Universal diesel generating set load consumption system

Abstract

The utility model provides a universal diesel generating set load consumption system. The universal diesel generating set load consumption system comprises a generator switch cabinet, a bus conversion cabinet, a high-voltage load consumption assembly and a low-voltage load consumption assembly, one end of each generator switch cabinet is connected to a switching interface of the bus conversion cabinet, diesel generator sets of different voltage levels can be correspondingly connected to the corresponding generator switch cabinets, and the first load consumption end of the bus conversion cabinet is connected to the high-voltage load consumption assembly. And the second load consumption end of the bus conversion cabinet is connected to the low-voltage load consumption assembly, so that the bus conversion cabinet is switched to any generator switch cabinet and any load consumption end to form a test run test load circuit of the diesel generating set. The utility model relates to the technical field of diesel generating set tests, and can solve the problem that test run test load systems need to be configured respectively according to different voltage levels in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel generator set testing, in particular to a universal diesel generator set load consumption system. Background Art

[0002] 8MW medium-speed diesel generator sets have broad application prospects in land-based power plants, nuclear power plants and other fields. The power generation voltage of the 12PC26B medium-speed diesel generator set is 10KV, while the power generation voltage of the 12MV390 medium-speed diesel generator set is 10.5KV. Therefore, the test load system of the diesel generator set needs to meet the test applications of two voltage levels at the same time.

[0003] The test load system of the prior art needs to be configured according to two voltage levels, which is expensive and inconvenient to use. Therefore, it is necessary to provide a universal diesel generator set load consumption system that can solve the problem that the test load system needs to be configured according to different voltage levels in the prior art. Utility Model Content

[0004] The utility model aims to provide a universal diesel generator set load consumption system, which can solve the problem in the prior art that a test load system needs to be configured according to different voltage levels.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A universal diesel generator set load consumption system comprises: a generator switch cabinet, a bus conversion cabinet, a high-voltage load consumption component and a low-voltage load consumption component; one end of a plurality of generator switch cabinets are respectively connected to the switching interface of the bus conversion cabinet, and diesel generator sets of different voltage levels can be correspondingly connected to the corresponding generator switch cabinets, a first load consumption end of the bus conversion cabinet is connected to the high-voltage load consumption component, and a second load consumption end of the bus conversion cabinet is connected to the low-voltage load consumption component, so that a test load circuit of the diesel generator set is formed after the bus conversion cabinet is switched to any generator switch cabinet and any load consumption end.

[0007] The several generator switch cabinets include a first generator switch cabinet and a second generator switch cabinet connected to the busbar conversion cabinet. The first generator switch cabinet corresponds to an 8MW class 10KV diesel generator set, and the second generator switch cabinet corresponds to an 8MW class 10.5KV diesel generator set.

[0008] The busbar conversion cabinet is provided with two-input and one-output copper busbar connection terminals, wherein the two input terminals are respectively connected to the first generator switch cabinet and the second generator switch cabinet, and one output terminal is connected to the high-voltage load consumption component and the low-voltage load consumption component; when testing the 8MW 10KV diesel generator set, the circuit breaker and voltage transformer trolley in the first generator switch cabinet are in the on state, and the circuit breaker and voltage transformer trolley in the second generator switch cabinet are in the outgoing state; when switching to the 8MW 10.5KV diesel generator set test, the circuit breaker and voltage transformer trolley in the first generator switch cabinet are switched to the outgoing state, and the circuit breaker and voltage transformer trolley in the second generator switch cabinet are switched to the on state.

[0009] Each of the generator switch cabinets is equipped with a first voltage transformer and a first current transformer; the first voltage transformer is used for voltage measurement and protection monitoring, and the first current transformer is used for differential protection and current measurement and monitoring; each generator switch cabinet is provided with local and remote centralized control opening and closing buttons and indicator lights.

[0010] The high-voltage load consumption component comprises a load box protection cabinet and a high-voltage load box, and the first load consumption end of the busbar conversion cabinet is connected to the high-voltage load box through the load box protection cabinet.

[0011] The high-voltage load box is configured with a first resistive load and a first inductive load, and the high-voltage load box is configured with a first host computer interface. The ratio of the first resistive load and the first inductive load is configured through the first host computer interface to adjust the power factor; a second voltage transformer is provided in the load box protection cabinet for monitoring and protecting the power generation voltage and current, so that when a fault occurs in the high-voltage load box, the load box protection cabinet can protect the high-voltage load box.

[0012] The load box protection cabinet is provided with local and remote centralized control opening and closing buttons and indicator lights, and the high-voltage load box is provided with a local / remote control switch.

