CN106953370B

CN106953370B - Power supply system of electronic equipment in power system

Info

Publication number: CN106953370B
Application number: CN201710234592.7A
Authority: CN
Inventors: 范彩云; 何青连; 韩坤; 刘堃; 夏克鹏; 王宇丁; 焦中原; 王超; 秦伟伟; 李旭升
Original assignee: State Grid Corp of China SGCC; Xuji Group Co Ltd; XJ Electric Co Ltd
Current assignee: State Grid Corp of China SGCC; Xuji Group Co Ltd; XJ Electric Co Ltd
Priority date: 2017-04-11
Filing date: 2017-04-11
Publication date: 2020-01-31
Anticipated expiration: 2037-04-11
Also published as: CN106953370A

Abstract

The invention relates to a power supply system of kinds of power system electronic equipment, including at least main transformers, draw at least to get the end on each main transformer, each gets the end and exports the connecting layer transformer, each layer of transformer corresponds to each layer of electronic equipment , pass at least to get the module on the energy supply circuit that the corresponding layer of transformer output of all main transformers, for a certain layer of transformers, each gets the module and corresponds to each electronic equipment in the corresponding layer of electronic equipment, each gets the module and exports at least electric energy output lines, used for supplying power for corresponding electronic equipment, this power supply system not only can realize the reliable power supply of each electronic equipment in the power system, and, through setting up the number of main transformer, layer of transformer and electric energy output line flexibly and realizing the redundant power supply of each level of electronic equipment from high to low, step guarantee the reliability of power supply.

Description

Power supply system of electronic equipment in power system

Technical Field

The invention relates to a power supply system of power system electronic equipment.

Background

Electronic equipment in a power system, particularly high-voltage direct-current electronic equipment such as a high-voltage direct-current circuit breaker, is of a multilayer structure, namely the electronic equipment in the power system is divided into multiple layers, and each layer of electronic equipment is provided with a plurality of electronic equipment, for example, the electronic equipment is formed by connecting electronic switching elements such as IGBTs in series.

High-voltage direct-current electronic equipment in a power system is important equipment, but the current power supply mode is unreliable, and reliable power supply of each electronic equipment cannot be realized.

Disclosure of Invention

The invention aims to provide power supply systems of power system electronic equipment, which are used for reliably supplying power to electronic equipment on each layer in a power system.

In order to achieve the above object, the present invention provides a power supply system for kinds of power system electronic devices, including at least main transformers, each main transformer having at least energy-taking ends, each energy-taking end being connected with a layer transformer, each layer transformer corresponding to each layer of electronic device , energy-transmitting lines output by the layer transformers corresponding to all the main transformers pass through at least energy-taking modules, for any layers, each energy-taking module corresponds to each electronic device in the corresponding layer of electronic devices, and each energy-taking module outputs at least electric energy output lines for supplying power to the corresponding electronic device.

The power supply system comprises at least two main transformers.

And each energy taking module outputs at least two paths of electric energy output lines for redundantly supplying power to corresponding electronic equipment.

The energy taking module is an energy taking mutual inductor.

And each path of electric energy output line is provided with an AC/DC converter, and the direct current side of the AC/DC converter is used for connecting corresponding electronic equipment.

The main transformer is formed by sequentially connecting at least two sub-transformers, energy-taking ends are led out from each sub-transformer, and for any main transformers, each sub-transformer corresponds to each layer of transformer .

The power supply system of the electronic equipment of the power system comprises at least main transformers, at least energy taking ends are led out of each main transformer, each energy taking end is connected with a layer transformer, each layer transformer is used for supplying power to the electronic equipment of a corresponding layer, when a plurality of main transformers are arranged, redundant power supply of the electronic equipment of each layer can be realized, and reliable power supply of the electronic equipment is realized.

Drawings

FIG. 1 is a schematic diagram of the connection relationship between a double main transformer and a layer transformer;

FIG. 2 is a schematic diagram of the positional relationship between an energy-taking transformer and a layer transformer;

fig. 3 is a schematic structural diagram of an electric energy output line of the energy-taking mutual inductor.

Detailed Description

The present embodiment provides power supply systems for power system electronic devices, which include at least main transformers, each main transformer has at least energy-taking ends, and each energy-taking end is connected to a layer transformer corresponding to an output, so that the energy-taking ends of the main transformers correspond to the layer transformer , that is, each main transformer has at least layer transformers, and each layer of transformers corresponds to each layer of electronic devices , and finally each layer of transformers supplies power to the electronic devices on the corresponding layer.

The structure of the main transformer is determined according to actual requirements, and can only comprise groups of windings, namely only primary windings and secondary windings, wherein each energy taking end is led out from the primary windings and/or the secondary windings, and the main transformer can also be in the structure shown in fig. 1 and comprises a plurality of primary windings and secondary windings, wherein the secondary windings are connected with the second primary windings, the second secondary windings are connected with the third primary windings, and the like, so that the structure of the main transformer is equivalent to the structure formed by sequentially connecting a plurality of transformers.

In this embodiment, the power supply system includes two main transformers, as shown in fig. 1, the 1# main transformer and the 2# main transformer are both power frequency isolation transformers, and the ac power is transmitted to the high potential through the two main transformers. The 1# main transformer is formed by sequentially connecting three sub-transformers, namely a transformer 1T1, a transformer 1T2 and a transformer 1T 3; the 2# main transformer is formed by sequentially connecting three sub-transformers, namely transformers 2T1, 2T2 and 2T 3.

