CN204258115U - The intelligent Prefabricated high-low voltage transformer substation of 10kV - Google Patents

Abstract

The utility model provides the intelligent Prefabricated high-low voltage transformer substation of a kind of 10kV, comprise hyperbaric chamber, automation room, transformer room, low-pressure chamber, communication room, concentrator room and shell, high-voltage board is provided with in hyperbaric chamber, high-voltage board adopts hermetically sealed gas-insulated 10kV ring main unit, the ring of ring main unit enters, the on-load switch that ring goes out installs motor-operating mechanism and divide-shut brake position signalling auxiliary contact respectively, the fault detector summation current transformer of the 10kV line side configure band signal contact output of ring main unit, fault detector has the auxiliary contact that fault-signal exports, on-load switch position signalling, the current signal of the fault-signal summation current transformer of fault detector exports automation equipment to, the real-time operating conditions that case becomes can be understood by this transformer station, the existence of Judging fault point as early as possible, with the shortest time, fault case is become out of service, effectively prevents the generation with some other security incident that spreads of fault point.

Description

10kV intelligent high and low voltage prefabricated substation

technical field

The utility model relates to a 10kV intelligent high and low voltage prefabricated substation.

Background technique

The existing ordinary high and low voltage prefabricated substations, hereinafter referred to as box transformers, are used for ring network power supply in the community. If a box transformer in the ring network fails to make a timely judgment, it is necessary for residents of the community to find out When there is a power outage at home and a repair call is made, the power supply company can only go to the scene to find the fault point and eliminate the fault point. It cannot make early identification and elimination, which greatly increases the time and cost of maintenance. The main reason is that the high and low voltage side of the box substation The running data cannot be uploaded, so it cannot be detected and eliminated in advance.

Utility model content

The utility model is a 10kV intelligent high and low voltage prefabricated substation, by adding an electric operation mechanism and auxiliary contacts for position indication on the high voltage side SF6 ring network cabinet, and adding an open 10kV current transformer and fault indication on the high voltage cable side and set up a separate automation room, install power distribution automation devices and uninterruptible power supplies in the automation room, and set up communication boxes and concentrator boxes on both sides of the low-voltage room of the box transformer to meet the requirements of remote control, remote signaling and telemetry, so as to achieve distribution network automation requirements.

The technical solution of the utility model is:

A 10kV intelligent high-voltage and low-voltage prefabricated substation, including a high-voltage room, an automation room, a transformer room, a low-voltage room, a communication room, a concentrator room and an enclosure. The transformer room is equipped with a transformer, and the high-voltage room is equipped with a high-voltage cabinet. The high-voltage cabinet adopts Fully-sealed gas-insulated 10kV ring network cabinet, the ring input and ring output of the ring network cabinet are respectively equipped with load switches, and the load switches are equipped with electric operating mechanisms and auxiliary contacts for opening and closing position signals. The operating power of the electric operating mechanisms is taken from different For intermittent power supply, the 10kV line side of the ring network cabinet is equipped with a fault indicator with signal contact output and 10kV current transformer and/or 10kV voltage transformer. The fault indicator has auxiliary contacts for fault signal output, load switch position signal, fault The fault signal of the indicator and the current signal of the current transformer are output to the automation device. The automation device adopts CSG-DFA01 distributed distribution network automation terminal; the load switch is connected to the high voltage side of the transformer through a high voltage fuse, and the two ends of the high voltage fuse are connected respectively There is a grounding switch, and the low-voltage side of the transformer is connected to the low-voltage circuit breaker through a 0.4kV busbar and a 0.4kV current transformer; the automation room is equipped with a centralized FA device or a distributed FA device, and the FA device judges the fault through the fault indicator or current transformer; The communication room is equipped with network data transmission equipment, and the concentrator room is equipped with a concentrator device of the user electricity information collection system.

Furthermore, the position status signals of the load switch and grounding switch of the high-voltage ring network cabinet, the position status signal of the fuse, the current and voltage signals of the high-voltage side and the low-voltage side are transmitted to the background monitoring equipment through the network data transmission equipment in real time, and the load of the high-voltage ring network cabinet The position status signal of the switch and the grounding switch are obtained through the position conversion auxiliary contact, the fuse blown status signal is obtained through the travel switch position signal, and the current and voltage signals of the high voltage side are obtained through the 10kV openable current transformer and the 10kV voltage transformer respectively , the low-voltage side current signal is obtained through a 0.4kV current transformer, and the voltage signal comes directly from the 0.4kV bus.