[0013] The low-voltage load consumption component comprises a transformer protection cabinet, a transformer and a low-voltage load box; the second load consumption end of the busbar conversion cabinet is connected to the low-voltage load box through the transformer protection cabinet and the transformer.

[0014] The low-voltage load box is provided with a second resistive load and a second inductive load, and the second low-voltage load box is provided with a second host computer interface, through which the ratio of the second resistive load and the second inductive load is configured to adjust the power factor; the transformer protection cabinet is provided with a third voltage transformer for monitoring and protecting the generated voltage and current, so that when a transformer fails, the transformer protection cabinet can protect the transformer.

[0015] The transformer protection cabinet is provided with local and remote centralized control opening and closing buttons and indicator lights, and the low-voltage load box is provided with a local / remote control switch.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The utility model is provided with a busbar conversion cabinet and a generator switch cabinet. The corresponding generator switch cabinets are configured according to the diesel generator sets of different voltage levels. During the test run, the busbar conversion cabinet is used to realize the rapid switching of the corresponding generator switch cabinets, thereby realizing the universal use of diesel generator sets of different voltage levels.

[0018] 2. The utility model is provided with a bus conversion cabinet, a high-voltage load consumption component and a low-voltage load consumption component. The bus conversion cabinet is connected to the high-voltage load consumption component and the low-voltage load consumption component through the first load consumption end and the second load consumption end respectively. During the commissioning test, the bus conversion cabinet is used to realize rapid switching of the corresponding load capacity according to the test output power demand, thereby realizing universal rapid switching of low-voltage and high-voltage loads, and can meet the flexible setting requirements of the test power factor of the diesel generator set.

[0019] 3. The utility model can meet the test requirements of diesel generator sets with different power generation voltages and different output powers through a universal switching design, thereby reducing the investment in test equipment and improving the test efficiency. It can be applied to the test of diesel generator sets for ships, nuclear power and land-based power stations, such as load mutation tests, load loading tests, load margin tests, etc. It has the advantages of simple operation, reliable operation and improved test efficiency.

[0020] 4. Since the utility model is provided with a first voltage transformer, a first current transformer, a second voltage transformer and a third voltage transformer, it can protect and monitor the generator switch cabinet, transformer and high-voltage load box during the test of the diesel generator set, thereby ensuring the test safety and reliability of the diesel generator set. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects, features and advantages of the present disclosure will become more apparent through a more detailed description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present disclosure.

[0022] Figure 1 This is a system block diagram of the utility model universal diesel generator set load consumption system;

[0023] Figure 2 It is a loading interface diagram of low-voltage and high-voltage load configurations in a load consumption system of a universal diesel generator set of the utility model.

[0024] In the figure, 1 is a busbar conversion cabinet, 2 is a diesel generator set, 301 is a first generator switch cabinet, 302 is a second generator switch cabinet, 303 is a first voltage transformer, 304 is a first current transformer, 401 is a load box protection cabinet, 402 is a high-voltage load box, 403 is a second voltage transformer, 501 is a transformer protection cabinet, 502 is a transformer, 503 is a low-voltage load box, and 504 is a third voltage transformer. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the universal diesel generator set load consumption system proposed by the utility model in combination with the accompanying drawings and specific embodiments. The advantages and features of the utility model will become clearer according to the following description and claims. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model.

[0026] Please see attached Figure 1 A universal diesel generator set load consumption system comprises a generator switch cabinet, a bus conversion cabinet 1, a high-voltage load consumption component and a low-voltage load consumption component; one end of a plurality of generator switch cabinets are respectively connected to the switching interface of the bus conversion cabinet 1, and diesel generator sets 2 of different voltage levels can be connected to the corresponding generator switch cabinets accordingly, the first load consumption end of the bus conversion cabinet 1 is connected to the high-voltage load consumption component, and the second load consumption end of the bus conversion cabinet 1 is connected to the low-voltage load consumption component, so that the bus conversion cabinet 1 is switched to any generator switch cabinet and any load consumption end to form a test load circuit of the diesel generator set 2.

[0027] Usually, the diesel generator set 2 includes 8MW class 10KV and 10.5KV diesel generator sets, which can be configured with two sets of generator switch cabinets accordingly, and the busbar conversion cabinet 1 is used to realize the rapid switching of the 8MW class 10KV and 10.5KV diesel generator sets, so as to realize the universal use of the 8MW class 10KV and 10.5KV diesel generator sets. At the same time, the two load consumption ends of the busbar conversion cabinet 1 are respectively connected to the high-voltage load consumption component and the low-voltage load consumption component, taking into account the compatibility of the high-voltage load and the low-voltage load, and realizing the universal application and rapid switching of the load consumption component.

