CN213072207U - Double-bus control system of high-voltage diesel generator set of data center - Google Patents

Double-bus control system of high-voltage diesel generator set of data center Download PDF

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Publication number
CN213072207U
CN213072207U CN202021089776.2U CN202021089776U CN213072207U CN 213072207 U CN213072207 U CN 213072207U CN 202021089776 U CN202021089776 U CN 202021089776U CN 213072207 U CN213072207 U CN 213072207U
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diesel generator
bus
oil engine
generator set
groups
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刘斌
迟伟国
陆樱珠
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Cloud Frame Co ltd
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Cloud Frame Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

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  • Stand-By Power Supply Arrangements (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

The utility model provides a double-bus control system of a data center high-pressure diesel generating set.A G1 diesel generator is respectively connected with two groups of oil engine buses through two groups of leads, and each group of leads is respectively provided with at least two switching-on/off gates connected with a G1 diesel generating set PLC; the G2 diesel generator is respectively connected with two groups of oil engine buses through two groups of leads, each group of leads is respectively provided with at least two on-off gates connected with the G2 diesel generator set PLC, and the G1 diesel generator set PLC is in communication connection with the G2 diesel generator set PLC; each group of machine room loads are respectively connected with a commercial power and a group of oil engine buses, and the commercial power buses and the oil engine buses are interlocked electrically; the two groups of machine room loads are connected through the bus coupler M1 circuit breaker, the two groups of diesel generator set PLCs are in communication connection, and the control of the diesel generator set PLCs on the brake separating is realized, so that the power supply of the diesel generator set is realized when the commercial power is abnormal, the power supply of the machine room loads is ensured, and the machine room loads automatically shift to the standby state when the commercial power is recovered.

