor bank developed to eliminate the disadvantages arising from the existing capacitor banks used in the "measurement of short circuit impedance and load losses" test, which is one of the routine tests of transformers.

[0010] As a result, all the problems mentioned above have made it necessary to make an innovation in the relevant field.

[0011] OBJECT OF THE INVENTION

[0012] The present invention is put forward with the aim of eliminating the above-mentioned problems and making a technical innovation in the relevant field.

[0013] The object of the invention is to provide connection combinations safely and quickly in the "measurement of short circuit impedance and load losses" tests of transformers, without the need for manual intervention.

[0014] The object of the invention is to prevent operator errors and occupational health and safety risks that may occur during connection changes under power.

[0015] The object of the invention is to prevent deformation and equipment wear caused by constant disassembly and assembly of fasteners.

[0016] The object of the invention is to save time and labor in testing processes by minimizing the transition times between connection combinations.

[0017] The object of the invention is to ensure longevity and reliability of the system by protecting all components of the hybrid capacitor bank from environmental factors. BRIEF DESCRIPTION OF THE INVENTION

[0018] In order to achieve all the objects mentioned above and which will emerge from the detailed description below, the present invention is a hybrid capacitor bank.

[0019] The invention relates to the hybrid capacitor developed to eliminate the disadvantages arising from the existing capacitor banks used in the "measurement of short circuit impedance and load losses" test, which is one of the routine tests of transformers, characterized in that, it comprises 3 capacitors that provide the reactive power needed for the "measurement of short circuit impedance and load losses" test mentioned, the separator that enables the energy in the mentioned capacitors to be transferred to the busbar (transformer transmission line) or to be removed from the circuit, the first and second grounded separator, which ensures that the energy in the mentioned capacitors is transferred to the busbar and that their ends are safely grounded by short-circuiting when not transferred to the busbar, the cabin that is configured to safely house all components of the hybrid capacitor bank and protect them from external factors and increase operator safety, the separator arm connected to each separator to enable the first grounded separator and the second grounded separator to change the connection combinations of the hybrid capacitor bank, the drive arm that enables the said separator arms to be driven by the operator, the separator according to the position of the said drive arm, the first screen positioned on the cabin to visually show the operator that the first grounded separator and the second grounded separator are engaged, the separator according to the position of the said drive arm, the second display positioned on the cabin to visually show the operator that the first grounded separator and the second grounded separator are disabled.

[0020] A preferred embodiment of the invention is that it comprises a drive mechanism that enables the said drive arm to be moved without the need for operator power. BRIEF DESCRIPTION OF FIGURES

[0021] A representative isometric view of the hybrid capacitor bank is given in Figure 1 .

[0022] A representative isometric view of the hybrid capacitor bank from different angles is given in Figure 2.

[0023] DESCRIPTION OF REFERENCE NUMBERS IN FIGURES

[0024] A. Hybrid capacitor bank

[0025] 1. Capacitor

[0026] 2. Separator

[0027] 3. First grounded separator

[0028] 4. Second grounded separator

[0029] 5. Cabinet

[0030] 6. Separator arm

[0031] 7. Drive arm

[0032] 8. First screen

[0033] 9. Second screen

[0034] DETAILED DESCRIPTION OF THE INVENTION

[0035] In this detailed description, the hybrid capacitor bank (A) which is the subject of the invention, is described with examples that will not create any limiting effect, only for a better understanding of the subject.

[0036] The invention relates to the hybrid capacitor (A) developed to eliminate the disadvantages arising from the existing capacitor banks used in the "measurement of short circuit impedance and load losses" test, which is one of the routine tests of transformers.

[0037] Different connection combinations of the capacitor bank are required to perform the "measurement of short circuit impedance and load losses" tests applied on transformers accurately and efficiently. These combinations allow voltage and reactive power adjustments to be made according to the needs of the transformer during testing. These connection combinations are divided into five types: two parallel delta connections, delta-star connections, two parallel star connections, two series delta connections, and two series star connections. For the said combinations, combinations must be provided where the separator (2), the first grounded separator (3) and the second grounded separator (4) are engaged and disengaged. This process is carried out manually by the operator in the present art by removing and installing the separator (2), the first grounded separator (3) and the second grounded separator (4), and many disadvantages arise from manual application. The invention means that, thanks to its structure, different connection combinations can be provided without the need for manual intervention on the separator (2), the first grounded separator (3) and the second grounded separator (4). In this way, the transition between connection combinations is ensured in a minimum time without creating any occupational health and safety risks. This also prevents incorrect connections. Furthermore, the present art prevents deformation of the fasteners caused by the constant removal and installation of bolts and busbars.

