Uninterruptible power emergency distribution board for power supply test of emergency generator

Abstract

The utility model relates to an uninterruptible emergency distribution board for an emergency generator power supply test, which comprises a busbar, a main distribution board power supply end connected with the busbar, an emergency generator power supply end and a load, the load is divided into a test load and a non-test load, and an interconnection switch is arranged on the busbar between the test load and the non-test load; the test load is a load which is not used during normal sailing, and the test load is arranged between the power supply end of the emergency generator and the interconnection switch on the busbar; the non-test load is arranged at the other end of the interconnection switch, and the connection point of the power supply end of the main distribution board on the busbar is located between the interconnection switch and the non-test load. According to the utility model, the design of the emergency distribution board is optimized, the interconnection switch is additionally arranged on the bus bar of the emergency distribution board, the load is supplied with power in a classified and partitioned manner, the emergency generator test can be carried out in a DEAD BUS area, the normal power supply of the main bus bar of the emergency distribution board is not influenced, and the uninterruptible power test of the emergency generator is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of ship power distribution, and particularly relates to an emergency switchboard for emergency generator power supply test without power interruption. Background Art

[0002] In the case of a failure in the main power supply system, the emergency switchboard is powered by an emergency generator, and the electric energy is distributed to the emergency switchboard to supply power to the loads in the emergency state.

[0003] To ensure that the functions of the emergency power generation and the emergency switchboard can be used normally in the emergency state, the emergency generator needs to be tested regularly during normal navigation. The test periods of the emergency generator power supply vary, for example, once a week or once a month. Usually, in the overall ship power distribution design, when the emergency generator supplies power to the emergency switchboard, the power supply of the main power supply needs to be disconnected, and there will be a short power interruption process on the ship, which brings a lot of inconvenience to the crew's life. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the problems existing in the above-mentioned prior art, and provide an emergency switchboard for emergency generator power supply test without power interruption.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An emergency switchboard for emergency generator power supply test without power interruption, including a busbar, a main switchboard power supply end, an emergency generator power supply end and loads connected to the busbar. It is characterized in that the loads are divided into test loads and non-test loads, and a tie switch is arranged on the busbar between the test loads and the non-test loads;

[0007] The test loads are the loads not used during normal navigation, and the test loads are arranged on the busbar between the emergency generator power supply end and the tie switch; the non-test loads are arranged at the other end of the tie switch, and the connection point of the main switchboard power supply end on the busbar is located between the tie switch and the non-test loads.

[0008] As a preferred embodiment, the main switchboard is connected to the busbar through a first switch as the main switchboard power supply end; the emergency generator is connected to the busbar through a second switch as the emergency generator power supply end.

[0009] As a preferred embodiment, the rated current of the tie switch is the same as the rated current of the second switch.

[0010] As a preferred embodiment, the test loads are selected from emergency fire pumps, lifeboats, turbine air compressors, and AC 440V loads not used during navigation.

[0011] As a preferred embodiment, the non-test load includes a charge and discharge board, a hybrid system UPS, a steering gear, and a compressor.

[0012] As a preferred embodiment, the non-test load further includes an emergency generator and an AC 220V load.

[0013] As a preferred embodiment, the rated current of the first switch is greater than that of the second switch.

[0014] The utility model optimizes the design of the emergency distribution board, adds a tie switch on the busbar of the emergency distribution board, and classifies and partitions the power supply for the loads. By disconnecting the tie switch, the emergency generator switch is connected to the test load and disconnected from the main busbar of the emergency distribution board, forming a dead busbar. The emergency generator test can be carried out in the dead busbar area without affecting the normal power supply of the main busbar of the emergency distribution board. During the test, the main power supply is normally powered, realizing the uninterrupted power test of the emergency generator. Description of the Drawings

[0015] Figure 1 is the single-line diagram of the emergency distribution board of the utility model;

[0016] In the figure: 1. First switch; 2. Second switch; 3. Tie switch; 4. Test load; 5. Non-test load; 51. Emergency transformer; 52. AC 220V load; 6. Emergency power generation panel; 7. 440V power supply panel; 8. 220V power supply panel; 9. Busbar; 100. Emergency distribution board. Detailed Embodiment

[0017] The technical solution of the utility model will be further elaborated below in conjunction with the description of the drawings and the detailed embodiment.