Description

Double-bus control system of high-voltage diesel generator set of data center
Technical Field
The utility model relates to a high pressure diesel generating set double bus control field especially relates to a data center high pressure diesel generating set double bus control system.
Background
THE international general certification standard follows THE 'THE UPTIME INSTITUTE data center grade standard', establishes four different definitions (TierI, TierII, TierIII and TierIV) of a data center machine room load infrastructure Tier classification, provides an availability grade index of a machine room load project to be matched with THE TierI, and definitely requires that a grade TierIII or TierIV diesel generator set system, a power path and other supporting elements meet THE requirements of parallel maintenance or fault tolerance when THE machine room load is operated by THE diesel generator set power.
The two diesel generating set PLCs and the centralized control PLC are conventionally configured on a double-bus power path, some parts of the system are repeatedly configured, the failure rate and the project cost expense of the system can be increased, when the two diesel generating set PLCs and the centralized control PLC are involved in and bear the work of the failed parts, the communication data of the two diesel generating set PLCs and the centralized control PLC are complex, and the failure time of the system can be increased.
SUMMERY OF THE UTILITY MODEL
The application provides a double-bus control system of a high-voltage diesel generator set of a data center, which ensures that a machine room load supplies power when commercial power is abnormal and automatically switches to a standby state when the commercial power is recovered; in order to realize the purpose, the following technical scheme is adopted: the method comprises the following steps: the system comprises a G1 diesel generator, a G1 diesel generator set PLC, a G2 diesel generator, a G2 diesel generator set PLC, two groups of machine room loads, a GA1 oil engine bus and a GB1 oil engine bus, wherein the G1 diesel generator is respectively connected with the GA1 oil engine bus and the GB1 oil engine bus through two groups of conducting wires, and each group of conducting wires is respectively provided with at least two closing and opening brakes connected with the G1 diesel generator set PLC; the G2 diesel generator is respectively connected with two groups of oil engine buses through two groups of leads, each group of leads is respectively provided with at least two on-off gates connected with the G2 diesel generator set PLC, and the G1 diesel generator set PLC is in communication connection with the G2 diesel generator set PLC; each group of machine room loads are respectively connected with a commercial power and a group of oil engine buses, and the commercial power buses and the oil engine buses are interlocked electrically; and the two groups of machine room loads are connected through a bus coupler M1 circuit breaker.
Preferably, the G1 diesel generator set PLC is connected with the G1 diesel generator and the GA1 oil engine bus through two groups of voltage transformers, so that the voltage and current detection is realized.
Preferably, a lead of a G1 diesel generator and a GA1 diesel generator bus is provided with a G1A switching on and off brake and a G11A switching on and off brake; and G1B switching on and off and G11B switching on and off are arranged on the lead of the G1 diesel generator and GB1 oil engine bus.
Preferably, the G2 diesel generator set PLC is connected with the G2 diesel generator and the GB1 oil engine bus through two groups of voltage transformers, so that the voltage and current detection is realized.
Preferably, a lead of a G2 diesel generator and a GA1 diesel generator bus is provided with a G2A switching on and off brake and a G21A switching on and off brake; and G2B switching on and off and G21B switching on and off are arranged on the lead of the G2 diesel generator and GB1 oil engine bus.
Preferably, in the two sets of machine room loads, the first machine room load is connected with the commercial power a-way bus and the GA1 oil engine bus, and the commercial power a-way bus and the GA1 oil engine bus are interlocked with each other through the circuit breaker M1A and the circuit breaker MG 1A.
Preferably, in the two groups of machine room loads, the second machine room load is connected with the commercial power B-path bus and the GB1 oil engine bus, and the commercial power B-path bus and the GB1 oil engine bus are interlocked with each other through the circuit breaker M1B and the circuit breaker MG 1B.
This patent application can be according to the commercial power loss of power, whole unit delay starts, at first start the breaker combined floodgate on the normal unit control corresponds double bus, it is normal earlier like G1 diesel generator, G1A closes the separating brake this moment, G1B closes the separating brake simultaneously and closes, the G11A that closes the floodgate again delays time, G11B closes the separating brake, wherein G1A closes the separating brake, G1B closes the separating brake, G11A closes the separating brake, G11B closes the separating brake and feeds back closing signal to G1 diesel generating set PLC, GA1 oily machine bus, GB1 oily machine bus has got the electricity.
Other units (taking G2 diesel generators as an example) detect the bus voltage power supply environment, track the bus state in real time and adjust the power supply output conditions of the units, and when the synchronous state is reached, control G2A brake on and off and G2B brake on and off at the same time, delay reclosing G21A brake on and off and G21B brake on and off, wherein G2A brake on and off, G2B brake on and off, G21A brake on and off and G21 brake on and off B feed back a closing signal to a G2 diesel generator set PLC, and the synchronous operation with the G1 diesel generators is kept for outputting electric power.