Furthermore, the shell is made of aluminum alloy, and the high-voltage room, transformer room, and low-voltage room are arranged in a grid pattern, and the two sides of the low-voltage room are respectively equipped with a communication room and a concentrator room.

The beneficial effects of the utility model are: the 10kV intelligent high and low voltage prefabricated substation can complete the commissioning and removal of any box substation in the ring network without the need for operators to go to the site; the box substation The position status signal of the load switch and grounding switch of the high-voltage ring network cabinet, the position status signal of the fuse, and the current and voltage signals of the high and low voltage sides are transmitted to the background monitoring equipment through optical fibers in real time, so that the operation status of the box transformer can be understood in real time and the fault point can be identified as early as possible. Existence, the faulty substation will be out of operation in the shortest time, effectively preventing the spread of fault points and the occurrence of other safety accidents.

Description of drawings

Figure 1 is a schematic structural view of an embodiment of the utility model;

Fig. 2 is the structural representation of automation supporting equipment in the embodiment;

Fig. 3 is the connection schematic diagram of ring-in, ring-out and load switch and transformer of ring main unit in the embodiment;

Among them: 1-high voltage room, 2-automation room, 3-transformer room, 4-low voltage room, 5-communication room, 6-concentrator room, 7-uninterruptible power supply, 8-transformer, 9-automation device, 10- Shell, 11-load switch, 12-10kV current transformer, 13-high voltage fuse, 14-0.4 kV current transformer, 15-low voltage circuit breaker, 16-grounding switch.

Detailed ways

Preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

Example

A 10kV intelligent high-voltage and low-voltage prefabricated substation, as shown in Figure 1, includes a high-voltage room 1, an automation room 2, a transformer room 3, a low-voltage room 4, a communication room 5, a concentrator room 6, and a housing 10. The transformer room 3 is equipped with There is a transformer 8, and a high-voltage cabinet is installed in the high-voltage room 1. The high-voltage cabinet adopts a fully sealed gas-insulated 10kV ring network cabinet. The ring input and ring output of the ring network cabinet are respectively equipped with load switches 11, and the load switches 11 are equipped with electric operating mechanisms. And the opening and closing position signal auxiliary contact, the operating power of the electric operating mechanism is taken from the uninterruptible power supply 7, the 10kV line side of the ring main unit is equipped with a fault indicator with signal contact output and 10kV current transformer 12 and/or 10kV voltage mutual inductance The fault indicator has an auxiliary contact for fault signal output. The position signal of the load switch 11, the fault signal of the fault indicator and the current signal of the current transformer are output to the automation device 9, as shown in Figure 2. The automation device 9 adopts CSG-DFA01 Distributed distribution network automation terminal; the load switch 11 is connected to the high-voltage side of the transformer 8 through the high-voltage fuse 13, and the two ends of the high-voltage fuse 13 are respectively connected to the grounding switch 16, and the low-voltage side of the transformer 8 is connected to the 0.4kV bus and 0.4kV current mutual inductance The device 14 is connected to the low-voltage circuit breaker 15.

The position status signal of the load switch 11 and the grounding switch 16 of the high-voltage ring network cabinet, the position status signal of the fuse, the current and voltage signals of the high-voltage side and the low-voltage side are transmitted to the background monitoring equipment through the network data transmission device in real time, and the load switch of the high-voltage ring network cabinet 11. The position state signal of the grounding switch 16 is obtained through the auxiliary position conversion contact, the fuse blown state signal is obtained through the travel switch position signal, and the current and voltage signals of the high voltage side are obtained through the 10kV openable current transformer and the 10kV voltage transformer respectively. To acquire, the low-voltage side current signal is acquired through the 0.4kV current transformer 14, and the voltage signal is directly derived from the 0.4kV bus.

The automation room 2 is equipped with a centralized FA device or a distributed FA device. The FA device is an error analysis device. The FA device judges the fault through the fault indicator or rheology; the transformer room 3 is equipped with a transformer 8, and the communication room 5 is equipped with For network data transmission equipment, the concentrator room 6 is provided with a concentrator device for the user electricity information collection system.

By adding an electric operating mechanism and auxiliary contacts for position indication on the high-voltage side SF6 ring network cabinet, as shown in Figure 3, and adding an open-type high-voltage current transformer and fault indicator on the high-voltage cable side, and setting up a separate automation room 2, in The distribution automation device 9 and the uninterruptible power supply 7 are installed in the automation room 2, and communication boxes and concentrator boxes are installed on both sides of the low-voltage room 4 of the box transformer to meet the requirements of remote control, remote signaling and telemetry, thereby meeting the requirements of distribution network automation.