[0018] As Figure 1 shown, the emergency distribution board 100 of the utility model includes a busbar 9, and the busbar 9 is connected to loads and power sources. The main switchboard MSB is connected to the busbar through a first switch 1 (rated current 630A) to supply power to the loads; the emergency generator EG (200kW) is connected to the busbar through a second switch 2 (ACB 400A) to supply power to the loads.

[0019] Among them, the loads are divided into a test load 4 and a non-test load 5. The test load 4 is arranged on the busbar 9 on the side close to the second switch 2, between the tie switch 3 and the second switch 2, and the non-test load 5 is arranged on the other side of the tie switch 3. The connection point of the first switch 1 on the busbar 9 is arranged between the tie switch 3 and the non-test load 5. The introduced tie switch has a rated current of 400A, which is the same as that of the second switch 2.

[0020] In this embodiment, the test load 4 can be one or more of a lifeboat, an emergency fire pump, a screen projection air compressor, and an AC 440 load not used during normal navigation. Loads that must be used during normal navigation cannot be used in the test load 4. The non-test load 5 includes loads used during normal navigation and may also include loads not used during normal navigation. For example, the non-test load at least includes necessary loads such as a charge and discharge board, a hybrid system UPS, a steering gear, and a compressor during normal navigation. For the AC 220 load 52, whether it is a necessary load during navigation or not, it is generally not used as a test load. Otherwise, an emergency transformer 51 (AC450V / 230V) needs to be additionally connected for voltage transformation to adapt to the AC 220V load.

[0021] When the distribution board is used for emergency power generation testing, the tie switch 3 is directly disconnected. After 45 seconds, the emergency generator starts, and the second switch 2 closes to supply power to the emergency distribution board 100, and check whether the parameters of the test load 4 meet the requirements; during the test, the first switch 1 does not need to be closed, that is, the main distribution board does not need to be powered off, and the ship can maintain normal navigation without power interruption during the test.

Claims

1. An emergency switchboard with uninterrupted power supply during emergency generator power supply testing, comprising a busbar (9), a main switchboard power supply terminal connected to the busbar (9), an emergency generator power supply terminal and a load, characterized in that: The load is divided into a test load (4) and a non-test load (5), and a tie switch (3) is provided on the bus (9) between the test load (4) and the non-test load (5); The test load (4) is a load not used during normal navigation, and is arranged on the busbar (9) between the emergency generator power supply end and the tie switch (3); the non-test load (5) is arranged at the other end of the tie switch (3), and the connection point of the main switchboard power supply end on the busbar is located between the tie switch (3) and the non-test load (5).

2. The emergency switchboard according to claim 1, characterized in that: The main switchboard is connected to the busbar via a first switch (1) to serve as the main switchboard power supply end; the emergency generator is connected to the busbar via a second switch (2) to serve as the emergency generator power supply end.

3. The emergency switchboard according to claim 2, characterized in that: The rated current of the tie switch (3) is consistent with the rated current of the second switch (2).

4. The emergency switchboard according to claim 1, characterized in that: The test load (4) is selected from an emergency fire pump, a lifeboat, a turbine air compressor, and an AC 440V load not used during navigation.

5. The emergency switchboard according to claim 1, characterized in that: The non-test load (5) includes a charging and discharging board, a hybrid system UPS, a steering gear, and a compressor.

6. The emergency switchboard according to claim 5, characterized in that: The non-test load (5) also includes an emergency generator (51) and an AC 220V load.

7. The emergency switchboard according to claim 2, characterized in that: The rated current of the first switch (1) is greater than the rated current of the second switch (2).

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