When a load is connected, the multiple units regulate the local machine to equally divide the load, the diesel generators PLC communicate with each other through the CAN, and other diesel generator control systems CAN acquire related parameters at any time, so that the system CAN be automatically ensured to continuously and normally work under the condition of no need of manual intervention; when the commercial power is recovered (or the shutdown signal) occurs, a control system sends out a signal of disconnecting all circuit breakers, the unit enters a delayed shutdown state (forced unit cooling), the shutdown is finished after the delay, and the automatic standby mode is automatically switched to.
The utility model has the advantages that: communication connection between two sets of diesel generating set PLC, and through the control of diesel generating set PLC to and the separating brake, realize utilizing diesel generator power supply when the commercial power is unusual, guarantee the power supply of computer lab load to automatic the change over to standby state when the commercial power resumes, communication is simple, convenient operation.
Drawings
Fig. 1 is a control schematic diagram of the present invention.
Detailed Description
As shown in fig. 1, the present invention includes: the system comprises a G1 diesel generator, a G1 diesel generator set PLC, a G2 diesel generator, a G2 diesel generator set PLC, two groups of machine room loads, a GA1 oil engine bus and a GB1 oil engine bus, wherein the G1 diesel generator is respectively connected with the GA1 oil engine bus and the GB1 oil engine bus through two groups of conducting wires, and each group of conducting wires is respectively provided with at least two closing and opening switches connected with the G1 diesel generator set PLC; the G2 diesel generator is respectively connected with the GA1 oil engine bus and the GB1 oil engine bus through two groups of leads, each group of leads is respectively provided with at least two on-off gates connected with the G2 diesel generator set PLC, and the G1 diesel generator set PLC is in communication connection with the G2 diesel generator set PLC; the two groups of machine room loads are a first machine room load and a second machine room load, the first machine room load is connected with a commercial power A-way bus and a GA1 oil engine bus, and the commercial power A-way bus and the GA1 oil engine bus are interlocked through a circuit breaker M1A and a circuit breaker MG 1A; the second machine room load is connected with a commercial power B-path bus and a GB1 oil engine bus, and the commercial power B-path bus and the GB1 oil engine bus are interlocked through a circuit breaker M1B and a circuit breaker MG 1B; and the two groups of machine room loads are connected through a bus coupler M1 circuit breaker.
Preferably, the G1 diesel generator set PLC is connected with the G1 diesel generator and the GA1 oil engine bus through two groups of voltage transformers, so that the voltage and current detection is realized.
Preferably, a lead of a G1 diesel generator and a GA1 diesel generator bus is provided with a G1A switching on and off brake and a G11A switching on and off brake; and G1B switching on and off and G11B switching on and off are arranged on the lead of the G1 diesel generator and GB1 oil engine bus.
Preferably, the G2 diesel generator set PLC is connected with the G2 diesel generator and the GB1 oil engine bus through two groups of voltage transformers, so that the voltage and current detection is realized.
Preferably, a lead of a G2 diesel generator and a GA1 diesel generator bus is provided with a G2A switching on and off brake and a G21A switching on and off brake; and G2B switching on and off and G21B switching on and off are arranged on the lead of the G2 diesel generator and GB1 oil engine bus.
With the structure, when the commercial power is abnormal, the following operations are carried out:
firstly, when the commercial power A and the commercial power B are both power-off:
s1, when the commercial power A and the commercial power B are abnormal, namely the voltage or the frequency of two commercial power supplies does not meet the normal condition of the power supply (the lower limit value of the normal voltage is less than the voltage of the commercial power supply is less than the upper limit value of the normal voltage, the lower limit value of the normal frequency is less than the frequency of the commercial power supply is less than the upper limit value of the normal frequency), judging that the two commercial power are abnormal; after the start of the oil engine is delayed, the commercial power A and the commercial power B are still abnormal, and the background monitoring system sends an oil engine start signal to the generator control system and keeps the signals;
s2, starting the oil engine by a PLC (programmable logic controller) of the G1 diesel generator set and a PLC control system of the G2 diesel generator set, and controlling the on-off of the generator which firstly reaches the voltage and frequency conditions (if G1 is firstly normal), wherein the PLC of the G1 diesel generator set outputs the closing signals of G1A on-off and G1B on-off, and the closing states of G1A on-off and G1B on-off are fed back to the PLC of the G1 diesel generator set; and after the G1 diesel generator set PLC confirms that the switching-on is correct, the G11A switching-on and switching-off and the G11B switching-on and switching-off are delayed, the switching-on states of the G11A switching-on and switching-off and the G11B switching-on and switching-off are fed back to the G1 diesel generator set PLC, and the voltages of the GA1 oil engine bus and the GB1 oil engine bus are detected to be electrified. Then the diesel generator set PLC controls other generator sets to be in parallel to the generator bus one by one through synchronous inspection; meanwhile, the PLC of the diesel generator set sends the generator state number completing parallel operation to a background monitoring system in a mode of a circuit breaker node;
s3, a G1 diesel generator set PLC and a G2 diesel generator set PLC respectively acquire voltage frequencies of a G1 diesel generator and a G2 diesel generator through a PT (voltage transformer) of a double-bus GA1 diesel generator bus and a PT (voltage transformer) of a GB1 diesel generator bus, when a load is connected, the two sets of units adjust the machine to equally divide the load, the diesel generator sets are communicated through a CAN bus, and the other set of diesel generator control system CAN acquire related parameters at any time, so that the system CAN be automatically ensured to continuously and normally work under the condition of no need of manual intervention;
