Switching station electrical equipment arrangement structure

Abstract

The utility model provides a switch station electrical equipment arrangement structure, and relates to the technical field of switch stations, electrical equipment is divided into three groups corresponding to three phases of three-phase power, and each group of electrical equipment comprises a first tubular bus and a second tubular bus which are arranged in parallel. Each group of electrical equipment further comprises a first lightning arrester, a first voltage transformer, a first single-pole isolating switch, a second single-pole isolating switch, a current transformer, a single-phase circuit breaker, a third single-pole isolating switch, a second incoming and outgoing line, a fourth single-pole isolating switch, a second lightning arrester, a second voltage transformer and a plurality of groups of incoming and outgoing lines; according to the utility model, the single-phase circuit breaker, the lightning arrester and the voltage transformer are arranged at the end part of the tubular bus, so that the number of incoming and outgoing lines is reduced, the overall length of the tubular bus is reduced, the problem of large occupied area of the existing switching station is solved, and the switching station is suitable for switching station construction.

Description

TECHNICAL FIELD

[0001] The utility model relates to switch station technical field, especially switch station electrical equipment arrangement structure. BACKGROUND

[0002] 220kV switch station usually adopts double bus connection, and the bus selects pipe type bus, and the same phase bus is arranged in parallel, and the single-phase circuit breaker, the lightning arrester and the voltage transformer are usually arranged on the two sides of the double bus like the incoming and outgoing line circuit, and each occupies an incoming and outgoing line interval position, and the incoming and outgoing line interval is usually 15 meters, therefore, the existing switch station pipe type bus connection connection device such as bus tie circuit breaker, bus lightning arrester and voltage transformer will occupy an incoming and outgoing line position, which will cause the large area of switch station. UTILITY MODEL CONTENTS

[0003] The utility model solves the technical problem that: provide a kind of switch station electrical equipment arrangement structure, solve the problem of large area of existing switch station.

[0004] The utility model solves the technical problem that the technical scheme that the utility model adopts is as follows: switch station electrical equipment arrangement structure, the electrical equipment is three groups, corresponding three-phase of three-phase electricity, and each group of electrical equipment includes the first pipe type bus and the second pipe type bus arranged in parallel, and each group of electrical equipment further includes first lightning arrester, first voltage transformer, first single-pole disconnecting switch, second single-pole disconnecting switch, current transformer, single-phase circuit breaker, third single-pole disconnecting switch, fourth single-pole disconnecting switch, second lightning arrester, second voltage transformer and multiple incoming and outgoing lines;The first lightning arrester and the first voltage transformer are connected with the one end of first single-pole disconnecting switch, and the other end of first single-pole disconnecting switch is connected with the one end of first pipe type bus, and the other end of first pipe type bus is connected with the one end of second single-pole disconnecting switch, and the other end of second single-pole disconnecting switch is connected with the one end of current transformer, and the other end of current transformer is connected with the one end of single-phase circuit breaker, and the other end of single-phase circuit breaker is connected with the one end of third single-pole disconnecting switch, and the other end of third single-pole disconnecting switch is connected with the one end of second pipe type bus, and the other end of second pipe type bus is connected with the one end of fourth single-pole disconnecting switch, and the other end of fourth single-pole disconnecting switch is connected with second lightning arrester and second voltage transformer respectively;Each incoming and outgoing line includes first switch and second switch, and is connected with first pipe type bus through first switch or second pipe type bus through second switch.

[0005] Further, the first single-pole disconnecting switch and the fourth single-pole disconnecting switch each include two grounding knives, and the second single-pole disconnecting switch and the third single-pole disconnecting switch each include one grounding knife.

[0006] The utility model discloses a switch station electrical equipment arrangement structure, and electrical equipment is three groups, corresponding three phase of three phase electricity, and each group of electrical equipment includes the first pipe type busbar and the second pipe type busbar of parallel arrangement, and each group of electrical equipment still includes first lightning arrester, first voltage transformer, first single pole disconnecting switch, second single pole disconnecting switch, current transformer, single phase circuit breaker, third single pole disconnecting switch, second incoming line, fourth single pole disconnecting switch, second lightning arrester, second voltage transformer and multiple groups of incoming line, and the single phase circuit breaker, lightning arrester and voltage transformer are arranged at the end of pipe type busbar, thereby saving the number of incoming line, and the overall length of pipe type busbar is reduced, thereby solve the problem of the large floor area of the existing switch station. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 It is the utility model provides a kind of switch station electrical equipment arrangement structure in each group of electrical equipment connection relationship schematic diagram in it;