[0028] Please see attached Figure 1 The several generator switch cabinets include a first generator switch cabinet 301 and a second generator switch cabinet 302 connected to the busbar conversion cabinet 1. The first generator switch cabinet 301 corresponds to a 8MW class 10KV diesel generator set 2, and the second generator switch cabinet 302 corresponds to a 8MW class 10.5KV diesel generator set 2.

[0029] The diesel generator set 2 of the prior art generally includes 8MW-class 10KV and 10.5KV diesel generator sets. In the subsequent diesel generator set tests, corresponding generator switch cabinets can be configured according to diesel generator sets of different power generation voltage levels, and fast switching can be achieved through the busbar conversion cabinet 1. It has high versatility and flexibility, low investment in supporting facilities and is relatively convenient. It improves the test efficiency while ensuring the test of the diesel generator set and saves test costs.

[0030] The busbar conversion cabinet 1 is provided with two-input and one-output copper busbar connection terminals, wherein the two input terminals are respectively connected to the first generator switch cabinet 301 and the second generator switch cabinet 302, and one output terminal is connected to the high-voltage load consumption component and the low-voltage load consumption component; when the 8MW-class 10KV diesel generator set 2 is tested, the circuit breaker and voltage transformer trolley in the first generator switch cabinet 301 are in the on state, and the circuit breaker and voltage transformer trolley in the second generator switch cabinet 302 are in the shake-out state; when switching to the 8MW-class 10.5KV diesel generator set 2 test, the circuit breaker and voltage transformer trolley in the first generator switch cabinet 301 are switched to the shake-out state, and the circuit breaker and voltage transformer trolley in the second generator switch cabinet 302 are switched to the on state.

[0031] The two generator switch cabinets are not operated at the same time. When one of the diesel generator sets 2 is tested, the circuit breaker and voltage transformer trolley in the generator switch cabinet corresponding to the other diesel generator set 2 can be put in the swing-out state. When the two diesel generator sets 2 are switched during the test, it is only necessary to switch the circuit breaker and voltage transformer trolley in the generator switch cabinet, which can realize convenient switching operation.

[0032] Please see attached Figure 1 Each of the generator switch cabinets is equipped with a first voltage transformer 303 and a first current transformer 304; the first voltage transformer 303 is used for voltage measurement and protection monitoring, and the first current transformer 304 is used for differential protection and current measurement and monitoring.

[0033] The first voltage transformer 303 and the first current transformer 304 are provided to protect the generator switch cabinet, thereby ensuring the safety of the test run. It should be noted that the first voltage transformer 303 needs to be configured with a corresponding specification according to the output voltage of the diesel generator set 2.

[0034] The first voltage transformer 303 and the first current transformer 304 can select corresponding types of voltage transformers and current transformers according to actual test requirements. They are commonly used in voltage measurement and protection as well as current measurement and protection in this field, and their working principles and working processes will not be described in detail here.

[0035] Preferably, local and remote centralized control opening and closing buttons and indicator lights can be provided on each of the generator switch cabinets, so that the opening and closing of the generator switch cabinet can be controlled locally / remotely.

[0036] Please see attached Figure 1 The high-voltage load consumption component includes a load box protection cabinet 401 and a high-voltage load box 402 , and the first load consumption end of the busbar conversion cabinet 1 is connected to the high-voltage load box 402 through the load box protection cabinet 401 .

[0037] The first load consumption end of the busbar conversion cabinet 1 is connected to the load box protection cabinet 401, and the output voltage of the diesel generator set 2 is consumed through the high-voltage load box 402 to meet the high-voltage load consumption requirements in the test.

[0038] Preferably, local and remote centralized control opening and closing buttons and indicator lights can be set on the load box protection cabinet 401, and the load box protection cabinet 401 can be opened and closed locally / remotely controlled, which makes the operation more convenient.

[0039] Preferably, a local / remote control switch can be set on the high-voltage load box 402 to realize local load fan start-up and load switching, and a remote host computer can realize remote fan start-up and load switching of the load box. Correspondingly, a load box emergency stop button can be set in the remote control room to realize emergency disconnection of the high-voltage load box 402 in an emergency to ensure the safety and reliability of the test.

[0040] The high-voltage load box 402 is configured with a first resistive load (not shown in the figure) and a first inductive load (not shown in the figure), and the high-voltage load box 402 is configured with a first host computer interface (not shown in the figure). The ratio of the first resistive load and the first inductive load is configured through the first host computer interface to adjust the power factor.