The high-voltage cabinet adopts a fully-sealed gas-insulated 10kV ring network cabinet, and the load switch 11 that enters and exits the ring network cabinet is equipped with an electric operating mechanism. Opening and closing operation, when the load switch 11 is in the remote state, the automatic device 9 sends an opening and closing signal to perform the opening and closing operation on the load switch 11. The operating power supply of the electric operating mechanism is taken from the AC 220V power supply of the uninterruptible power supply 7, and it is equipped with remote operation. Function, auxiliary contact with position indication, including four pairs of empty contacts, two of which are normally open and two are normally closed, to meet the needs of distribution automation.

The 10kV line side of the ring main unit is equipped with a fault indicator with contact output. The fault indicator has the function of over-current and zero-current indication, and the action contact output is sent to the automation device 9.

The automation room 2 is equipped with a centralized FA device or a distributed FA device. The FA device is an error analysis device, and the fault is judged by the fault indicator or rheology.

The optical network unit ONU, optical fiber distribution frame ODF, optical splitter and other equipment are installed in the communication room for network data transmission based on EPON technology. The working power supply is AC 220V, and the power is supplied from the UPS through the protective circuit breaker.

In the concentrator room 6, a concentrator device of the user electricity information collection system is installed. The working power supply is three-phase AC 380V, and the power is supplied from the low-voltage bus through the protective circuit breaker.

The automation room 2 is also equipped with an uninterruptible power supply 7. The uninterruptible power supply 7 includes a UPS device and a battery pack. The capacity is 3kVA, which is used as a backup operating power supply when the main equipment is powered off.

Setting up an independent automation room 2 makes the functional distinction of each unit clearer, and makes it more convenient and safer for operators when the automation equipment is overhauled or replaced. The substation is suitable for new construction, expansion and reconstruction of supporting 10kV intelligent power supply in residential quarters.

Claims (3)

1. the intelligent Prefabricated high-low voltage transformer substation of 10kV, it is characterized in that: comprise hyperbaric chamber, automation room, transformer room, low-pressure chamber, communication room, concentrator room and shell, transformer is provided with in transformer room, high-voltage board is provided with in hyperbaric chamber, high-voltage board adopts hermetically sealed gas-insulated 10kV ring main unit, the ring of ring main unit enters, ring goes out to be separately installed with on-load switch, on-load switch is all provided with motor-operating mechanism and divide-shut brake position signalling auxiliary contact, the operating power of motor-operating mechanism takes from uninterrupted power supply, the fault detector that the 10kV line side configure band signal contact of ring main unit exports and 10kV current transformer and/or 10kV voltage transformer, fault detector has the auxiliary contact that fault-signal exports, on-load switch position signalling, the current signal of the fault-signal summation current transformer of fault detector exports automation equipment to, automation equipment adopts the distributed distribution automation terminal of CSG-DFA01, on-load switch is by the high-pressure side of high-tension fuse connection transformer, and the two ends of high-tension fuse are connected to earthed switch, and the low-pressure side of transformer connects low-voltage circuit breaker by 0.4kV bus, 0.4kV current transformer, automation indoor are provided with centralized FA device or distributed FA device, and FA device judges fault by fault detector or current transformer, be provided with network data transmission equipment in communication room, concentrator indoor are provided with user power utilization information acquisition system concentrator apparatus.

2. the intelligent Prefabricated high-low voltage transformer substation of 10kV as claimed in claim 1, it is characterized in that: the on-load switch of high-voltage ring main unit and the position state signal of earthed switch, fuse position state signal, the current and voltage signals of high-pressure side and low-pressure side imports background monitoring equipment into by network data transmission equipment in real time, high-voltage ring main unit on-load switch, the position state signal of earthed switch is obtained by position conversion auxiliary contact, fuse failure status signal is obtained by travel switch position signalling, high voltage side current voltage signal obtains respectively by 10kV openable current transformer and 10kV voltage transformer, low-pressure side current signal is obtained by 0.4kV current transformer, voltage signal is directed to 0.4kV bus.

3. the intelligent Prefabricated high-low voltage transformer substation of 10kV as claimed in claim 1 or 2, is characterized in that: shell adopts aluminum alloy casing, and hyperbaric chamber, transformer room, low-pressure chamber adopt the arrangement of order font, and the both sides of low-pressure chamber are respectively equipped with communication room, concentrator room.