CN205901303U - A dynamic harmonic control system for power quality optimization - Google Patents

Abstract

The utility model relates to an electric energy quality optimization's dynamic harmonic treatment system, the present invention comprises a central processing unit, the current and voltage sampling unit, power detection unit, the harmonic detection unit, the filtering unit, reactive power compensation unit and use electrical apparatus the control unit, the current and voltage sampling unit, power detection unit, the harmonic detection unit is divided equally otherly and each electric power cable electrical connection of power supply network, with electrical apparatus the control unit and power supply network electrical connection, the filtering unit, the reactive power compensation unit is respectively through the electric power cable electrical connection of branch road wire with power supply network, a central processing unit respectively with the current and voltage sampling unit, power detection unit, the harmonic detection unit, the reactive power compensation unit, with electrical apparatus the control unit and control switch electrical connection. This novel one side can effectually be polluted with the harmonic that produces the power grid operation in -process and administer, and on the other hand can regulate and control power supply power grid operation device, reactive power isoparametric according to the use needs.

Description

A dynamic harmonic control system for power quality optimization

technical field

The utility model relates to a harmonic elimination system, in particular to a dynamic harmonic control system for power quality optimization.

Background technique

The power supply grid is an important equipment to meet the power supply and transmission. The stability of its operation directly affects the operation safety of the power supply line and the stability of the electrical equipment. The reasons for the operation of electrical equipment and the complex electromagnetic environment of the power grid can easily cause a large amount of harmonic pollution during the operation of the power grid, which seriously affects the quality of power supply of the power grid and the safety and reliability of the operation of the power grid and electrical equipment. In response to this problem, there are currently a variety of harmonic quality equipment. Although they can meet the needs of actual use to a certain extent, their flexibility is relatively poor during operation, and they cannot be flexibly adjusted according to the actual situation of harmonics and the load of the power supply circuit. At the same time, it is impossible to regulate the operation loss during the operation of the power grid, resulting in a certain amount of power loss. Therefore, in response to this problem, it is urgent to develop a new type of harmonic control system to meet the needs of actual use.

Utility model content

Aiming at the deficiencies in the existing technology, the utility model provides a dynamic harmonic control system with power quality optimization. The new system is simple in structure, flexible and convenient in use, and has good operation stability. On the one hand, it can effectively control the power grid operation process. In order to control the harmonic pollution generated, on the other hand, according to the needs of use, it can adjust the parameters of the power supply grid operating equipment, reactive power, etc., so as to help improve the operating efficiency of the grid and reduce energy consumption.

In order to achieve the above object, the utility model is realized through the following technical solutions:

A dynamic harmonic control system for power quality optimization, including a central processing unit, a current and voltage sampling unit, a power detection unit, a harmonic detection unit, a filter unit, a reactive power compensation unit, and an electrical appliance control unit, a current and voltage sampling unit, There is at least one power detection unit and harmonic detection unit, and they are respectively electrically connected to the power cables of the power supply grid, and each power cable is equipped with at least one current and voltage sampling unit, power detection unit and harmonic detection unit, There are several control units of electrical appliances, which are electrically connected to the power supply grid respectively, and the control units of electrical appliances are connected in parallel with each other. There are several filter units and reactive power compensation units, which are respectively electrically connected to the power cables of the power supply grid through branch wires. The wires of the road include at least two wires, and the diameters of the wires are the same, and the difference in resistivity is not greater than 0.1-10 ohm. Unit, harmonic detection unit, reactive power compensation unit, electrical appliance control unit and control switch are electrically connected.

Further, the central processing unit includes an FPGA-based data processing circuit, a data storage circuit, a clock circuit, a drive circuit, an address encoding circuit, a communication circuit, an I/O port circuit, a display, an operation keyboard and a data bus, and the The data processing circuit of the FPGA is electrically connected to the data storage circuit, the clock circuit, the drive circuit, the address encoding circuit, the communication circuit, and the I/O port circuit respectively through the data bus, and the drive circuit is connected to the current and voltage sampling unit and the power detection unit , the harmonic detection unit, the reactive power compensation unit, the electrical appliance control unit and the control switch are electrically connected, and the I/O port circuit is also electrically connected to the display and the operating keyboard.

Further, there are several filtering units and reactive power compensation units, and each filtering unit and reactive power compensation unit are connected in parallel with each other.

The new system is simple in structure, flexible and convenient to use, and has good operation stability. On the one hand, it can effectively control the harmonic pollution generated during the operation of the power grid; Parameters such as power and power are regulated, which helps to improve the efficiency of power grid operation and reduce energy consumption.