[0041] For example, in a conventional test run of an 8MW diesel generator set 2, the power factor is selected as 0.8. According to the ratio calculation of the first resistive load and the first inductive load, P can be set to 400 (8000KW) and Q to 300 (6000kvar) on the first upper computer interface of the high-voltage load box 402. Figure 2 Preferably, the first upper computer interface can adopt a human-machine device such as a touch screen in the prior art.

[0042] Please see attached Figure 1 The load box protection cabinet 401 is provided with a second voltage transformer 403 for monitoring and protecting the power generation voltage and current, so that when a high-voltage load box 402 fails, the load box protection cabinet 401 can protect the high-voltage load box 402, thereby ensuring the test safety and reliability of the diesel generator set 2.

[0043] The second voltage transformer 403 can select a voltage transformer of a corresponding model according to actual test requirements. It is commonly used in voltage measurement and protection in the field, and its working principle and working process will not be described in detail here.

[0044] Please see attached Figure 1 The low-voltage load consumption component includes a transformer protection cabinet 501, a transformer 502 and a low-voltage load box 503; the second load consumption end of the busbar conversion cabinet 1 is connected to the low-voltage load box 503 through the transformer protection cabinet 501 and the transformer 502.

[0045] The second load consumption end of the busbar conversion cabinet 1 is connected to the transformer protection cabinet 501, and finally the output voltage of the diesel generator set 2 is converted to 0.4KV through the transformer 502, and consumed through the low-voltage load box 503 to meet the low-voltage load consumption requirements in the test. Preferably, the specification model of the transformer 502 can be adaptively selected according to the actual test requirements.

[0046] Preferably, local and remote centralized control opening and closing buttons and indicator lights can be set on the transformer protection cabinet 501, and the opening and closing of the transformer protection cabinet 501 can be controlled locally / remotely, making the operation more convenient.

[0047] Preferably, a local / remote control switch can be set on the low-voltage load box 503 to realize local load fan start-up and load switching, and a remote host computer can realize load box remote fan start-up and load switching. Correspondingly, a load box emergency stop button can be set in the remote control room to realize emergency disconnection of the low-voltage load box 503 in an emergency to ensure the safety and reliability of the test.

[0048] The low voltage load box 503 is provided with a second resistive load and a second inductive load. The second low voltage load box 503 is provided with a second host computer interface. The ratio of the second resistive load and the second inductive load is configured through the second host computer interface to adjust the power factor.

[0049] For example, in the conventional test of the 8MW diesel generator set 2, the power factor is selected as 0.8. According to the ratio calculation of the second resistive load and the second inductive load, P can be set to 400 (8000KW) and Q to 300 (6000kvar) on the second upper computer interface of the high-voltage load box 402. Figure 2 Preferably, the second upper computer interface can adopt a human-machine device such as a touch screen in the prior art.

[0050] Please see attached Figure 1The transformer protection cabinet 501 is provided with a third voltage transformer 504 for monitoring and protecting the power generation voltage and current, so that when the transformer 502 fails, the transformer protection cabinet 501 can protect the transformer 502, thereby ensuring the test safety and reliability of the diesel generator set 2.

[0051] The third voltage transformer 504 can select a voltage transformer of a corresponding model according to actual test requirements. It is commonly used in voltage measurement and protection in the field, and its working principle and working process will not be described in detail here.

[0052] Please see attached Figure 1 and attached Figure 2 Taking the diesel generator set 2 with 8MW class and 10KV power generation voltage as an example, the use method and working principle of the utility model are as follows:

[0053] The diesel generator set 2 with a 8MW class 10KV generating voltage is connected to the first generator switch cabinet 301, and the first generator switch cabinet 301 is connected through the switching function of the busbar conversion cabinet 1. In the commissioning test of the diesel generator set 2 with a 8MW class 10KV generating voltage, low-voltage load consumption is adopted, and the first load consumption end of the busbar conversion cabinet 1 is switched to the transformer protection cabinet 501 of the low-voltage load consumption component.

[0054] The power factor is selected as 0.8. According to the ratio of the second resistive load and the second inductive load, P is set to 400 (8000KW) and Q is set to 300 (6000kvar) on the second upper computer interface of the low-voltage load box 503. Figure 2 As shown, in order to meet the test requirements, the test run test of the diesel generator set 2 with an 8MW class and a 10KV generating voltage can be carried out.

