CN211456705U

CN211456705U - Compact parallel capacitor device

Info

Publication number: CN211456705U
Application number: CN202020142108.5U
Authority: CN
Inventors: 刘�文; 秦小荣; 王肖; 李大燕; 李自军; 武红旗; 崔江丽
Original assignee: Herong Electric Co ltd
Current assignee: Herong Electric Co ltd
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2020-09-08
Anticipated expiration: 2030-01-22

Abstract

The utility model discloses a compact parallel capacitor device, including the condenser module, the top of condenser module is equipped with reactor subassembly module, and one side of reactor subassembly module is equipped with complete set cabinet module, and complete set cabinet module is equipped with oily compensation module with the top of reactor subassembly module butt joint department. The utility model discloses utilize the capacitive reactive of condenser output in reactive compensation and the square proportional principle of its terminal voltage, the output voltage through the control voltage regulator changes the terminal voltage of fixed capacitor group, realizes having of electric capacity to carry and adjusts, reaches the reactive purpose of meticulous compensation.

Description

Compact parallel capacitor device

Technical Field

The utility model belongs to the technical field of electric power system reactive power compensator capacitor equipment, a compact parallel capacitor device is related to.

Background

The voltage quality has direct influence on the stability of a power grid, the safe operation of power equipment, the line loss, the industrial and agricultural safety production and the electricity utilization of people and life. The line voltage of the power grid in China has large change due to the influence of factors such as power supply radius, load distribution and the like. Therefore, in the design process of the capacitor structure, the on-load adjustment of the capacitor needs to be realized, and the purpose of fine reactive compensation is achieved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a compact shunt capacitance ware device, the device utilize the capacitive reactive of condenser output in reactive compensation and the square proportional principle of its terminal voltage, the output voltage through the control voltage regulator changes the terminal voltage of fixed capacitor group, realizes having of electric capacity to carry and adjusts, reaches the reactive purpose of meticulous compensation.

The utility model provides a, a compact parallel capacitor device, including the condenser module, the top of condenser module is equipped with reactor subassembly module, and one side of reactor subassembly module is equipped with complete set cabinet module, and complete set cabinet module is equipped with the oil compensation module with the top of reactor subassembly module butt joint department.

The utility model is also characterized in that,

the capacitor module includes a capacitor case in which a capacitor core is fitted.

The reactor component module comprises a reactor shell, and a voltage regulator core body, a reactor core body and a tap switch are respectively arranged in the reactor shell.

The inlet end of the voltage regulator core is connected to the bus, the outlet end of the voltage regulator core is connected with the inlet end of the reactor core through the tap switch, and the outlet end of the reactor core is connected with the power supply side of the capacitor core.

The complete cabinet module comprises a zinc oxide arrester and a discharge coil.

The beneficial effects of the utility model are that, this device has broken through the traditional reactive compensation mode of carrying out the grouping switching with circuit breaker, contactor to the condenser, has solved the inrush current of switching in-process and has recombusted overvoltage scheduling problem, through the output voltage who changes the voltage regulator, changes compensating capacitor's terminal voltage, and then the reactive power of change arrangement output realizes carrying out automatic compensation to electric power system's reactive power. And meanwhile, the load power factor and the transmission capacity of a power grid are improved, the power loss is reduced, and the voltage quality is improved. The integrated structural design concept changes the structural mode that the traditional reactive power compensation device is large in size and heavy. The novel reactive compensation equipment has the characteristics of lower power consumption, smaller volume, longer service life and higher reliability, and meets the requirement of the intelligent power grid on reactive compensation.

Drawings

Fig. 1 is an assembly schematic of a compact parallel capacitor arrangement of the present invention;

fig. 2 is a schematic diagram of the internal structure of a compact parallel capacitor device according to the present invention.

In the figure, 1, a capacitor core, 2, a voltage regulator core, 3, a reactor core, 4, a zinc oxide arrester, 5, a discharge coil, 6, a capacitor module, 7, a reactor component module, 8, a tap switch, 9, an oil compensation module and 10, a complete cabinet module.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The utility model relates to a compact parallel capacitor device, as shown in fig. 1, 2, including capacitor module 6, capacitor module 6's top is equipped with reactor subassembly module 7, and one side of reactor subassembly module 7 is equipped with complete cabinet module 10, and complete cabinet module 10 is equipped with oil compensation module 9 with the top of reactor subassembly module 7 butt joint department. The capacitor module 6, the reactor component module 7, the oil compensation module 9 and the complete set of cabinet module 10 are connected through bolts, and the complete set of cabinet module is convenient to detach.

The capacitor module 6 comprises a capacitor housing in which the capacitor core 1 is fitted.

The reactor component module 7 comprises a reactor shell, and a voltage regulator core 2, a reactor core 3 and a tap switch 8 are respectively arranged in the reactor shell.