As mentioned above, at least layers of transformers are led out from each main transformer, the number of the led-out layer transformers is set according to the actual situation, in this embodiment, there are several layers of electronic devices in the power system, and how many layers of transformers need to be led out, that is, layers of transformers are led out from each sub-transformer, in this embodiment, the power system includes three layers of electronic devices, as shown in fig. 1, since the 1# main transformer is formed by sequentially connecting three sub-transformers, energy-taking ends are provided on the transformer 1T1, energy-taking ends are provided on the transformer 1T2, energy-taking ends are provided on the transformer 1T3, then, 3 layers of transformers are led out from the 1# main transformer, that is, respectively, the layers of transformers 1T4, 1T5 and 1T5, the energy-taking ends on the transformer 1T5 correspond to the output connection layer transformer 1T 364, the energy-taking ends on the transformer 1T5 correspond to the output connection layer transformer T362, and the layers of the transformer T362, and the sub-layer transformer 72, and the high-current-taking ends of the transformer are respectively connected to the sub-layer transformer 72, and the transformer 3 layers of the transformer 362 output layer transformer 5, and the transformer, and the high-side transformer, which are connected to the high-side transformer 3 high-side transformer, and the high-side transformer 362 high-side transformer, which are connected to the high-side transformer, and the high-side transformer 362 high-side transformer 5, which is connected to the high-side transformer 3 transformer, which is connected to the high-side transformer 3-side transformer, and the high.

Furthermore, layer transformer 1T4 corresponds to layer transformer 2T4 and is a corresponding layer transformer for redundantly supplying power to the electronic devices of the same layer, layer transformer 1T5 corresponds to layer transformer 2T5 and is a corresponding layer transformer for redundantly supplying power to the electronic devices of the same layer, layer transformer 1T6 corresponds to layer transformer 2T6 and is a corresponding layer transformer for redundantly supplying power to the electronic devices of the same layer, that is, as shown in fig. 1, layer transformer 1T6 and layer transformer 2T6 transmit power to the electronic devices of the layer to supply power to the electronic devices of the layer, layer transformer 1T5 and layer transformer 2T5 transmit power to the electronic devices of the second layer to supply power to the electronic devices of the second layer, and layer transformer 1T4 and layer transformer 2T4 transmit power to the electronic devices of the third layer to supply power to the electronic devices of the third layer.

The energy transmission lines output by the transformers of the corresponding layers of all the main transformers penetrate through at least energy taking modules, and each energy taking module corresponds to each electronic device in the electronic devices of the corresponding layers for a -layer transformer, so if the main transformers only have , and correspondingly, if the electronic devices of -layer correspond to only -layer transformers, -layer transformers can only output energy transmission lines.

In the following description, layer transformer 1T4 and layer transformer 2T4 are taken as an example, and the connection structures of the other layer transformers are the same, the secondary side of layer transformer 1T4 forms energy sending loops, and the secondary side of layer transformer 2T4 also forms energy sending loops, as shown in fig. 2, a third layer electronic device corresponding to layer transformer 1T4 and layer transformer 2T4 corresponds to at least energy taking modules for supplying power to the layer electronic device, the number of energy taking modules is the same as the number of electronic devices in the corresponding layer electronic device, and corresponds to each energy taking module for supplying power to the corresponding electronic device in the corresponding layer electronic device, as shown in fig. 2, assuming that the third layer electronic device has N electronic devices, then the number of energy taking modules is N, each energy taking module supplies power to the corresponding electronic device, and each energy taking module passes through both layer transformer 1T4 and layer transformer 2T4, and can simultaneously supply power to the corresponding two energy taking loops from the corresponding layers of CT layers transformer 1T4, so that two energy taking modules pass through both layers of the redundant layers of the energy taking and the energy taking modules, as shown in the embodiment, and the redundant layer transformer 2T 8284, and the two energy taking modules form two energy taking loops for supplying circuits for supplying power supply to the redundant layer transformer 1 and supplying power supply circuits.

For any energy-taking transformers (the connection structure of other energy-taking transformers is the same as that of the energy-taking transformers), the energy-taking transformers output at least power output lines, if only power output lines are output, power supply is realized for corresponding electronic equipment, however, in step , if redundant power supply is realized, power supply reliability is improved, the energy-taking transformers output at least two power output lines, and the embodiment takes as an example that two independent power output lines are output, furthermore, as shown in fig. 3, since the electronic equipment is usually direct current electronic equipment, each power output line is provided with an AC/DC converter, and a direct current end of a direct current side output of the AC/DC converter is used for supplying power for corresponding electronic equipment.

The specific embodiments are given above, but the present invention is not limited to the described embodiments. The basic idea of the present invention is that for the hardware structure of the power supply system, the number of the components, such as the main transformer, the sub-transformers, the layer transformers, etc., and the specification parameters are set according to the actual requirements, so as to meet the operation requirements.

Claims

The power supply system of electronic equipment of power system 1, is characterized by that it includes at least two main transformers, on every main transformer at least energy-taking ends are drawn, every energy-taking end is correspondent to connected layer transformer, every layer of transformer is correspondent to every layer of electronic equipment , the energy-supplying circuit outputted by layer transformer of correspondent layer of all main transformers is passed through at least energy-taking modules, for arbitrary layers, every energy-taking module is correspondent to every electronic equipment in correspondent layer of electronic equipment, every energy-taking module can output at least electric energy output circuit for supplying power to correspondent electronic equipment, the described main transformer is formed by connecting at least two sub-transformers in turn, every sub-transformer has energy-taking ends, and for arbitrary main transformers, every sub-transformer is correspondent to every layer of transformer

The energy taking module is an energy taking mutual inductor.
2. The power supply system of claim 1, wherein each energy-taking module outputs at least two power output lines for redundantly supplying power to the corresponding electronic device.
3. The power supply system for the power system electronic equipment according to claim 1 or 2, wherein each power output line is provided with an AC/DC converter, and a direct current side of the AC/DC converter is used for connecting the corresponding electronic equipment.