[0055] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A universal diesel generator load consumption system, characterized in that: include: A generator switch cabinet, a busbar conversion cabinet (1), a high-voltage load consumption component and a low-voltage load consumption component; one end of a plurality of generator switch cabinets is respectively connected to a switching interface of the busbar conversion cabinet (1); diesel generator sets (2) of different voltage levels can be connected to the corresponding generator switch cabinets; a first load consumption end of the busbar conversion cabinet (1) is connected to the high-voltage load consumption component; a second load consumption end of the busbar conversion cabinet (1) is connected to the low-voltage load consumption component; after the busbar conversion cabinet (1) is switched to any generator switch cabinet and any load consumption end, a test load circuit of the diesel generator set (2) is formed.

2. The universal diesel generator set load consumption system according to claim 1, characterized in that: The plurality of generator switch cabinets include a first generator switch cabinet (301) and a second generator switch cabinet (302) connected to the busbar conversion cabinet (1); the first generator switch cabinet (301) is connected to a 8MW class 10KV diesel generator set (2) and the second generator switch cabinet (302) is connected to a 8MW class 10.5KV diesel generator set (2).

3. The universal diesel generator set load consumption system according to claim 2, characterized in that: The busbar conversion cabinet (1) is provided with a two-input and one-output copper busbar connection terminal, wherein the two input terminals are respectively connected to the first generator switch cabinet (301) and the second generator switch cabinet (302), and one output terminal is connected to the high-voltage load consumption component and the low-voltage load consumption component; when the 8MW class 10KV diesel generator set (2) is tested, the circuit breaker and the voltage transformer trolley in the first generator switch cabinet (301) are in the on state, and the circuit breaker and the voltage transformer trolley in the second generator switch cabinet (302) are in the shake-out state; when switching to the 8MW class 10.5KV diesel generator set (2) for testing, the circuit breaker and the voltage transformer trolley in the first generator switch cabinet (301) are switched to the shake-out state, and the circuit breaker and the voltage transformer trolley in the second generator switch cabinet (302) are switched to the on state.

4. The universal diesel generator set load consumption system according to claim 1 or 2, characterized in that: Each of the generator switch cabinets is equipped with a first voltage transformer (303) and a first current transformer (304); the first voltage transformer (303) is used for voltage measurement and protection monitoring, and the first current transformer (304) is used for differential protection and current measurement and monitoring; each generator switch cabinet is provided with local and remote centralized control opening and closing buttons and indicator lights.

5. The universal diesel generator set load consumption system according to claim 1, characterized in that: The high-voltage load consumption component comprises a load box protection cabinet (401) and a high-voltage load box (402), and the first load consumption end of the busbar conversion cabinet (1) is connected to the high-voltage load box (402) through the load box protection cabinet (401).

6. The universal diesel generator set load consumption system according to claim 5, characterized in that: The high-voltage load box (402) is provided with a first resistive load and a first inductive load, and the high-voltage load box (402) is provided with a first host computer interface, and the ratio of the first resistive load and the first inductive load is configured through the first host computer interface to adjust the power factor; the load box protection cabinet (401) is provided with a second voltage transformer (403) for monitoring and protecting the generated voltage and current, so that when the high-voltage load box (402) fails, the load box protection cabinet (401) can perform a protective action on the high-voltage load box (402).

7. The universal diesel generator set load consumption system according to claim 5 or 6, characterized in that: The load box protection cabinet (401) is provided with local and remote centralized control opening and closing buttons and indicator lights, and the high-voltage load box (402) is provided with a local / remote control switch.

8. The universal diesel generator set load consumption system according to claim 1, characterized in that: The low-voltage load consumption component comprises a transformer protection cabinet (501), a transformer (502) and a low-voltage load box (503); the second load consumption end of the busbar conversion cabinet (1) is connected to the low-voltage load box (503) through the transformer protection cabinet (501) and the transformer (502).

9. The universal diesel generator set load consumption system according to claim 8, characterized in that: The low-voltage load box (503) is provided with a second resistive load and a second inductive load, and the second low-voltage load box (503) is provided with a second host computer interface, and the ratio of the second resistive load and the second inductive load is configured through the second host computer interface to adjust the power factor; the transformer protection cabinet (501) is provided with a third voltage transformer (504) for monitoring and protecting the generated voltage and current, so that when a transformer (502) fails, the transformer protection cabinet (501) can perform a protective action on the transformer (502).

10. The universal diesel generator set load consumption system according to claim 8 or 9, characterized in that: The transformer protection cabinet (501) is provided with local and remote centralized control opening and closing buttons and indicator lights, and the low voltage load box (503) is provided with a local / remote control switch.

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