The inlet end of the voltage regulator core body 2 is connected to a bus, the outlet end of the voltage regulator core body 2 is connected with the inlet end of the reactor core body 3 through the tap switch 8, and the outlet end of the reactor core body 3 is connected with the power supply side of the capacitor core body 1. Therefore, the purposes of voltage stabilization, adjustable capacitor end voltage and adjustable capacitor output reactive capacity can be realized.

The complete cabinet module 10 includes a zinc oxide arrester 4 and a discharge coil 5 therein.

Reactor subassembly module 7 and complete set cabinet module 10 horizontal direction are left the interface and are satisfied the electrical part and connect, and the top of two modules of reactor subassembly module 7 and complete set cabinet module 10 has all welded the support channel-section steel, and the assembly is accomplished through the mounting panel of its bottom and the bolted connection of this support channel-section steel to oil compensation module 9, finally makes the utility model relates to a compact parallel capacitor device becomes the all-in-one of many modules combination.

The utility model relates to a compact parallel capacitor device's characteristics are as follows:

1. the integration level is high, and the comprehensiveness is strong. The device is an integrated high-voltage parallel capacitor and oil-immersed series capacitor

The high-integration integrated reactive automatic compensation device is formed by combining main high-voltage equipment such as an reactor, an auto-coupling voltage regulator, an on-load tap-changer, an intelligent controller, a discharge coil, a zinc oxide arrester and the like and matched equipment such as a terminal box, a control cabinet, primary wiring and secondary wiring.

2. The input is fixed, and the capacity is automatically adjusted. The device changes the terminal voltage of the compensating capacitor by changing the output voltage of the voltage regulator, and then changes the reactive power output by the device, thereby realizing 9-gear output. The intelligent controller is used for automatically controlling the on-load decomposition switch to regulate the output voltage of the voltage regulator, and the regulation precision is high and the regulation range is wide.

3. Module design, building block collocation. The device is divided into four parts, namely a capacitor module, a reactor component module, an oil compensation module and a complete set of cabinet modules. The design concept of modular production of each part and modular matching of the whole machine is adopted; the totally closed scheme of box structure avoids the damage of bird pest, sand and dust to power equipment.

4. Safe and reliable, durable. In the switching process of the device, the voltage regulating level difference of the voltage regulator is small, and in addition, the connection of the transition resistor of the on-load tap-changer and the leakage reactance of the voltage regulator are added, so that the inrush current is hardly generated, the impact on the system is greatly reduced, and the safe operation of the system is ensured. And the capacitor operates below the rated voltage for a long time, the switching overvoltage and inrush current problems are avoided, and the service life of the capacitor is prolonged.

5. Compact structure and free maintenance. The integrated full-insulation direct-landing installation has good anti-seismic performance and small occupied area. After the field positioning, the operation can be carried out by accessing the power grid. The installation and debugging man-hour is reduced by more than 45% compared with the traditional mode, and 65% of connecting lines and nodes are reduced. The device body is designed in a full-sealed mode, insulation oil detection is not needed, an exposed charged body is not needed, and the device is safe, reliable and maintenance-free.

6. The oil conservator has double liners and double oil-way compensation; the radiator is only arranged on the shell of the reactor component module with higher calorific value, so that the product has longer service life.

7. The automatic control is realized by one-time investment, and unattended operation and remote operation are realized; the integration level is high, the comprehensive function is comprehensive, the output reactive capacity can be automatically adjusted, and non-electric quantity protection such as oil temperature, gas and pressure can also provide reliable signals, so that the system is safe and reliable; the structure is compact, the occupied area is small, and the land and house resources are saved; the costs of production, transportation, installation and the like are greatly reduced; intelligent control, non-maintaining satisfies unmanned on duty intelligent transformer substation.

Claims

1. The compact parallel capacitor device is characterized by comprising a capacitor module, wherein a reactor component module is arranged above the capacitor module, a complete cabinet module is arranged on one side of the reactor component module, and an oil compensation module is arranged at the top of the butt joint of the complete cabinet module and the reactor component module.

2. The compact parallel capacitor arrangement of claim 1, wherein the capacitor module comprises a capacitor housing having a capacitor core mounted therein.

3. A compact parallel capacitor arrangement according to claim 2, characterized in that the reactor assembly module comprises a reactor housing in which the voltage regulator core, the reactor core and the tap changer are mounted, respectively.

4. A compact parallel capacitor device according to claim 3, wherein the inlet terminal of the voltage regulator core is connected to the bus bar, the outlet terminal of the voltage regulator core is connected to the inlet terminal of the reactor core through the tap changer, and the outlet terminal of the reactor core is connected to the power supply side of the capacitor core.

5. A compact parallel capacitor arrangement according to claim 3, characterized in that the cabinet set module comprises a zinc oxide arrester and a discharge coil inside.