[0008] Wherein, 1 indicates first lightning arrester, 2 indicates first voltage transformer, 3 indicates first single pole disconnecting switch, 4 indicates first pipe type busbar, 5 indicates second single pole disconnecting switch, 6 indicates current transformer, 7 indicates single phase circuit breaker, 8 indicates third single pole disconnecting switch, 9 indicates second pipe type busbar, 10 indicates fourth single pole disconnecting switch, 11 indicates second voltage transformer, 12 indicates second lightning arrester, 13 and 14 respectively indicate the first switch and second switch of first group of incoming line, 15 and 16 respectively indicate the first switch and second switch of second group of incoming line. DETAILED DESCRIPTION

[0009] The utility model provides a kind of switch station electrical equipment arrangement structure, and electrical equipment is three groups, corresponding three phase of three phase electricity, and each group of electrical equipment, such as Figure 1As shown, it comprises the first tubular busbar 4 and the second tubular busbar 9 arranged in parallel, the first arrester 1, the first voltage transformer 2, the first single-pole disconnector 3, the second single-pole disconnector 5, the current transformer 6, the single-phase circuit breaker 7, the third single-pole disconnector 8, the fourth single-pole disconnector 10, the second arrester 12, the second voltage transformer 11 and a plurality of groups of incoming and outgoing lines; the first arrester 1 and the first voltage transformer 2 are connected to one end of the first single-pole disconnector 3, the other end of the first single-pole disconnector 3 is connected to one end of the first tubular busbar 4, the other end of the first tubular busbar 4 is connected to one end of the second single-pole disconnector 5, the other end of the second single-pole disconnector 5 is connected to one end of the current transformer 6, the other end of the current transformer 6 is connected to one end of the single-phase circuit breaker 7, the other end of the single-phase circuit breaker 7 is connected to one end of the third single-pole disconnector 8, the other end of the third single-pole disconnector 8 is connected to one end of the second tubular busbar 9, the other end of the second tubular busbar 9 is connected to one end of the fourth single-pole disconnector 10, and the other end of the fourth single-pole disconnector 10 is connected to the second arrester 12 and the second voltage transformer 11 respectively; each group of incoming and outgoing lines comprises a first switch and a second switch, and is connected to the first tubular busbar 4 through the first switch or to the second tubular busbar 9 through the second switch.

[0010] Specifically, there are two groups of incoming and outgoing lines, the first group of incoming and outgoing lines comprises the first switch 13 and the second switch 14, the second group of incoming and outgoing lines comprises the first switch 15 and the second switch 16, the first group of incoming and outgoing lines is connected to the first tubular busbar 4 through the first switch 13 or to the second tubular busbar 9 through the second switch 14, and the second group of incoming and outgoing lines is connected to the first tubular busbar 4 through the first switch 15 or to the second tubular busbar 9 through the second switch 16.

[0011] Further, the first switch and the second switch in each group of incoming and outgoing lines are single-pole disconnectors.

[0012] The number of grounding knives of the single-pole disconnector is set according to the maintenance requirements, which facilitates grounding of the tubular busbar and ensures safety in maintenance, for example, the first single-pole disconnector and the fourth single-pole disconnector each contain two grounding knives, the second single-pole disconnector and the third single-pole disconnector each contain one grounding knife, and the single-pole disconnectors in the incoming and outgoing lines each contain two grounding knives.

[0013] Further, the busbar is supported by the single-level disconnector, so that the construction of the tubular busbar support column can be reduced.

[0014] In general, the spacing between the two groups of connected incoming and outgoing lines is not less than 15 meters.

Claims

1. Arrangement of electrical devices of a switchyard, said electrical devices being in three groups, one for each phase of a three-phase electric power, each group of electrical devices comprising a first tubular busbar and a second tubular busbar arranged side by side, characterized in that, Each group of electrical equipment further comprises a first lightning arrester, a first voltage transformer, a first single-pole disconnector, a second single-pole disconnector, a current transformer, a single-phase circuit breaker, a third single-pole disconnector, a fourth single-pole disconnector, a second lightning arrester, a second voltage transformer and a plurality of groups of incoming and outgoing lines; the first lightning arrester and the first voltage transformer are both connected to one end of the first single-pole disconnector, the other end of the first single-pole disconnector is connected to one end of a first tubular bus, the other end of the first tubular bus is connected to one end of the second single-pole disconnector, the other end of the second single-pole disconnector is connected to one end of the current transformer, the other end of the current transformer is connected to one end of the single-phase circuit breaker, the other end of the single-phase circuit breaker is connected to one end of the third single-pole disconnector, the other end of the third single-pole disconnector is connected to one end of a second tubular bus, the other end of the second tubular bus is connected to one end of the fourth single-pole disconnector, the other end of the fourth single-pole disconnector is connected to the second lightning arrester and the second voltage transformer respectively; each group of incoming and outgoing lines comprises a first switch and a second switch, and is connected to the first tubular bus through the first switch or to the second tubular bus through the second switch.

2. Switching station electrical equipment arrangement according to claim 1, characterized in that, The first single-pole disconnector and the fourth single-pole disconnector each comprise two grounding knives, and the second single-pole disconnector and the third single-pole disconnector each comprise one grounding knife.

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