An auxiliary power supply method and device for an important system of a small offshore reactor
An auxiliary power supply, small reactor technology, applied in the field of nuclear reactors, can solve the problems of common mode failure, space-limited failure rate, etc.
Active Publication Date: 2021-11-05
CHINA NUCLEAR POWER TECH RES INST CO LTD +2
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Problems solved by technology
[0003] In order to solve the above technical problems, the present invention provides an auxiliary power supply method and device for an important system of a small offshore reactor, to solve the problem that the existing emergency power supply and auxiliary power supply of a small offshore reactor both use diesel generator sets, which are prone to common mode faults, limited space Limitations and problems with high failure rates
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[0042] This patent utilizes the wave energy generating device to be used when the generator and the backup power supply cannot work normally. The specific implementation will be further described below in conjunction with the accompanying drawings and examples.
[0043] Such as figure 1 As shown, the embodiment of the present invention provides the operating environment of the auxiliary power supply method of the important system of the small offshore reactor. The power supply of the important system of the offshore small reactor includes a generator 11, an auxiliary power supply 12, an emergency power supply 13 and a wave energy power generation device 14. In normal conditions Next, the generator 11 generates and supplies electricity. When the generator 11 fails, because the small pile is at sea, it loses the support of the shore power grid, so figure 1 The shore power grid in the system can only be used when the small stack is on the shore. Generally, when the generator 11 f...
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The invention provides an auxiliary power supply method and device for an important system of a small offshore reactor. The method includes triggering the starting signal of the auxiliary power supply, the emergency power supply and the wave energy power generation device at the same time when the first busbar voltage loss signal is triggered; When the auxiliary power supply and the emergency power supply cannot be started in the preset first time period and the preset second time period respectively, trigger the load signal of the wave energy generating device, and the start time of the preset second time period ends from the preset first time period Start counting at time; close the first circuit breaker arranged between the wave energy generating device and the power electronic conversion device to form a power supply circuit between the wave energy generating device and the second bus; the wave energy generating device supplies the second bus through the power supply circuit The power regulated by the power electronic conversion device is delivered. Through the present invention, when the offshore small stack is powered off, the wave energy generating device is used to supply power, so as to solve the problems of common-mode failure of the existing backup power supply and large space occupied by the diesel generator.
Description
technical field [0001] The invention relates to the technical field of nuclear reactors, in particular to an auxiliary power supply method and device for an important system of a small offshore reactor. Background technique [0002] The offshore small reactor is a small nuclear power plant that can provide electricity to the island to meet the needs of the island's industry, lighting, heating, and seawater desalination. According to the design principle of nuclear power plant power system, when the normal power supply system fails, the power system of nuclear power plant requires multiple backup power sources to meet the requirements of nuclear safety. At present, the emergency power supply and auxiliary power supply of offshore small reactors are provided by diesel generator sets, the power supply structure is single, and there is a risk of failure of diesel generator sets due to common mode faults; when the main power supply of the unit fails, unlike land nuclear power pla...
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IPC IPC(8): H02J9/06H02J9/08H02J11/00
CPCH02J9/06H02J9/08H02J11/00
Inventor 王利罗定南潘传吉李剑波张伟周舟翁文庆杨杰伟李东奕
Owner CHINA NUCLEAR POWER TECH RES INST CO LTD