and S4, after the oil engine power supply is judged to be normal, the commercial power supply is still abnormal after the oil engine power supply is stably delayed, and then the process of switching from the commercial power supply to the oil engine power supply is started.
The background monitoring system sequentially sends commands of jumping the M1A circuit breaker and the M1B circuit breaker according to the set importance level of each load outgoing line from the lowest importance to the highest importance, and sequentially jumps off each load outgoing line circuit breaker; and then, the oil engine inlet wire MG1A breaker and the MG1B breaker are switched on successively from the highest importance to the lowest importance according to the received number of the grid-connected generators and the importance level of the outgoing line of the load, wherein the allowed number of the outgoing line breakers carry the first machine room load and the second machine room load.
And after the two mains supplies are abnormal, one of the two mains supplies is recovered to be normal:
(1) and the commercial power A is recovered to be normal, the background monitoring system automatically selects 'the commercial power A is recovered, the commercial power A is recovered to the commercial power supply', the commercial power A is still normal after the stable time delay of the commercial power supply, the background monitoring system automatically executes the sequential cutting of respective bus load outgoing lines according to the importance level, the oil engine power incoming line MG1A circuit breaker and the MG1B circuit breaker are tripped, the commercial power incoming line M1A circuit breaker is closed, the bus union M1 circuit breaker is closed, the load outgoing line circuit breakers of the two sections of buses are sequentially closed, and the first machine room load and the second machine room load are carried by the commercial power A after the completion.
(2) And if the commercial power B is recovered to be normal, the background monitoring system automatically selects 'the commercial power B is recovered, and the commercial power B is recovered to the commercial power supply', the commercial power B is still normal after the stability delay of the commercial power supply, the background monitoring system automatically executes the sequential cutting of respective bus load outgoing lines according to the importance level, the oil engine power incoming line MG1A circuit breaker and the MG1B circuit breaker are tripped, then the commercial power incoming line M1B circuit breaker is closed, then the bus-coupled M1 circuit breaker is closed, then the load outgoing line circuit breakers of the two sections of buses are successively closed, and after the completion, the commercial power B carries the first machine room load and the second machine room load.
(3) And if the two sections of commercial power are recovered simultaneously, still executing the commercial power A recovery step, automatically selecting 'the commercial power A recovery and recovering from the oil engine power supply to the commercial power supply' by the background monitoring system, recovering to the state that the commercial power A carries two sections of bus loads, then manually disconnecting the bus-coupling M1 circuit breaker, then switching on the commercial power inlet M1B circuit breaker, and recovering to the normal operation mode that the two paths of commercial power carry the first machine room load and the second machine room load respectively.
(4) The G1 diesel generator set and the G2 diesel generator set PLC receive a commercial power recovery (or stop signal), the G1 diesel generator set and the G2 diesel generator set PLC send out a brake separating command, firstly, the brake separating G11A closes and separates a brake, the G21A closes and separates a brake, the G11B closes and separates a brake, the G21B closes and separates a brake, the G1 and the G2 diesel generator set PLC determine that the brake separating is correct and then sequentially separate the brake G1A closes and separates the brake, the G2A closes and separates the brake, the G1B closes and separates the brake, the G2B closes and separates the brake, the G1A closes and separates the brake, the G2A closes and separates the brake, the G1B closes and separates the brake, and the G2B closes and separates the brake, and feeds back the brake separating state to the PLC, when all the brake separating is determined, the unit enters a delayed breaking state (forced unit cooling), the delayed stop is finished.
And thirdly, carrying out on-load operation by the diesel generator, and carrying out parallel maintenance or fault tolerance by the diesel generator bus:
(1) and when the two-way commercial power is cut off, all the diesel generator sets are started to be loaded, and the power path of the diesel generator bus needs to be maintained in parallel or fault-tolerant (such as a GA1 oil engine bus). The method comprises the steps that a G1 diesel generator set PLC and a G2 diesel generator set PLC send out brake opening commands, firstly, a brake G11A is opened and closed, a brake G21A is opened and closed, the states of the brake G11A and the brake G21A are fed back to the G1 diesel generator set PLC and the G2 diesel generator set PLC, delay brake opening is carried out after judgment is correct, the brake G1A is opened and closed, the brake G2A is opened and closed, the states of the brake of a circuit breaker on a GA1 oil engine bus are fed back to the PLC, after the brake opening judgment is correct through the open and closed brake on all GA1 buses, a first machine room load and a second machine room load are operated through the G1 diesel generator set PLC and the G2 diesel generator set PLC through the GB1 oil engine bus, and then the GA1 oil.
The above-described embodiments are merely illustrative of the principles and utilities of the present patent application and are not intended to limit the present patent application. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of this patent application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of this patent application.