Description of drawings

The utility model is described in detail below in conjunction with accompanying drawing and specific embodiment;

Fig. 1 is the structural representation of the present invention;

Figure 2 is a schematic diagram of the central processing unit circuit.

detailed description

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments.

A dynamic harmonic control system for power quality optimization as shown in Figure 1, including a central processing unit 1, a current and voltage sampling unit 2, a power detection unit 3, a harmonic detection unit 4, a filter unit 5, and reactive power compensation Unit 6 and electrical appliance control unit 7, current and voltage sampling unit 2, power detection unit 3, and harmonic detection unit 4 are at least one, and are respectively electrically connected to the power cables of the power supply grid 8, and each power cable has At least one current and voltage sampling unit 2, a power detection unit 3 and a harmonic detection unit 4 are set respectively, and several electrical appliance control units 7 are respectively electrically connected to the power supply grid 8, and each electrical appliance control unit 8 is connected in parallel with each other, and the filter unit 5 1. Several reactive power compensation units 6 are electrically connected to the power cables of the power supply grid 8 through branch wires 9 respectively. The branch wires 9 include at least two wires 91, and the diameters of the wires 91 are the same, and the resistivity difference is different. Greater than 0.1-10 ohm.m, and the wires 91 are connected in parallel with each other through the control switch 92, the central processing unit 1 is respectively connected with the current and voltage sampling unit 2, the power detection unit 3, the harmonic detection unit 4, and the reactive power compensation unit 6 , The electric appliance control unit 7 and the control switch 92 are electrically connected.

In this embodiment, the central processing unit 1 includes an FPGA-based data processing circuit, a data storage circuit, a clock circuit, a drive circuit, an address coding circuit, a communication circuit, an I/O port circuit, a display, an operation keyboard and a data bus , the data processing circuit of the FPGA is electrically connected to the data storage circuit, the clock circuit, the drive circuit, the address coding circuit, the communication circuit, and the I/O port circuit respectively through the data bus, and the drive circuit and the current and voltage sampling unit 2 , the power detection unit 3, the harmonic detection unit 4, the reactive power compensation unit 6, the electrical appliance control unit 7 and the control switch 92 are electrically connected, and the I/O port circuit is also electrically connected with the display and the operating keyboard.

In this embodiment, there are several filtering units 5 and reactive power compensation units 6, and each filtering unit 5 and reactive power compensation unit 6 are connected in parallel with each other.

The new system is simple in structure, flexible and convenient to use, and has good operation stability. On the one hand, it can effectively control the harmonic pollution generated during the operation of the power grid; Parameters such as power and power are regulated, which helps to improve the efficiency of power grid operation and reduce energy consumption.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims (3)

1. a kind of electric energy quality optimizing dynamic harmonic system it is characterised in that: described electric energy quality optimizing dynamic Harmonic treatment system includes CPU, current-voltage sampling unit, power detecting unit, harmonic detecting unit, filtering Unit, reactive power compensation unit and electrical appliance control unit, described current-voltage sampling unit, power detecting unit, humorous Ripple detector unit all at least one, and each electric power cable electrical connection with power supply grid respectively, and dividing equally on every electric power cable Do not set at least one current-voltage sampling unit, power detecting unit harmonic detector unit, described electrical appliance control unit Some, and be electrically connected with power supply grid respectively, and each electrical appliance control unit is parallel with one another, described filter unit, idle Power compensating unit is some, and respectively by the electric power cable electrical connection of a line conductor and power supply grid, described branch road is led Line includes at least two wires, and each wire diameter is identical, and differential resistivity is not more than 0.1 10 Europe. and all logical between rice, and each wire Cross that controlling switch is parallel with one another, described CPU respectively with current-voltage sampling unit, power detecting unit, harmonic wave Detector unit, reactive power compensation unit, electrical appliance control unit and controlling switch electrical connection.

2. a kind of electric energy quality optimizing according to claim 1 dynamic harmonic system it is characterised in that: described CPU includes data processing circuit based on fpga, data storage circuitry, clock circuit, drive circuit, address are compiled Code circuit, communicating circuit, i/o port circuit, display, operation keyboard and data/address bus, the data processing of described fpga is electric Road pass through data/address bus respectively with data storage circuitry, clock circuit, drive circuit, address encoding circuit, communicating circuit, i/o Port circuit is electrically connected, described drive circuit and current-voltage sampling unit, power detecting unit, harmonic detecting unit, Reactive power compensation unit, electrical appliance control unit and controlling switch electrical connection, described i/o port circuit is another and shows Device, operation keyboard electrical connection.

3. a kind of electric energy quality optimizing according to claim 1 dynamic harmonic system it is characterised in that: described Filter unit, reactive power compensation unit all several, and parallel with one another between each filter unit, reactive power compensation unit.