[0038] The invention comprises three capacitors (1 ) as seen in figures 1 and 2. Capacitors (1 ) are one of the basic components of the invention and meet the reactive power required in the "measurement of short circuit impedance and load losses" tests, which is one of the routine tests of transformers.

[0039] The invention comprises a separator (2) that allows the energy in the said capacitors (1 ) to be transferred to the busbar (transformer transmission line) or to be deactivated, as seen in Figure 1 , and a first and second grounded separator (3,4) that allows the energy in the said capacitors (1 ) to be transferred to the busbar and to be safely grounded by short-circuiting their ends when not transferred to the busbar.

[0040] The invention comprises a cabinet (5) configured to safely store all components of the hybrid capacitor bank (A) and protect it from external factors and increase operator safety, as seen in Figures 1 and 2. The invention comprises a separator arm (6) connected to each of the separator (2), the first grounded separator (3) and the second grounded separator (4) to enable and disable them in order to create different connection combinations and to enable switching between them, as seen in Figure 2. It comprises a drive arm (7) that enables the said separator arms (6) to be driven by the operator. Preferably, the drive arm (7) is configured to be removable and attachable to the separator arms (6). In this way, all the separator arms (6) can be operated with a single drive arm (7). Preferably, there are three drive arms (7) in total, connected to each separator arm (6). In this way, intervention on the separator arms (6) is ensured in minimum time. The invention preferably comprises a drive mechanism that enables the said drive arm (7) to be moved without the need for operator power.

[0041] The invention comprises a first screen (8) positioned on the cabinet (5) to visually show the operator that the separator (2), the first grounded separator (3) and the second grounded separator (4) are engaged, depending on the position of the said drive arm (7), as seen in Figure 2. It comprises a second screen (9) positioned on the cabinet (5) to visually show the operator that the separator (2), the first grounded separator (3) and the second grounded separator (4) are disabled, depending on the position of the said drive arm (6).

[0042] The operator intervenes on the separator arms (6) to engage or disengage the separator (2), the first grounded separator (3) and the second grounded separator (4) via the drive arm (7). In the said intervention process, it can be seen from the first and second screens (8.9) located on the cabin whether the separator (2), the first grounded separator (3) and the second grounded separator (4) are active or not.

[0043] Checking connection combinations is performed as follows:

[0044] For two parallel delta connections, the separator (2), the first grounded separator (3) and the second grounded separator (4) are disabled.

[0045] For delta-star connection, the separator (2) and the first grounded separator (3) are disabled.

[0046] For two parallel star connections, only the separator (2) is disabled.

[0047] For two series delta connections, the first grounded separator (3) and the second grounded separator (4) are disabled. For two series star connections, only the first grounded separator (3) is disabled.

[0048] The scope of protection for the invention is specified in the appended claims and cannot be limited to what is described in this detailed description for illustrative purposes. It is clear that a person skilled in art can devise similar embodiments in light of the foregoing without deviating from the main theme of the invention.

Claims

CLAIMS1. The invention is a hybrid capacitor (A) developed to eliminate the disadvantages arising from the existing capacitor banks used in the "measurement of short circuit impedance and load losses" test, which is one of the routine tests of transformers, characterized in that; it comprises:• 3 capacitors (1 ) that provide the reactive power needed for the "measurement of short circuit impedance and load losses" test,• Separator (2) that allows the energy in the mentioned capacitors (1 ) to be transferred to the busbar (transformer transmission line) or to be deactivated,• First and second grounded separators (3, 4) that ensure that the energy in the mentioned capacitors (1 ) is transferred to the busbar and that their ends are grounded safely by short-circuiting when not transferred to the busbar,• Cabinet (5) configured to safely store all components of the hybrid capacitor bank (A) and protect them from external factors and increase operator safety,• Separator arm (6) connected to each separator (2), first grounded separator (3) and second grounded separator (4) to enable and disable them in order to change the connection combinations of the hybrid capacitor bank (A),• Drive arm (7) that enables the said separator arms (6) to be driven by the operator,• First screen (8) positioned on the cabinet (5) to visually show the operator that the separator (2), the first grounded separator (3) and the second grounded separator (4) are engaged according to the position of the said drive arm (7),• Second screen (9) positioned on the cabinet (5) to visually show the operator that the separator (2), the first grounded separator (3) and the second grounded separator (4) are disabled according to the position of the said drive arm (6),A hybrid capacitor bank (A) according to claim 1 , wherein; it comprises a drive mechanism that enables the said drive arm (7) to be moved without the need for operator power.

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