Claims (7)

1. The utility model provides a two generating line control system of data center high pressure diesel generating set which characterized in that: the method comprises the following steps: the system comprises a G1 diesel generator, a G1 diesel generator set PLC, a G2 diesel generator, a G2 diesel generator set PLC, two groups of machine room loads, a GA1 oil engine bus and a GB1 oil engine bus, wherein the G1 diesel generator is respectively connected with the two groups of oil engine buses through two groups of conducting wires, and each group of conducting wires is respectively provided with at least two closing and opening brakes connected with the G1 diesel generator set PLC; the G2 diesel generator is respectively connected with two groups of oil engine buses through two groups of leads, each group of leads is respectively provided with at least two on-off gates connected with the G2 diesel generator set PLC, and the G1 diesel generator set PLC is in communication connection with the G2 diesel generator set PLC; each group of machine room loads are respectively connected with a commercial power and a group of oil engine buses, and the commercial power buses and the oil engine buses are interlocked electrically; and the two groups of machine room loads are connected through a bus coupler M1 circuit breaker.
2. The double-bus control system of the data center high-voltage diesel generator set according to claim 1, characterized in that: the G1 diesel generator set PLC is connected with the G1 diesel generator and the GA1 oil engine bus through two groups of voltage transformers, and voltage and current detection is achieved.
3. The double-bus control system of the data center high-voltage diesel generator set according to claim 1, characterized in that: the lead of the G1 diesel generator and GA1 oil engine bus is provided with a G1A switching on and off brake and a G11A switching on and off brake; and G1B switching on and off and G11B switching on and off are arranged on the lead of the G1 diesel generator and GB1 oil engine bus.
4. The double-bus control system of the data center high-voltage diesel generator set according to claim 1, characterized in that: the G2 diesel generator set PLC is connected with the G2 diesel generator and the GB1 oil engine bus through two groups of voltage transformers, and voltage and current detection is achieved.
5. The double-bus control system of the data center high-voltage diesel generator set according to claim 1, characterized in that: the lead of the G2 diesel generator and GA1 oil engine bus is provided with a G2A switching on and off brake and a G21A switching on and off brake; and G2B switching on and off and G21B switching on and off are arranged on the lead of the G2 diesel generator and GB1 oil engine bus.
6. The double-bus control system of the data center high-voltage diesel generator set according to claim 1, characterized in that: in the two groups of machine room loads, the first machine room load is connected with a commercial power A-way bus and a GA1 oil engine bus, and the commercial power A-way bus and the GA1 oil engine bus are interlocked through a circuit breaker M1A and a circuit breaker MG 1A.
7. The double-bus control system of the data center high-voltage diesel generator set according to claim 1, characterized in that: in the two groups of machine room loads, the second machine room load is connected with the B-path bus of the commercial power and the GB1 oil engine bus, and the B-path bus of the commercial power and the GB1 oil engine bus are interlocked through a circuit breaker M1B and a circuit breaker MG 1B.
CN202021089776.2U 2020-06-12 2020-06-12 Double-bus control system of high-voltage diesel generator set of data center Active CN213072207U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021089776.2U CN213072207U (en) 2020-06-12 2020-06-12 Double-bus control system of high-voltage diesel generator set of data center

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021089776.2U CN213072207U (en) 2020-06-12 2020-06-12 Double-bus control system of high-voltage diesel generator set of data center

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CN213072207U true CN213072207U (en) 2021-04-27

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